Composite Boiler

high 52 models total

A composite boiler combines an oil-fired furnace and an exhaust gas heating surface inside one shell, so it can raise steam from the main engine's waste heat while under way and switch to oil firing in port or at low load, without running two separate boiler units.

Read more — Composite Boiler explained ▾

What sets a composite boiler apart

A pure exhaust gas economiser only makes steam when the main engine is running hard enough to produce useful exhaust heat, and a pure oil-fired boiler needs its own furnace and burner regardless of engine load. A composite boiler puts both heat sources inside a single pressure vessel: exhaust gas tubes pass through the same steam and water space as the oil-fired section, so the vessel automatically draws steam from whichever source is available, cutting fuel consumption at sea and giving full steam-raising capability in port.

Composite boiler arrangement — Schematic of a composite boiler sharing one steam drum between an oil-fired furnace and an exhaust gas tube bundle fed from the main engine, with feedwater in, steam out and the water circulation between drum and heating surfaces.

Main components

Oil-fired section

A furnace with a rotary or pressure-jet burner, refractory lining and its own combustion air fan, functioning as a conventional smoke tube or water tube boiler section.

Exhaust gas section

A bank of gas tubes or a gas-side casing routed from the main engine exhaust, arranged so soot blowing and gas-side cleaning can be carried out without shutting down the oil-fired side.

Common steam drum

Both heat sources feed the same steam and water space, so water level control and safety valves cover the composite unit as a single system rather than two.

Soot blowers and gas dampers

Fitted to the exhaust gas passages to control gas-side fouling, with dampers to isolate the exhaust gas section when the main engine is stopped or when its heat is not needed.

Selection and sizing

Steam demand at sea versus in port, since the split between the two heat sources drives the balance of exhaust gas heating surface against oil-fired capacity.
Main engine exhaust gas temperature and flow at normal service load, which sets how much of the steam demand the exhaust section can cover unaided.
Working pressure needed by cargo heating, fuel heating or accommodation services.
Space and weight in the funnel casing, since routing exhaust gas through the boiler adds backpressure that the main engine maker must approve.

Regulations and class

Class rules cover the pressure vessel design, safety valve capacity and periodic internal and hydraulic testing exactly as for any steam boiler, with the composite unit surveyed as one vessel. SOLAS Ch. II-2 requirements for boiler room fire protection and fuel oil supply arrangements apply to the oil-fired section. Exhaust gas backpressure introduced by the gas-side tube bank is subject to the main engine maker's approved limit and is checked at commissioning and after major gas-side cleaning.

Typical faults

Fault	Consequence
Soot and unburnt deposits building up on exhaust gas tubes	Falling exhaust steam output and rising engine backpressure
Uneven water circulation between the two heating sections	Local overheating and tube wastage where circulation is weakest
Burner left in poor combustion trim	Carbon build-up on the oil-fired section, reduced efficiency, smoke
Gas damper seized or not fully closing	Uncontrolled gas-side cooling, condensation and acid corrosion when the engine is stopped

What to look for in a supplier

Class-approved pressure vessel design documentation covering both heat sources as a single approved unit.
Confirmed compatibility of the exhaust gas backpressure with the specific main engine model fitted.
Soot blower and gas-side access design that allows cleaning without a full boiler shutdown.
Spares commonality between the oil-fired burner components and other boilers already on board, where possible.

Log exhaust gas outlet temperature from the boiler alongside engine load, not just boiler pressure, since a rising outlet temperature at constant load is usually the first sign of gas-side fouling long before steam output visibly drops.

4000h

Service Interval

25 yr

Typical Lifetime

Typical Manufacturers

Aalborg

Inspector Mode Show All 52 total

6 manufacturers · 52 models

Alfa Laval

Mission OS

5-15 t/h steam · Oil → Steam · vertical oil‑fired composite boiler

Medium

Oil → Steam

Type

Composite Oil Section

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Service: Part of Mission composite boiler system. Oil section used in port. Water treatment per Alfa Laval guidelines.

Spare Parts: Aalborg Industries (Alfa Laval): Keep burner nozzle set, photocell and gaskets onboard. Lead time: 3–8 weeks for tubes.

Strengths

Small footprint with vertical orientation fits confined engine‑room spaces.
Fast start‑up and high part‑load efficiency due to low water content design.
Optional dual‑fuel capability provides flexibility when oil supply is limited.
Alfa Laval membrane walls and pin‑tube bank give excellent heat transfer and rapid steam generation.
Classified by major societies (ABS, DNV GL) and USCG type approved, simplifying regulatory compliance.

