Boiler
critical
64 models total
A marine boiler raises steam either by burning fuel oil directly in an oil-fired unit or by recovering exhaust gas heat from the main engine in an economiser, and most vessels carry both types working into a common steam system.
Read more — Boiler explained ▾
What Sets This Category Apart
Marine boilers split into two working principles that are often confused as one system. An oil-fired auxiliary boiler burns fuel directly to raise steam whenever the ship needs it, in port or at sea, independent of the main engine. An exhaust gas economiser instead recovers waste heat from the main engine's exhaust, producing steam for free while under way but nothing when the engine is stopped or running at low load. Most cargo ships run both into a shared steam drum or system, with the oil-fired unit picking up load in port and the economiser doing the bulk of the work at sea.
Main Components
Furnace and Burner (Oil-Fired Type)
The combustion chamber and its burner assembly, with automatic flame safeguard controls that shut fuel supply on flame failure, low water level or high pressure.
Gas-Side Heating Surface (Economiser Type)
Finned tube banks arranged in the exhaust uptake, sized to extract heat without an excessive back-pressure penalty on the main engine.
Steam Drum
Separates steam from water and provides the reserve volume that absorbs load swings without the water level swinging wildly.
Water Level Controls and Alarms
Independent high and low level alarms plus a low-low level shutdown, since a boiler run dry, even briefly, can warp or rupture tubes.
Safety Valves
Spring-loaded valves set to lift before design pressure is exceeded, tested and sealed at survey.
Selection and Sizing
- Steam capacity matched to the largest simultaneous demand: fuel heating, accommodation heating, tank cleaning or cargo heating on tankers
- Working pressure and superheat requirement, if any, of the connected consumers
- Economiser gas-side pressure drop kept within the main engine maker's allowable back-pressure limit
- Soot blowing arrangement for the economiser, since fouled fins lose effectiveness quickly on heavy fuel
Regulations and Class
Boilers are subject to periodic internal and external survey under class rules, with safety valve testing, water level alarm testing and, for older or higher-pressure units, thickness gauging of tubes and drums. SOLAS Ch. II-2 fire safety provisions apply to the boiler space itself, and MARPOL Annex VI governs the fuel burned in an oil-fired unit the same as it does the main engine.
Typical Faults
| Fault | Consequence |
|---|---|
| Economiser fins fouled with soot on heavy fuel operation | Falling steam output and rising exhaust back-pressure on the main engine |
| Burner flame safeguard bypassed or defeated | Unburned fuel accumulates and reignites as a furnace explosion |
| Water level gauge glass blocked or misread | Low water level missed, risking tube overheating and failure |
| Safety valve seized from infrequent lifting | Overpressure protection lost, a survey failure and genuine hazard |
What to Look for in a Supplier
- Design pressure and steam output backed by class-approved calculation, not a catalog estimate
- Economiser back-pressure figures cross-checked against the specific main engine model
- Soot blower and cleaning access designed into the unit, not added as an afterthought
Never trust a single water level indication - cross-check the gauge glass against the remote level alarm before every watch handover, because a boiler dried out by a stuck gauge glass fails suddenly and expensively.
14 manufacturers · 64 models
Alfa Laval
50
OL Series (Oil-Fired Auxiliary Boiler)
500-25,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Oil-Fired Water Tube Auxiliary Boiler
Size Range
- OL-1
- OL-2
- OL-3
- OL-5
- OL-10
- OL-15
Steam capacity kgh
- 500
- 25000
Pressure range (bar)
- 7
- 16
Drive Type
Oil-Fired (HFO/MDO/MGO)
Construction
Water tube, vertical, natural circulation
Technical Specifications
- Dampfkapazität OL
- 12.500–55.000 kg/h (mit BOG-Management)
- Dampfkapazität D
- 25–120 t/h (Tanker-Hauptkessel)
- Designdrücke
- 9 oder 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: Rohrkörper-Leckage durch Korrosion, Pitting, Ablagerungen (Kalkstein/Schlamm) oder VerschleißCheck: Innenseitige Sichtprüfung aller Dampf-/Wasser-Röhren; bei Verdacht Druck-Test durchführen; leckendes Rohr mit konischem Stopfventil nach Stahlbürsten-Reinigung der Rohrenden abdichten. Undichte Rohre müssen erneuert werden.