Weaknesses

Maximum output of only 6 t/h limits suitability for vessels with high steam demand.
Primarily oil‑fired; dual‑fuel option adds cost and complexity.
Composite construction requires strict water treatment to prevent corrosion and scale.
Pin‑tube bank inspection and cleaning can be more labor‑intensive than fire‑tube designs.
Not intended for continuous full‑load operation on large tankers or bulk carriers.

Typical Vessels: Product tanker (small/medium)Offshore supply vesselPassenger ferryContainer feederNaval auxiliary ship

Certifications: ABSDNV GLUSCG Type Approval

Decision Guide: Choose the Mission OS when a vessel needs a compact, fast‑responding boiler for low to moderate steam loads and has limited engine‑room space; avoid it on ships that require high continuous steam output or prefer a pure dual‑fuel system without oil‑only baseline.

Use Cases: Typically installed as an auxiliary boiler on vessels that run their main boilers at sea but need reliable steam generation while in port, for hotel services, cargo heating, or BOG handling on product carriers. Its vertical design allows placement alongside other equipment in tight engine rooms of offshore supply ships and small tankers.

Manufacturer Datasheet

Datasheet

Mission OC

5-12 t/h steam · Oil + Exhaust Gas → Steam · Composite oil‑exhaust‑gas boiler

Medium

Oil + Exhaust Gas → Steam

Type

Composite Combined

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Service: Integrated composite design. EG section at sea, oil section in port or supplementary. Soot blow EG section regularly.

Spare Parts: Aalborg Industries (Alfa Laval): Keep burner nozzle set, photocell and gaskets onboard. Lead time: 3–8 weeks for tubes.

Strengths

Integrated dual‑fuel (oil + exhaust gas) capability provides fuel flexibility and BOG utilization.
High steam output (12.5–120 t/h) suitable for main propulsion boilers on tankers and large bulk carriers.
Compact D‑type water‑tube construction with membrane walls reduces overall plant footprint.
Minimal fire‑box refractory lowers weight and simplifies furnace maintenance.
Design pressure options (9 or 18 bar) match most merchant‑ship steam system requirements.

Weaknesses

Complex control strategy for simultaneous oil and exhaust‑gas operation increases commissioning effort.
Higher capital cost compared with single‑fuel water‑tube boilers.
Regular soot‑blowing of the EG section is required to maintain heat transfer efficiency.
Limited to 9–18 bar design pressure; not suitable for high‑pressure (≥20 bar) applications.
Tube bundle maintenance can be intensive due to corrosion or scale if water chemistry is poor.

Typical Vessels: Crude oil tankerProduct tankerBulk carrierContainer shipRo‑Ro vessel

Certifications: ABSDNV GLLloyd’s Register

Decision Guide: Choose the Mission OC when you need a versatile steam generator that can exploit exhaust‑gas heat at sea and switch to oil in port, require up to 120 t/h of steam at moderate pressure, and value compact D‑type construction. Avoid it if your vessel operates at pressures above 18 bar, you prefer a single‑fuel system for simplicity, or budget constraints preclude the higher upfront cost.

Use Cases: Typical deployments include crude oil tankers using boil‑off gas (BOG) to generate steam while underway and switching to oil when in port, product tankers that need auxiliary steam for cargo heating, and large bulk carriers that recover exhaust‑gas heat to reduce fuel consumption on long voyages. The boiler’s dual‑fuel capability also suits container ships seeking to lower emissions by maximizing exhaust‑gas utilization.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC Series

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 0.5t/7bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 0.5t/10bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 1t/7bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 1t/10bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 2t/7bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 2t/10bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 5t/7bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Mission OC 5t/10bar

Model Family

Mission OC

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I Series

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 0.5t/7bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 0.5t/10bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 1t/7bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 1t/10bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 2t/7bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Alfa Laval Aalborg Aalborg OC-I 2t/10bar

Model Family

Aalborg OC-I

Boiler Type

Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type)