- Area: Wasserstandsregulation: Ausfalls des Differenzdruck-Transmitters oder Speisewasser-Regelventils führt zu Überflutung/TrockenlegungCheck: DP-Transmitter-Einheit prüfen (externe Referenz/Variable Schenkel, 4–20 mA-Ausgang); Speisewasser-Regelventil Funktionsprüfung; Schauglas auf Risse, Verschmutzung; Alarm-Funktion im Steuergerät testen
- Area: Sicherheitsventil-Versagen oder falsche Öffnungs-/Schließdrücke — Überdruck oder mangelnde Notfall-DampfablastungCheck: Zwei Sicherheitsventile unter Volllast-Dampf prüfen: Druckaufbau 7 Min. max. +6% Arbeitsdruck zulässig (Wasserrohre); Pop-Point jedes Ventils max. ±3% von Einstelldruck; Klassenvermerk: Öffnungs- + Akkumulations-Test unter Klassifizierer-Aufsicht durchführen
- Area: Feuerraum-Refraktärschäden (Risse, Abschilferungen) oder Soot/Korrosion → Wärmelecks, Furnace-Instabilität, Drumm-ÜberheizungCheck: Furnace-Wände und Refraktärbelag visuell inspizieren (mind. 2x/Jahr); auf Risse, Feuchte, Soot-Ablagerungen prüfen. Untere Rohrplatte (Isolations- + Formrefraktär) überprüfen. Nach 3–4 Wochen Betrieb: Blow-Down durchführen, Kessel inspizieren/reinigen, Schlamm entfernen
- Area: Druck-Integritätsverlust durch Korrosion, Risse, Niete oder Schweißnähte → Leckage, Betriebsverlust, SicherheitsrisikoCheck: Hydrostatic Test: Kessel mit Wasser 21–65 °C füllen (Wasserrohre max. 71 °C). Druck: 1,5× MAWP (nicht eintretbar) oder 1,25× MAWP (eintretbar). Sicherheitsventile mit Klammern sichern. Alle Dichtflächen, Niete, Schweißnähte auf Lecks prüfen. Klassenvermerk: alle 2 Jahre (bis 8J), dann jährlich.
- Area: Innen-Korrosion (Wasser-Seite), Kesselstein-Ablagerungen oder Feuer-Seite-Soot/Flockung → Rohrverschleiß, Wärmeverlust, KontaminationCheck: Class Survey: Wasser-Seite (Dampftrommel, Wassertrommel, alle Röhren) auf Korrosion/Risse/Ablagerungen prüfen; Feuer-Seite (Furnace, Fluegas-Bahn) auf Soot/Flockung kontrollieren (mind. 2x/Jahr). Mannlöcher (oben/unten) erlauben Zugang. ggf. Ultraschall/Endoskop für tiefere Defekte einsetzen.
Typ-universelle Inspektionspunkte fuer Alfa Laval Aalborg Ölgefeuerte Schiffsdampfkessel (Water Tube / D-Type) (Aalborg + Class/eCFR, 2026-06). Per-Modell-Specs nicht auto-gefuellt.
Service: Burner nozzle inspection weekly. Feedwater treatment daily (pH, chlorides, dissolved oxygen). Soot blowing after each firing on HFO. Water-side inspection at annual survey. Hydraulic test every 5 years per Class.
Spare Parts: Alfa Laval Aalborg (Denmark). Burner parts: 2-4 weeks. Tubes: 6-10 weeks. Keep onboard: spare nozzle tips, photo-eye, gaskets, refractory cement.
Mission Series (Composite Boiler)
200-5,000 kg/h steam
· Steam (Oil-Fired + Exhaust Gas Heat Recovery)
Type
Composite Boiler (Oil-Fired + Exhaust Gas Section)
Size Range
- Mission OC-250
- Mission OC-500
- Mission OC-1000
- Mission OC-2500
Steam capacity kgh
- 200
- 5000
Pressure range (bar)
- 5
- 10
Drive Type
Oil-Fired + Exhaust Gas Economiser
Construction
Fire tube + exhaust gas sections in one unit, vertical
Technical Specifications
- Dampfleistung (OC-TCi, Ölfeuerung)
- 1200-6500 kg/h
- Dampfleistung (OC-TCi, Abgasseite)
- 300-5000 kg/h
- Designdruck (OC-TCi)
- 9 bar(g) (131 psi)
- Heizbauart (TFO)
- Öl- oder Gasfeuerung, Thermofluide/Thermoöl/Warmwasser
- Brennersystem
- Druckzerstäuber (Monobloc), schwenkbar zur Wartung
- Temperaturkontrolle
- Elektronisch geregelt, ±1°C Genauigkeit zur Ölschutzqualität
Product Lines
- Aalborg TFO (Oil/Gas-Fired Thermal Fluid Heater)
- Aalborg OC-TCi (Composite Steam Boiler - Combined Oil & Exhaust Gas)
- Aalborg EX (Waste Heat Recovery Heater)
- Aalborg OL (Oil/Gas-Fired Steam Boiler)
Boiler Type
Alfa Laval Aalborg Combined Oil/Thermal-Oil Heater (Composite)
Common Failures & Inspection Points
- Area: Thermoölabbau (Oxidation, thermische Zersetzung)Check: Ölmuster entnehmen und Säurezahl (TAN), Viskosität, Farbe prüfen; Temperaturüberschreitungen im Datensatz prüfen; elektronische Regler auf Sollwertdrift kontrollieren (±1°C-Ziel überschritten = Ölabbaurisiko)
- Area: Spulenrohre/Coil-Fouling und Korrosion (Ablagerungen, Verschlackung)Check: Spulen durch abnehmbaren Deckel sichtprüfen auf Beschichtung, Flugasche, Korrosionsstellen; Druckdifferenzmessung Aus-/Einlass durchführen (erhöhter Druck = Verschmutzung); Rohrdurchmesser-Ultraschall-Wandstärkenmessung bei Verdacht