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Technical Specifications

Dampfkapazität OL: 12.500–55.000 kg/h (mit BOG-Management)
Dampfkapazität D: 25–120 t/h (Tanker-Hauptkessel)
Designdrücke: 9 or 18 bar(g)
Konstruktion: Zweritrommel (Dampftrommel/Wassertrommel), Membranwände, Generatorröhrenbank
Rohrsystem: Gerade Pin-Tubes mit Schwenk-Pins, externe Fallrohre (Aalborg D)
Brenner-typ: Oelgefeuert (Standard), Dual-Fuel optional, KBSD/Aalborg-Brenner
Refraktär: Minimal im Feuerraum, Isolations- + Formrefraktär an Rohrplatte

Product Lines

Aalborg OL (12.5-55 t/h, 9/18 bar)
Aalborg D (25-120 t/h, 18 bar, Tanker-Design)
Aalborg OM (8-45 t/h, Mittelkapazität)
Mission OS (bis 6 t/h, Vertical Auxiliary)

Common Failures & Inspection Points

Area: Tube body leakage due to corrosion, pitting, deposits (scale/sludge) or wear
Check: Internal visual inspection of all steam/water tubes; perform pressure test if suspected; seal leaking tube with conical stop valve after steel wire brush cleaning of tube ends. Leaking tubes must be renewed.
Area: Water level regulation: failure of differential pressure transmitter or feedwater control valve leads to flooding/drying out
Check: Check DP transmitter unit (external reference/variable leg, 4–20 mA output); feedwater control valve functional test; sight glass for cracks, contamination; test alarm function in control unit
Area: Safety valve failure or incorrect opening/closing pressures — overpressure or inadequate emergency steam relief
Check: Test two safety valves under full-load steam: pressure build-up 7 min. max. +6% working pressure permissible (water tubes); pop-point of each valve max. ±3% from set pressure; class notation: perform opening + accumulation test under classifier supervision
Area: Furnace refractory damage (cracks, spalling) or soot/corrosion → heat leaks, furnace instability, drum overheating
Check: Inspect furnace walls and refractory lining visually (min. 2x/year); check for cracks, moisture, soot deposits. Check lower tube plate (insulation + form refractory). After 3–4 weeks operation: perform blow-down, inspect/clean boiler, remove sludge
Area: Loss of pressure integrity due to corrosion, cracks, rivets or welds → leakage, operating loss, safety risk
Check: Hydrostatic test: fill boiler with water 21–65 °C (water tubes max. 71 °C). Pressure: 1.5× MAWP (non-entry) or 1.25× MAWP (entry). Secure safety valves with clamps. Check all seal surfaces, rivets, welds for leaks. Class notation: every 2 years (up to 8 years), then annually
Area: Internal corrosion (water side), scale deposits or fire side soot/flocking → tube wear, heat loss, contamination
Check: Class survey: water side (steam drum, water drum, all tubes) check for corrosion/cracks/deposits; fire side (furnace, flue gas path) check for soot/flocking (min. 2x/year). Man holes (top/bottom) permit access. If necessary use ultrasonic/endoscope for deeper defects

Type-universal inspection points for Alfa Laval Aalborg oil-fired marine steam boiler (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-model specs not auto-populated.

Manufacturer Datasheet

Datasheet

Volcano (Bono)

Volcano VS Series unverified

Model Family

Boiler Type

composite_boiler

Common Failures & Inspection Points

Soot accumulation in the exhaust section raises backpressure and reduces waste-heat recovery
Burner or ignition faults prevent independent steam generation when firing is required
Water-side scale or corrosion reduces heat transfer and damages pressure parts
Tube or gasket leakage causes water loss, steam instability or visible leakage
Level, feedwater or combustion-control faults cause alarms, unstable steaming or protective shutdown

Service: Inspect both fired and exhaust-gas sections, burner, refractory, tubes, soot cleaning, water-level devices, feedwater system and safety valves. Review water chemistry and exhaust backpressure trends. Test burner and boiler protections using approved procedures. Exact limits and cleaning criteria require manufacturer and class documentation.

Spare Parts: Carry burner and ignition parts, soot-cleaning spares, tube-repair provisions where approved, feedwater and valve seals, level-control parts, gaskets and control relays.

Use Cases: Merchant ships requiring efficient waste-heat steam generation together with independent auxiliary firing capability.