- Area: Feuerraum-Wärmeschutz & Refraktärbeschichtung (Risse, Abplatzungen, thermische Schäden)Check: Sichtprüfung Feuerraum-Innenwände auf Risse in Refraktärmauerwerk, besonders Front-/Brennerbereich; Quarls und Luftregister auf Verschlackung/Verzunderung prüfen; Risse mit dunklem Verschluss (nicht geschlossen beim Betrieb) müssen repariert werden
- Area: Brenner & Brennstoff-Zerstäubung (Zerstäuberqualität, Flammenform, Ruß-Ablagerung)Check: Brennerzustand visuell prüfen (montage-/ausschwenkbar); Flammenform beobachten (stabil, kein Rußauswurf); Düsenlöcher auf Verschmutzung prüfen; übermäßige Rußablagerungen gegenüber Brenner deuten auf Verstellungsbedarf hin
- Area: Druckprüfung & Klassifizierungsbesichtigung (Hydrostatic Test, Klassifizierungs-Compliance)Check: Hydropneumatische Druckprobe nach Wartung durchführen (keine Stress >90% Fließgrenze); Inspektionsverlauf & -zeugnis mit Klassifizierungsgesellschaft (DNV, ABS, LR) abstimmen; Akkumulationsprobe bei Neueinbau (Druckaufbau <10% Nominalwert bei 15-min-Dauerbetrieb)
- Area: Sicherheitsventile & Wasserstandsglas (Ventilhub-Einstellung, Dichtprüfung, Schauglas-Durchblasen)Check: Sicherheitsventile müssen bei max. 3% über Betriebsdruck öffnen, Anfall bei 5% unter Betriebsdruck; jährliche Inspektionen; Schauglas-Durchblasen durchführen zur Kontrolle korrekter Wasserstandsanzeige; mindestens 2 unabhängige Wasserstands-Messmittel erforderlich (SOLAS)
Typ-universelle Inspektionspunkte fuer Alfa Laval Aalborg Combined Oil/Thermal-Oil Heater (Composite) (Aalborg + Class/eCFR, 2026-06). Per-Modell-Specs nicht auto-gefuellt.
Service: Soot blowing daily when exhaust gas section active. Burner maintenance weekly. Feedwater treatment daily. Exhaust gas tube inspection at annual survey. Hydraulic test per Class requirements.
Spare Parts: Alfa Laval Aalborg network. Lead time: 2-4 weeks for burner parts, 6-10 weeks for tubes.
[08.08.2026] Datenblattlink entfernt (nicht erreichbar): https://www.alfalaval.com.co/globalassets/documents/industries/marine-and-transportation/marine/aalborg-oc-tci.pdf (OC-TCi); https://datasheets.globalspec.com/ds/305/AlfaLaval/2E4EF6D3-A70F-4F32-9F78-A8A61F0C00BB (Aalborg TFO Datasheet)
AQ Series (Exhaust Gas Economiser)
500-30,000 kW thermal recovery
· Exhaust Gas / Feedwater → Steam
Type
Exhaust Gas Economiser (Finned Tube)
Size Range
- AQ-2
- AQ-5
- AQ-7
- AQ-10
- AQ-14
- AQ-18
Power range (kW)
- 500
- 30000
Drive Type
Passive (exhaust gas waste heat)
Construction
Finned steel tubes, vertical installation in funnel
Technical Specifications
- Betriebsdruck (typisch)
- 5-30 bar(g), max. 65 bar(g)
- Design-Druck XS-TC7A
- 10 bar(g)
- Pinch Point
- 10-20°C (Minimum 5°C)
- Rohrbauart
- Rauchrohr (XS-Serie), Wasserrohr (AV-6N, XW), mit Rippen (gilled tubes)
- Zirkulation
- Natürlich (AV-6N Standard), Erzwungen (XW, Forced Circulation Optionen)
- Größe
- XS-TC7A: Kompakteste Rauchrohr-Economizer am Markt
- Materialien/fouling
- Helix-Rohre, vertikales Design mit hoher Gasgeschwindigkeit minimiert Verschlammung
Product Lines
- Aalborg XS-TC7A (Smoke-Tube Economizer)
- Aalborg AV-6N (Water-Tube Boiler, Natural Circulation)
- Aalborg XW / XW-TG (Water-Tube Economizer, Forced Circulation)
- Aalborg XS-2V / XS-7V (Smoke-Tube Economizers)
- Aalborg Micro (Compact Waste Heat Recovery)
- Aalborg H/HW (Waste Heat Recovery after Gas/Diesel Engines)
Boiler Type
Alfa Laval Aalborg Exhaust Gas Boiler / Economizer (Abgaskessel / Abgaswärmetauscher)
Common Failures & Inspection Points
- Area: Rohrverschlammung / Rußabbrand-Gefahr (Soot Fouling)Check: Sichtprüfung Gasseite auf Rußaufbau, Temperaturmessung Abgas: >10-20°C über Sollwert signalisiert Verschlammung; Wasser-Spülkit-Einsatz (50 l/min, 0.4-0.6 MPa Druck) durchführen; Soot-Blower täglich 3x betreiben (Vorsicht: Bei Uptake Fire NICHT mit Dampf abblasen wegen H₂-Brandgefahr)
- Area: Rohrleckage / Korrosion / Erosion (Tube Leakage)Check: Interne Inspektionsprüfung (Öffnen von Schaugläsern/Handschachteln): Rohre auf Verschleiß, Lochfraß (pitting), Dünnung prüfen; Externe Prüfung auf Rußablagerungen, Bläschen, Durchhängen; Hydraulische Druckprobe bei 1.25 × Betriebsdruck für max. 10 Min durchführen
- Area: Druckbehälter-Klassbesichtigung / Periodische InspektionCheck: Klasse-Surveyor: Alle Kessel >3.5 bar Arbeitsdruck und >4.65 m² Heizfläche inspizieren. Frequenz: DNV/LLOYDS alle 2 Jahre bis 8 Jahre alt, dann jährlich; 2 umfassende interne Inspektionen pro 5-Jahres-Periode, Abstand max. 36 Monate. Innenflächen (Trommeln, Headers) auf Verschlammung, Korrosion, Risse prüfen.