Datasheet

Volcano VS 0.5t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner ignition or flame failure caused by fuel, atomization or combustion-air problems, resulting in failed fired operation or burner trips
Soot fouling on exhaust-gas heating surfaces caused by engine operation, resulting in increased backpressure and reduced heat recovery
Tube or pressure-part leakage caused by corrosion, overheating or thermal fatigue, resulting in water loss or steam leakage
Feedwater or level-control malfunction caused by pump, valve, sensor or control faults, resulting in unstable water level or protective shutdown
Safety or combustion-control device malfunction caused by fouling, calibration drift or electrical faults, resulting in alarms, trips or unsafe indications

Service: Inspect burner or exhaust-gas sections as applicable, feedwater equipment, water-level controls, gauge glasses, safety devices and accessible pressure parts. Maintain boiler-water treatment and investigate abnormal level, pressure or temperature behavior before returning the unit to unattended service. Clean fireside or gas-side heating surfaces when fouling is indicated and inspect for soot accumulation, corrosion and leakage. Function-test alarms, trips, flame safeguards and automatic controls after maintenance. Examine refractory, casing and insulation where fitted for damage or hot spots. Refer to manufacturer, class and statutory documentation for exact pressure settings, water chemistry limits, inspection intervals and acceptance criteria.

Spare Parts: Keep burner service parts where fitted, ignition and flame-detection components, gaskets, gauge-glass consumables, feedwater-control parts and selected sensors recommended by the manufacturer. Pressure-part repair materials and safety-valve components must follow approved vessel and class procedures. Confirm exact spares from the boiler and burner documentation.

Use Cases: Steam generation or heat recovery for fuel heating, tank heating, accommodation services, cargo duties and other shipboard consumers on merchant and offshore vessels.

Datasheet

Volcano VS 0.5t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner or heat-source faults reduce steam production and cause flame, temperature or pressure alarms
Feedwater-control or level-sensing faults cause unstable water level, low-level trips or abnormal feed-pump cycling
Soot, scale or internal deposits reduce heat transfer and cause poor steaming performance or abnormal temperatures
Tube, coil, gasket or valve leakage causes visible water, steam or fuel leakage and pressure loss
Control, fan, flame-monitoring or safety-device faults cause repeated trips or failure of the normal operating sequence

Service: Inspect pressure parts, burner or exhaust-heating section, water-level devices, feedwater system, safety valves and controls. Review water treatment, leakage, deposits and alarm history. Function-test protective devices under the approved procedure. Refer to the manufacturer documentation for the exact figure for pressure, temperature, burner and wear limits.

Spare Parts: Carry burner and ignition parts where applicable, filters, valve and pump seal kits, level-control parts, gaskets, control relays and manufacturer-approved pressure-part consumables.

Use Cases: Steam generation on merchant, tanker, passenger and offshore vessels.

Datasheet

Volcano VS 1t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner fouling, poor atomization or fuel-supply problems cause unstable flame, smoke or flame-failure trips
Scale, soot or deposits reduce heat transfer, noticed as poor steam production or elevated gas-side temperatures
Low-water control or level-sensing faults can cause nuisance trips or unsafe level indication
Leaking tubes, gaskets or valves cause water, steam or gas leakage and loss of pressure
Fan, damper or combustion-control faults produce poor firing, smoke or repeated burner shutdowns

Service: Inspect the water and gas sides as accessible, burner and refractory where fitted, feedwater controls, gauge glasses, valves, safety devices and evidence of leakage or overheating. Test flame supervision, low-water protection, alarms and shutdowns using approved procedures. Review water-treatment records and combustion condition; exact pressure settings, blowdown limits and inspection criteria must follow manufacturer, class and statutory documentation.

Spare Parts: Typical spares include burner nozzles or service parts where applicable, ignition and flame-detection components, gaskets, gauge-glass parts, level-control components, valve packing and critical control relays or solenoids.

Use Cases: Used on cargo ships, tankers, offshore vessels and other ships requiring steam for fuel heating, accommodation services, tank heating, cleaning or other thermal duties.

Datasheet

Volcano VS 1t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner ignition or flame failure caused by fuel, atomization or combustion-air problems, resulting in failed fired operation or burner trips
Soot fouling on exhaust-gas heating surfaces caused by engine operation, resulting in increased backpressure and reduced heat recovery
Tube or pressure-part leakage caused by corrosion, overheating or thermal fatigue, resulting in water loss or steam leakage
Feedwater or level-control malfunction caused by pump, valve, sensor or control faults, resulting in unstable water level or protective shutdown
Safety or combustion-control device malfunction caused by fouling, calibration drift or electrical faults, resulting in alarms, trips or unsafe indications

Use Cases: Steam generation or heat recovery for fuel heating, tank heating, accommodation services, cargo duties and other shipboard consumers on merchant and offshore vessels.