- Area: Sicherheitsventile / ÜberdruckschutzCheck: Sicherheitsventil-Prüfung: Öffnung bei ≤3% über Arbeitsdruck; Testdruck 15% über Arbeitsdruck für max. 10 Min. (Feedwasser nur zur Wasserstands-Sicherung); Druckaufbau während Test max. 10% über Design-Druck bei Vollast-Feuerung mit geschlossenen Absperrventilen.
- Area: Wasserspiegel-Schauglas / SchutzeinrichtungenCheck: Schauglas-Sichtprüfung auf höchsten, niedrigsten, normalen Wasserspiegel-Markierung; Schutzeinrichtungen ohne Sichtbehinderung prüfen; Wasserscheide-Kugel-Ventil (safety ball) auf Funktionalität testen; Ablassleitung auf Sicherheit prüfen.
- Area: Refractory / Feuerraum (nur bei befeuerten Kesseln); Rohrbündelreinigung (XS-TC7A Helix-Rohre)Check: Bei Aalborg OL/D u.ä. Brenner-Kessel: Feuerfestmaterial (Membrane Walls, Furnace Floor) auf Risse, Verformung, Ablösungen prüfen; Carbon-Ablagerungen entfernen. Für XS-TC7A: Helix-Rohrbündel mit Wasser-Spülkit (7-8 Std. auf ähnlichen Schiffen) reinigen, ggf. Reinigungschemikalien vor Ablauf ins Schlammtank zugeben.
Typ-universelle Inspektionspunkte fuer Alfa Laval Aalborg Exhaust Gas Boiler / Economizer (Abgaskessel / Abgaswärmetauscher) (Aalborg + Class/eCFR, 2026-06). Per-Modell-Specs nicht auto-gefuellt.
Service: Soot blowing MINIMUM daily when running on HFO. Exhaust gas temperature differential monitoring (rise = soot buildup = fire risk). Water-side treatment per boiler standards. Complete tube inspection at drydock. Tube thickness measurement with ultrasound.
Spare Parts: Alfa Laval Aalborg. Tube sections: 8-12 weeks. Soot blower elements: 2-4 weeks. Keep onboard: soot blower spare elements, tube plugs for emergency plugging.
Aalborg-OC-TCi-1.5
Model number
Aalborg-OC-TCi-1.5
Evaporation
1500 kg/h
Design pressure
10 bar
Weight (dry)
3500 kg
Application
oil-fired composite steam boiler
Heating surface
30 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-1.5-7bar
Model number
Aalborg-OC-TCi-1.5-7bar
Evaporation
1500 kg/h
Design pressure
7 bar
Weight (dry)
3500 kg
Application
oil-fired composite steam boiler
Heating surface
30 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-1.5-16bar
Model number
Aalborg-OC-TCi-1.5-16bar
Evaporation
1500 kg/h
Design pressure
16 bar
Weight (dry)
3500 kg
Application
oil-fired composite steam boiler
Heating surface
30 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-1.5-20bar
Model number
Aalborg-OC-TCi-1.5-20bar
Evaporation
1500 kg/h
Design pressure
20 bar
Weight (dry)
3500 kg
Application
oil-fired composite steam boiler
Heating surface
30 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-2.5
Model number
Aalborg-OC-TCi-2.5
Evaporation
2500 kg/h
Design pressure
10 bar
Weight (dry)
4800 kg
Application
oil-fired composite steam boiler
Heating surface
42 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-2.5-7bar
Model number
Aalborg-OC-TCi-2.5-7bar
Evaporation
2500 kg/h
Design pressure
7 bar
Weight (dry)
4800 kg
Application
oil-fired composite steam boiler
Heating surface
42 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-2.5-16bar
Model number
Aalborg-OC-TCi-2.5-16bar
Evaporation
2500 kg/h
Design pressure
16 bar
Weight (dry)
4800 kg
Application
oil-fired composite steam boiler
Heating surface
42 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-2.5-20bar
Model number
Aalborg-OC-TCi-2.5-20bar
Evaporation
2500 kg/h
Design pressure
20 bar
Weight (dry)
4800 kg
Application
oil-fired composite steam boiler
Heating surface
42 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-4.0
Model number
Aalborg-OC-TCi-4.0
Evaporation
4000 kg/h
Design pressure
10 bar
Weight (dry)
7000 kg
Application
oil-fired composite steam boiler
Heating surface
62 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-4.0-7bar
Model number
Aalborg-OC-TCi-4.0-7bar
Evaporation
4000 kg/h
Design pressure
7 bar
Weight (dry)
7000 kg
Application
oil-fired composite steam boiler
Heating surface
62 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-4.0-16bar
Model number
Aalborg-OC-TCi-4.0-16bar
Evaporation
4000 kg/h
Design pressure
16 bar
Weight (dry)
7000 kg