Datasheet

Volcano VS 2t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner fouling, poor atomization or fuel-supply problems cause unstable flame, smoke or flame-failure trips
Scale, soot or deposits reduce heat transfer, noticed as poor steam production or elevated gas-side temperatures
Low-water control or level-sensing faults can cause nuisance trips or unsafe level indication
Leaking tubes, gaskets or valves cause water, steam or gas leakage and loss of pressure
Fan, damper or combustion-control faults produce poor firing, smoke or repeated burner shutdowns

Use Cases: Used on cargo ships, tankers, offshore vessels and other ships requiring steam for fuel heating, accommodation services, tank heating, cleaning or other thermal duties.

Datasheet

Volcano VS 2t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner ignition or flame failure caused by fuel, atomization or combustion-air problems, resulting in failed fired operation or burner trips
Soot fouling on exhaust-gas heating surfaces caused by engine operation, resulting in increased backpressure and reduced heat recovery
Tube or pressure-part leakage caused by corrosion, overheating or thermal fatigue, resulting in water loss or steam leakage
Feedwater or level-control malfunction caused by pump, valve, sensor or control faults, resulting in unstable water level or protective shutdown
Safety or combustion-control device malfunction caused by fouling, calibration drift or electrical faults, resulting in alarms, trips or unsafe indications

Use Cases: Steam generation or heat recovery for fuel heating, tank heating, accommodation services, cargo duties and other shipboard consumers on merchant and offshore vessels.

Datasheet

Volcano VS 5t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner fouling, poor atomization or fuel-supply problems cause unstable flame, smoke or flame-failure trips
Scale, soot or deposits reduce heat transfer, noticed as poor steam production or elevated gas-side temperatures
Low-water control or level-sensing faults can cause nuisance trips or unsafe level indication
Leaking tubes, gaskets or valves cause water, steam or gas leakage and loss of pressure
Fan, damper or combustion-control faults produce poor firing, smoke or repeated burner shutdowns

Use Cases: Used on cargo ships, tankers, offshore vessels and other ships requiring steam for fuel heating, accommodation services, tank heating, cleaning or other thermal duties.

Datasheet

Volcano VS 5t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner ignition or flame failure caused by fuel, atomization or combustion-air problems, resulting in failed fired operation or burner trips
Soot fouling on exhaust-gas heating surfaces caused by engine operation, resulting in increased backpressure and reduced heat recovery
Tube or pressure-part leakage caused by corrosion, overheating or thermal fatigue, resulting in water loss or steam leakage
Feedwater or level-control malfunction caused by pump, valve, sensor or control faults, resulting in unstable water level or protective shutdown
Safety or combustion-control device malfunction caused by fouling, calibration drift or electrical faults, resulting in alarms, trips or unsafe indications

Use Cases: Steam generation or heat recovery for fuel heating, tank heating, accommodation services, cargo duties and other shipboard consumers on merchant and offshore vessels.

Datasheet

Volcano VC Series unverified

Model Family

Boiler Type

composite_boiler

Common Failures & Inspection Points

Soot accumulation in the exhaust section raises backpressure and reduces waste-heat recovery
Burner or ignition faults prevent independent steam generation when firing is required
Water-side scale or corrosion reduces heat transfer and damages pressure parts
Tube or gasket leakage causes water loss, steam instability or visible leakage
Level, feedwater or combustion-control faults cause alarms, unstable steaming or protective shutdown

Spare Parts: Carry burner and ignition parts, soot-cleaning spares, tube-repair provisions where approved, feedwater and valve seals, level-control parts, gaskets and control relays.

Use Cases: Merchant ships requiring efficient waste-heat steam generation together with independent auxiliary firing capability.

Datasheet

Volcano VC 0.5t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner ignition or flame failure caused by fuel, atomization or combustion-air problems, resulting in failed fired operation or burner trips
Soot fouling on exhaust-gas heating surfaces caused by engine operation, resulting in increased backpressure and reduced heat recovery
Tube or pressure-part leakage caused by corrosion, overheating or thermal fatigue, resulting in water loss or steam leakage
Feedwater or level-control malfunction caused by pump, valve, sensor or control faults, resulting in unstable water level or protective shutdown
Safety or combustion-control device malfunction caused by fouling, calibration drift or electrical faults, resulting in alarms, trips or unsafe indications

Use Cases: Steam generation or heat recovery for fuel heating, tank heating, accommodation services, cargo duties and other shipboard consumers on merchant and offshore vessels.

Datasheet

Volcano VC 1t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner fouling, poor atomization or fuel-supply problems cause unstable flame, smoke or flame-failure trips
Scale, soot or deposits reduce heat transfer, noticed as poor steam production or elevated gas-side temperatures
Low-water control or level-sensing faults can cause nuisance trips or unsafe level indication
Leaking tubes, gaskets or valves cause water, steam or gas leakage and loss of pressure
Fan, damper or combustion-control faults produce poor firing, smoke or repeated burner shutdowns

Use Cases: Used on cargo ships, tankers, offshore vessels and other ships requiring steam for fuel heating, accommodation services, tank heating, cleaning or other thermal duties.

Datasheet

Volcano VC 2t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Burner fouling, poor atomization or fuel-supply problems cause unstable flame, smoke or flame-failure trips
Scale, soot or deposits reduce heat transfer, noticed as poor steam production or elevated gas-side temperatures
Low-water control or level-sensing faults can cause nuisance trips or unsafe level indication
Leaking tubes, gaskets or valves cause water, steam or gas leakage and loss of pressure
Fan, damper or combustion-control faults produce poor firing, smoke or repeated burner shutdowns

Use Cases: Used on cargo ships, tankers, offshore vessels and other ships requiring steam for fuel heating, accommodation services, tank heating, cleaning or other thermal duties.

Datasheet

KEPCO

KEPCO KCB Series unverified

Model Family

KCB

Boiler Type

composite_boiler

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Service: Inspect pressure parts or heater coils, heat-source/burner and refractory where applicable, gas-side cleanliness, circulation/feed systems and water or thermal-fluid condition. Verify level, pressure, temperature, flow, safety valves and shutdown/interlock functions applicable to the design. Review treatment, blowdown, soot-cleaning and operating records and use manufacturer/class procedures for pressure tests.

Spare Parts: Carry approved gaskets, valve service parts, relevant pump seals/bearings, temperature/pressure/level sensors and heat-source-specific spares such as burner ignition/flame components or soot-cleaning parts. Pressure-part repair materials should only be used under approved manufacturer and class procedures.

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 0.5t/7bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 0.5t/10bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Soot, scale, or deposit buildup on heating surfaces reduces heat transfer and appears as higher exhaust or firing temperature, poor steam production, or increased fuel demand
Burner, ignition, atomization, or fuel-supply faults cause flame failure, unstable combustion, smoke, or repeated burner trips
Low feedwater flow, pump trouble, level-control failure, or faulty level indication causes abnormal drum level and protective alarms or shutdowns
Tube, gasket, valve, or pressure-part leakage from corrosion, overheating, fatigue, or poor water chemistry causes water or steam leakage and pressure loss
Sensor, flame-safeguard, combustion-control, or safety-interlock faults cause nuisance trips, failed start sequences, or unsafe operating indications

Service: Check water level indication, feed system, burner and flame safeguard where fitted, combustion condition, soot and fireside deposits, waterside treatment, safety valves, pressure controls, mountings, refractory, exhaust-side condition, and evidence of leakage. Exact pressure settings, water limits, and inspection criteria must come from approved manufacturer and class documentation.

Spare Parts: Typical spares include burner service parts, ignition components, fuel and water valve seals, gauge-glass or level-indication service items, gaskets, refractory repair materials, filters, and critical control sensors recommended for the installation.

Use Cases: Used on cargo ships, tankers, passenger ships, offshore vessels, fishing vessels, and other ships requiring steam or recovered exhaust heat for machinery, cargo, hotel, or process services.