Application
oil-fired composite steam boiler
Heating surface
62 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-4.0-20bar
Model number
Aalborg-OC-TCi-4.0-20bar
Evaporation
4000 kg/h
Design pressure
20 bar
Weight (dry)
7000 kg
Application
oil-fired composite steam boiler
Heating surface
62 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-6.0
Model number
Aalborg-OC-TCi-6.0
Evaporation
6000 kg/h
Design pressure
10 bar
Weight (dry)
9200 kg
Application
oil-fired composite steam boiler
Heating surface
85 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-6.0-7bar
Model number
Aalborg-OC-TCi-6.0-7bar
Evaporation
6000 kg/h
Design pressure
7 bar
Weight (dry)
9200 kg
Application
oil-fired composite steam boiler
Heating surface
85 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-6.0-16bar
Model number
Aalborg-OC-TCi-6.0-16bar
Evaporation
6000 kg/h
Design pressure
16 bar
Weight (dry)
9200 kg
Application
oil-fired composite steam boiler
Heating surface
85 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-6.0-20bar
Model number
Aalborg-OC-TCi-6.0-20bar
Evaporation
6000 kg/h
Design pressure
20 bar
Weight (dry)
9200 kg
Application
oil-fired composite steam boiler
Heating surface
85 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-9.0
Model number
Aalborg-OC-TCi-9.0
Evaporation
9000 kg/h
Design pressure
10 bar
Weight (dry)
12500 kg
Application
oil-fired composite steam boiler
Heating surface
115 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-9.0-7bar
Model number
Aalborg-OC-TCi-9.0-7bar
Evaporation
9000 kg/h
Design pressure
7 bar
Weight (dry)
12500 kg
Application
oil-fired composite steam boiler
Heating surface
115 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-9.0-16bar
Model number
Aalborg-OC-TCi-9.0-16bar
Evaporation
9000 kg/h
Design pressure
16 bar
Weight (dry)
12500 kg
Application
oil-fired composite steam boiler
Heating surface
115 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-9.0-20bar
Model number
Aalborg-OC-TCi-9.0-20bar
Evaporation
9000 kg/h
Design pressure
20 bar
Weight (dry)
12500 kg
Application
oil-fired composite steam boiler
Heating surface
115 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-12
Model number
Aalborg-OC-TCi-12
Evaporation
12000 kg/h
Design pressure
10 bar
Weight (dry)
16000 kg
Application
oil-fired composite steam boiler
Heating surface
145 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-12-7bar
Model number
Aalborg-OC-TCi-12-7bar
Evaporation
12000 kg/h
Design pressure
7 bar
Weight (dry)
16000 kg
Application
oil-fired composite steam boiler
Heating surface
145 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-12-16bar
Model number
Aalborg-OC-TCi-12-16bar
Evaporation
12000 kg/h
Design pressure
16 bar
Weight (dry)
16000 kg
Application
oil-fired composite steam boiler
Heating surface
145 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-12-20bar
Model number
Aalborg-OC-TCi-12-20bar
Evaporation
12000 kg/h
Design pressure
20 bar
Weight (dry)
16000 kg
Application
oil-fired composite steam boiler
Heating surface
145 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-OC-TCi-20
Model number
Aalborg-OC-TCi-20
Evaporation
20000 kg/h
Design pressure
10 bar
Weight (dry)
25000 kg
Application
oil-fired composite steam boiler
Heating surface
220 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-OC-TCi-20-7bar
Model number
Aalborg-OC-TCi-20-7bar
Evaporation
20000 kg/h
Design pressure
7 bar
Weight (dry)
25000 kg
Application
oil-fired composite steam boiler
Heating surface
220 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
7 bar
Pressure grade
7bar
Aalborg-OC-TCi-20-16bar
Model number
Aalborg-OC-TCi-20-16bar
Evaporation
20000 kg/h
Design pressure
16 bar
Weight (dry)
25000 kg
Application
oil-fired composite steam boiler
Heating surface
220 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
16 bar
Pressure grade
16bar
Aalborg-OC-TCi-20-20bar
Model number
Aalborg-OC-TCi-20-20bar
Evaporation
20000 kg/h
Design pressure
20 bar
Weight (dry)
25000 kg
Application
oil-fired composite steam boiler
Heating surface
220 m2
Standards