Datasheet

KEPCO KCB 1t/7bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 1t/10bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 2t/7bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 2t/10bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 5t/7bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

KEPCO KCB 5t/10bar unverified

Model Family

KCB

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara

Mihara MC Series unverified

Model Family

Boiler Type

composite_boiler

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 0.5t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Soot, scale, or deposit buildup on heating surfaces reduces heat transfer and appears as higher exhaust or firing temperature, poor steam production, or increased fuel demand
Burner, ignition, atomization, or fuel-supply faults cause flame failure, unstable combustion, smoke, or repeated burner trips
Low feedwater flow, pump trouble, level-control failure, or faulty level indication causes abnormal drum level and protective alarms or shutdowns
Tube, gasket, valve, or pressure-part leakage from corrosion, overheating, fatigue, or poor water chemistry causes water or steam leakage and pressure loss
Sensor, flame-safeguard, combustion-control, or safety-interlock faults cause nuisance trips, failed start sequences, or unsafe operating indications

Datasheet

Mihara MC 0.5t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

0.5

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Soot, scale, or deposit buildup on heating surfaces reduces heat transfer and appears as higher exhaust or firing temperature, poor steam production, or increased fuel demand
Burner, ignition, atomization, or fuel-supply faults cause flame failure, unstable combustion, smoke, or repeated burner trips
Low feedwater flow, pump trouble, level-control failure, or faulty level indication causes abnormal drum level and protective alarms or shutdowns
Tube, gasket, valve, or pressure-part leakage from corrosion, overheating, fatigue, or poor water chemistry causes water or steam leakage and pressure loss
Sensor, flame-safeguard, combustion-control, or safety-interlock faults cause nuisance trips, failed start sequences, or unsafe operating indications

Datasheet

Mihara MC 1t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 1t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 2t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 2t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 5t/7bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Mihara MC 5t/10bar unverified

Model Family

Boiler Type

composite_boiler

Steam capacity th

Design Pressure (bar)

Fuel Type

HFO/MDO

Common Failures & Inspection Points

Heat-source or burner failure caused by fuel, ignition, exhaust-flow or control faults, noticed as failed start, trip or reduced heat production
Low or unstable water/fluid circulation caused by pump, level-control or valve faults, noticed as alarms, local overheating or loss of output
Heating-surface fouling caused by soot, scale or deposits, noticed as reduced efficiency, higher exhaust temperature or increased pressure drop
Tube, coil or pressure-part leakage caused by corrosion, erosion, scale or thermal stress, noticed as water/fluid loss, steam leakage or contamination of the gas side
Safety/control instrumentation failure caused by sensor, valve, actuator or interlock faults, noticed as unstable operation, nuisance trips or failed functional tests

Use Cases: Used on merchant, tanker, offshore and passenger vessels for steam or thermal heating, including fuel/cargo heating, domestic services and waste-heat recovery.

Datasheet

Aalborg

Mission OC Composite

3000 kg/h steam · Steam (FO + Exhaust gas) · dual-fuel composite marine boiler

Common Failures & Inspection Points

Burner or heat-source faults reduce heat output and cause flame, temperature or pressure alarms
Feedwater, circulation or level-control faults cause unstable operation and protective trips
Soot, scale or internal deposits reduce heat transfer and cause poor output or abnormal temperatures
Tube, coil, gasket or valve leakage causes visible water, steam, oil or fuel leakage and pressure loss
Control, fan, flame-monitoring or safety-device faults cause repeated trips or failure of the normal operating sequence

Service: Inspect the burner or exhaust-heating section, pressure parts or thermal-oil coils, level or circulation controls, pumps, safety devices and refractory where fitted. Review treatment chemistry, leakage, deposits and alarm history. Function-test protective devices under the approved procedure. Refer to the manufacturer documentation for the exact figure for pressure, temperature, burner and wear limits.

Spare Parts: Carry burner and ignition parts where applicable, filters, valve and pump seal kits, level or temperature control parts, gaskets, fuses and selected control relays.

Strengths

Compact footprint suitable for vessels with limited engine room space
Dual‑fuel capability allows operation on either oil or gas, enhancing fuel flexibility
Integrated EGE section with automated soot blower improves heat recovery and reduces emissions
Fast start‑up and high part‑load efficiency compared to single‑fuel boilers
Standard IMO D‑2 construction meets stringent marine safety requirements

Weaknesses

More complex control system than single‑fuel units, requiring specialised operator training
EGE soot‑blowing mechanism adds maintenance tasks and can be a source of soot fires if not managed correctly
Water level gauge glass is known to be fragile and may need frequent replacement
Safety valve lifting incidents reported under rapid load changes
Higher initial capital cost relative to basic oil‑only boilers

Typical Vessels: TankerContainer shipCruise linerOffshore supply vesselMultipurpose cargo vessel

Certifications: IMO D-2ABSDNV

Decision Guide: Choose if the vessel requires fuel flexibility (oil and gas), has limited engine‑room space, and can support the additional maintenance of a dual‑fuel system. Avoid if crew training on dual‑fuel boiler operation is insufficient, or if operational simplicity and minimal upkeep are higher priorities than fuel versatility.