EU PED 2014/68/EU, classification by IACS members
Design pressure (configured)
20 bar
Pressure grade
20bar
Aalborg-EH-100
Model number
Aalborg-EH-100
Evaporation
140 kg/h
Design pressure
10 bar
Weight (dry)
1200 kg
Application
electric heated boiler, 100 kW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-250
Model number
Aalborg-EH-250
Evaporation
350 kg/h
Design pressure
10 bar
Weight (dry)
1800 kg
Application
electric heated boiler, 250 kW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-500
Model number
Aalborg-EH-500
Evaporation
700 kg/h
Design pressure
10 bar
Weight (dry)
2400 kg
Application
electric heated boiler, 500 kW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-1000
Model number
Aalborg-EH-1000
Evaporation
1400 kg/h
Design pressure
10 bar
Weight (dry)
3200 kg
Application
electric heated boiler, 1 MW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-2000
Model number
Aalborg-EH-2000
Evaporation
2800 kg/h
Design pressure
10 bar
Weight (dry)
4800 kg
Application
electric heated boiler, 2 MW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-3000
Model number
Aalborg-EH-3000
Evaporation
4200 kg/h
Design pressure
10 bar
Weight (dry)
6500 kg
Application
electric heated boiler, 3 MW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-EH-5000
Model number
Aalborg-EH-5000
Evaporation
7000 kg/h
Design pressure
10 bar
Weight (dry)
9500 kg
Application
electric heated boiler, 5 MW
Standards
EU PED 2014/68/EU, classification by IACS members
[08.08.2026] Datenblattlink entfernt (fehler 404): https://www.alfalaval.com/products/heat-transfer/boilers/electric-boilers/aalborg-eh/
Aalborg-ESB-160
Model number
Aalborg-ESB-160
Evaporation
225 kg/h
Design pressure
10 bar
Weight (dry)
1400 kg
Application
electric steam boiler 160 kW
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-ESB-320
Model number
Aalborg-ESB-320
Evaporation
450 kg/h
Design pressure
10 bar
Weight (dry)
1900 kg
Application
electric steam boiler 320 kW
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-ESB-630
Model number
Aalborg-ESB-630
Evaporation
880 kg/h
Design pressure
10 bar
Weight (dry)
2800 kg
Application
electric steam boiler 630 kW
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-ESB-1250
Model number
Aalborg-ESB-1250
Evaporation
1750 kg/h
Design pressure
10 bar
Weight (dry)
4200 kg
Application
electric steam boiler 1.25 MW
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg-ESB-2500
Model number
Aalborg-ESB-2500
Evaporation
3500 kg/h
Design pressure
10 bar
Weight (dry)
6800 kg
Application
electric steam boiler 2.5 MW
Standards
EU PED 2014/68/EU, classification by IACS members
Aalborg AV
Exhaust gas flow:
170 kg/s (375 lb/sec)
Exhaust gas temperature:
Typically < 560°C (1040 F)
Pinch point:
Typically 15-20 °C (59-68 F)
Design pressure:
≤ 50 bar (725 psi)
Aalborg D
Flexible fuel configurationThe same Aalborg D design can be fired with oil or gas. The Aalborg KBSD burner is used for oil, while the Aalborg MPF is recommended for dual-fuel operation. Both are steam-atomizing burners.
Tube design optionsThe boiler’s combustion section can be delivered with either bare tubes or straight tubes with bent pins. Both provide a high coefficient of heat transfer and limit pressure loss. Optimized furnaceConstructed with membrane walls,
Aalborg MD
TypeSteam heaterApplicationHeating of seawater for tank cleaningCapacity180–380 m3/hMaterialsCu/Ni 70/30 alloy (or similar) for aggressive fluids in tubesOther parts in carbon steelDesign conditionsPressure: 16 bar(g)Temperature: 204°CInstallationHorizont
EquipmentThermometersDrain/vent valveControl valvePressure gaugeSteam trapAdditional sensor wellsApprovalsCan be delivered with certificates from all major classification societiesDeliveryWithin 8–12 weeks from order and approved drawingWarrantyOperating warranty: 12 monthsMaximum warranty: 18 months from time of delivery
Aalborg MP
Specially designed bafflesA unique baffle arrangement gives the Aalborg MP-C a high heat transfer coefficient. This helps keep the heating surface clean and prevents tube vibration.
Staggered tube patternThe tubes in the Aalborg MP-C are staggered, which ensures excellent macroscopic mixing of the fluid. Stainless steel constructionThe Aalborg MP-C is ma
Aalborg MX
TypeHeat exchanger with U-tubesApplicationHeating/cooling of oil, water or other fluids by means of steam or thermal oilCapacity10–5000 kWMaterialsCarbon steel (other materials on request)Design conditions (pressure/temperature):12 bar(g)/300°C16 bar(g)/1
EquipmentThree half-inch sockets on shell for mounting of safety valve, drain valve, temperature sensor or pressure gaugeAccessories (optional) shell side:Safety valveDrain/air valvePressure gaugeThermometerOutlet tube for mounting of the control valve temperature sensor (hydrostatic or electric) and additional sensorsApprovalsABSBVCCSDNVKRLRSNKKRINARMRSDeliveryWithin 6 weeks from receipt of order for standard typesWarrantyOperating warranty: 12 monthsMaximum warranty: 18 months from time of delivery
Aalborg MC
TypeHeat exchanger with U-tubesApplicationSteam dumping, condensate cooling or cooling of oil or other fluids by means of fresh water, thermal oil or seawaterCapacitySteam dumping: 400–5000 kg/hMaterialsCu/Ni 90/10 alloy (or similar) for aggressive fluids
EquipmentThree half-inch sockets on shell for mounting of safety valve, drain valve, air vent valve, temperature sensor or pressure sensor (more sockets possible if needed)Accessories (optional) shell side:Safety valveDrain/air valvePressure gaugeThermometerApprovalsABSBVCCSDNVKRLRSNKKRINARMRSDeliveryWithin 6 weeks from receipt of order for standard typesWarrantyOperating warranty: 12 monthsMaximum warranty: 18 months from time of delivery
Aalborg ESB
Design:
Cylindrical, horizontal
Normal working pressure:
8–10 bar(g)
Max. allowable working pressure:
12 bar(g)
Feed water temp:
80ºC
Control:
Relay-based
Capacities:
600 kW (1 heating element)1200 kW (2 heating elements)1800 kW (3 heating elements)
Kangrim Heavy Industries (South Korea)
2
KEV Series (Oil-Fired Auxiliary Boiler)
500-20,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Oil-Fired Water Tube Auxiliary Boiler
Size Range
- KEV-500
- KEV-1000
- KEV-3000
- KEV-5000
- KEV-10000
Steam capacity kgh
- 500
- 20000
Pressure range (bar)
- 7
- 16
Drive Type
Oil-Fired (HFO/MDO/MGO)
Construction
Water tube, vertical, natural circulation
Common Failures & Inspection Points
- Burner flame eye contamination
- Water tube corrosion from feedwater quality issues
- Refractory deterioration
- FD fan bearing failure
Service: Same as Aalborg OL — burner weekly, feedwater daily, soot blowing after HFO firing. Annual survey inspection. Hydraulic test per Class.
Spare Parts: Kangrim (Changwon, Korea). Lead time: 3-6 weeks. Burner parts: 2-3 weeks. Service in Korean/Asian ports, limited in Europe.
KEG Series (Exhaust Gas Economiser)
500-25,000 kW thermal recovery
· Exhaust Gas / Feedwater → Steam
Type
Exhaust Gas Economiser (Finned Tube)
Size Range
- KEG-500
- KEG-1000
- KEG-3000
- KEG-5000
Power range (kW)
- 500
- 25000
Drive Type
Passive
Construction
Finned steel tubes, soot-blow capable
Common Failures & Inspection Points
- Soot fires — same critical risk as Aalborg AQ
- Tube erosion from exhaust gas velocity
- Acid dew point corrosion at slow steaming
- Soot blower mechanism failure
Service: Daily soot blowing on HFO. Temperature differential monitoring. Complete tube inspection at drydock. Same protocol as Aalborg AQ.
Spare Parts: Kangrim Korea. Lead time: 4-8 weeks for tube sections, 2-4 weeks for soot blower elements.
Babcock Wanson (France/UK)
1
Marine Fire Tube Boiler
300-5,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Fire Tube (Smoke Tube) Boiler, Horizontal 3-Pass
Size Range
- BW-300
- BW-500
- BW-1000
- BW-2000
- BW-5000
Steam capacity kgh
- 300
- 5000
Pressure range (bar)
- 7
- 13
Drive Type
Oil-Fired
Construction
Horizontal 3-pass fire tube, wetback design
Common Failures & Inspection Points
- Tube cracking from thermal fatigue
- Refractory combustion chamber deterioration
- Crown plate corrosion from water level excursions
- Burner register misalignment
Service: Standard fire tube boiler maintenance. Water treatment daily. Tube inspection annually. Complete overhaul at drydock.
Spare Parts: Babcock Wanson (Paris, France). Lead time: 4-8 weeks for tubes. Service network: France, UK, Mediterranean.
Clayton Industries (USA)
1
Marine Steam Generator
100-2,000 kg/h steam
· Steam (Oil/Gas fired)
Type
Once-Through Coil-Type Steam Generator
Size Range
- E-10
- E-24
- E-40
- E-60
- E-80
Steam capacity kgh
- 100
- 2000
Pressure range (bar)
- 7
- 15
Drive Type
Oil-Fired / Gas-Fired
Construction
Helical coil, once-through, forced circulation
Common Failures & Inspection Points
- Coil tube scale from feedwater impurities — CRITICAL
- Feedwater pump failure (single point of failure)
- Burner control malfunction
- Steam separator carryover
Service: Feedwater quality CRITICAL — softened/deionized water only. Chemical treatment daily. Coil inspection annually. Very compact but demanding on water quality.
Spare Parts: Clayton Industries (City of Industry, CA, USA). Lead time: 4-8 weeks. Limited marine network outside USA.
Cochran (UK)
1
Marine Fire Tube Boiler
200-5,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Fire Tube (Smoke Tube) Boiler, Vertical or Horizontal
Size Range
- Wee Chieftain
- Chieftain
- ST24
- ST28
- ST34
Steam capacity kgh
- 200
- 5000
Pressure range (bar)
- 7
- 10
Drive Type
Oil-Fired
Construction
Fire tube (smoke tube), cylindrical shell, wetback/dryback
Common Failures & Inspection Points
- Fire tube cracking from thermal stress
- Tube sheet distortion from uneven heating
- Crown plate corrosion from low water level incidents
- Burner register misalignment causing flame impingement
Service: Water level check hourly. Blow-down daily. Fire tube inspection at annual survey. Refractory inspection annually. Complete overhaul at drydock.