Use Cases: Steam and thermal-heating service on merchant, tanker, passenger and offshore vessels.

Datasheet

XW-TG7

2000 kg/h steam · Steam (FO + Exhaust gas) · compact water‑tube boiler

Common Failures & Inspection Points

Burner or heat-source faults reduce heat output and cause flame, temperature or pressure alarms
Feedwater, circulation or level-control faults cause unstable operation and protective trips
Soot, scale or internal deposits reduce heat transfer and cause poor output or abnormal temperatures
Tube, coil, gasket or valve leakage causes visible water, steam, oil or fuel leakage and pressure loss
Control, fan, flame-monitoring or safety-device faults cause repeated trips or failure of the normal operating sequence

Spare Parts: Carry burner and ignition parts where applicable, filters, valve and pump seal kits, level or temperature control parts, gaskets, fuses and selected control relays.

Strengths

Rapid start‑up thanks to low water content
Small footprint – ideal for vessels with limited engine‑room space
High thermal efficiency from optimized heat‑transfer design
Modular construction simplifies installation and routine maintenance
Robust marine‑grade materials suitable for harsh sea environments

Weaknesses

Tube leakage at the tube plate is a known failure mode, requiring careful inspection and periodic retube
Feed‑water control valve can stick if water treatment and level control are not rigorously maintained
Soot accumulation on fire tubes demands regular cleaning to retain efficiency
Steam output is limited compared with larger fire‑tube or multi‑drum boilers
Composite design may be more sensitive to corrosion if water chemistry is not tightly controlled

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Certifications: DNVABS

Decision Guide: Choose if: you need a high‑pressure steam source in a confined engine‑room, can maintain strict water‑treatment and level‑control regimes, and value quick start‑up and compactness. Avoid if: the vessel requires very large steam capacities, prefers a low‑maintenance fire‑tube design, or cannot guarantee disciplined water‑quality management.

Use Cases: Steam and thermal-heating service on merchant, tanker, passenger and offshore vessels.

Datasheet

Kangrim

KCB Series

3-10 t/h steam · Oil + Exhaust Gas → Steam · Composite oil/exhaust‑gas boiler

Medium

Oil + Exhaust Gas → Steam

Type

Composite

Common Failures & Inspection Points

Burner or heat-source faults reduce heat output and cause flame, temperature or pressure alarms
Feedwater, circulation or level-control faults cause unstable operation and protective trips
Soot, scale or internal deposits reduce heat transfer and cause poor output or abnormal temperatures
Tube, coil, gasket or valve leakage causes visible water, steam, oil or fuel leakage and pressure loss
Control, fan, flame-monitoring or safety-device faults cause repeated trips or failure of the normal operating sequence

Spare Parts: Carry burner and ignition parts where applicable, filters, valve and pump seal kits, level or temperature control parts, gaskets, fuses and selected control relays.

Strengths

Dual‑fuel capability (oil + exhaust gas) improves fuel flexibility and reduces bunker consumption.
Higher thermal efficiency by recovering waste heat from engine exhaust gases.
Compact footprint compared with separate oil‑only and waste‑heat boilers, saving space on board.
Designed for easy integration with existing marine propulsion systems and steam distribution networks.

Weaknesses

Complex control system requires skilled operators and more rigorous maintenance routines.
Potential soot fire risk in the exhaust‑gas section if soot management protocols are not strictly followed.
Oil burner ignition failures can occur if fuel quality or pre‑heat systems are inadequate.
Corrosion of water‑side tubes and scale buildup demand regular chemical cleaning and inspection.

Typical Vessels: Crude oil tankerProduct tankerBulk carrierContainer ship (large, steam‑heated cargo holds)Offshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if: you need a single boiler that can simultaneously use oil and recover exhaust heat to lower fuel costs, space is limited, and the vessel operates on routes where dual‑fuel flexibility adds operational resilience. Avoid if: crew lack experience with composite boiler control systems, or the ship’s design cannot accommodate the required soot‑fire prevention equipment and regular water‑side cleaning.

Use Cases: Steam and thermal-heating service on merchant, tanker, passenger and offshore vessels.

Datasheet