Spare Parts: Cochran (Annan, Scotland). Lead time: 4-8 weeks for tubes. Refractory: 2-4 weeks.
Hurst Boiler (USA)
1
Marine Fire Tube Series
100-2,000 kg/h steam
· Steam (Oil/Gas fired)
Type
Fire Tube Boiler (Scotch Marine Type)
Size Range
- S200
- S400
- S600
- S1000
- S2000
Steam capacity kgh
- 100
- 2000
Pressure range (bar)
- 7
- 15
Drive Type
Oil-Fired / Gas-Fired
Construction
Scotch marine fire tube, wetback, horizontal
Common Failures & Inspection Points
- Tube sheet cracking from thermal cycling
- Refractory deterioration
- Flame impingement from burner misalignment
Service: Standard fire tube boiler maintenance. US Coast Guard inspection requirements. Water treatment critical.
Spare Parts: Hurst Boiler (Coolidge, GA, USA). Lead time: 4-8 weeks. Primarily US market.
Miura (Japan)
1
Marine Once-Through Boiler
100-3,000 kg/h steam
· Steam (Fuel Oil / Gas fired)
Type
Once-Through Water Tube Boiler (Forced Circulation)
Size Range
- MI-500
- MI-1000
- MI-2000
- MI-3000
Steam capacity kgh
- 100
- 3000
Pressure range (bar)
- 7
- 10
Drive Type
Oil-Fired / Dual Fuel
Construction
Helical coil water tube, forced circulation, compact
Common Failures & Inspection Points
- Coil tube scale buildup from feedwater impurities — critical failure mode
- Feedwater pump failure (single-point-of-failure)
- Burner control unit malfunction
- Economiser section fouling
Service: Feedwater quality EXTREMELY critical (deionized water recommended). Chemical treatment daily. Coil inspection annually. Feedwater pump redundancy check. Complete overhaul every 5 years.
Spare Parts: Miura (Matsuyama, Japan). Lead time: 3-5 weeks Asia. Limited outside Asia. Keep onboard: feedwater pump spare, burner nozzle set.
Parat Halvorsen (Norway)
1
Marine Steam / Thermal Oil Boiler
200-5,000 kg/h steam or 200-5,000 kW thermal
· Steam or Thermal Oil
Type
Fire Tube Boiler / Thermal Oil Heater / Electric Boiler
Size Range
- IH-200
- IH-500
- IH-1000
- IH-3000
- IH-5000
Power range (kW)
- 200
- 5000
Drive Type
Oil-Fired / Electric
Construction
Fire tube, vertical/horizontal, also electric boiler models
Common Failures & Inspection Points
- Electric element burnout from scale (electric boiler)
- Tube corrosion from feedwater issues (fire tube)
- Thermal oil degradation (thermal oil heater)
Service: Per boiler type. Electric boilers: element inspection annually, water treatment critical. Fire tube: standard maintenance. Thermal oil: oil analysis quarterly.
Spare Parts: Parat Halvorsen (Flekkefjord, Norway). Lead time: 3-6 weeks. Electric heating elements: 2-3 weeks.
Saacke (Germany)
1
SKVG / FMB Series (Marine Burner + Boiler)
200-15,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Marine Burner System / Package Boiler
Size Range
- SKVG 1
- SKVG 2
- SKVG 3
- FMB 16
- FMB 25
- FMB 40
Steam capacity kgh
- 200
- 15000
Pressure range (bar)
- 7
- 16
Drive Type
Oil-Fired (HFO/MDO/MGO)
Construction
Rotary cup / pressure atomization burner, matched to boiler
Common Failures & Inspection Points
- Rotary cup wear from HFO abrasion — replacement every 3,000-5,000 hrs
- Flame eye (UV sensor) contamination causing flame failure
- Fuel atomization issues from viscosity / temperature mismatch
- Ignition electrode erosion
Service: Rotary cup inspection/replacement every 3,000-5,000 hrs. UV sensor cleaning weekly. Ignition electrode gap check monthly. Fuel temperature/viscosity control critical for clean combustion.
Spare Parts: Saacke (Bremen, Germany). Excellent European service. Lead time: 1-3 weeks for burner parts. Rotary cups: keep 2 spares onboard.
Shanghai Boiler Works (China)
1
SZL/DZL Marine Boiler Series
500-15,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Water Tube / Fire Tube Auxiliary Boiler
Size Range
- SZL-500
- SZL-1000
- SZL-3000
- DZL-5000
- DZL-10000
Steam capacity kgh
- 500
- 15000
Pressure range (bar)
- 7
- 16
Drive Type
Oil-Fired
Construction
Water tube or fire tube, vertical or horizontal
Common Failures & Inspection Points
- Welding quality inconsistency on older production runs
- Tube corrosion from feedwater treatment issues
- Burner control system reliability varies
- Refractory cracking
Service: Standard boiler maintenance. Chinese Classification Society (CCS) inspections. Feedwater treatment critical. Quality has improved since 2015.
Spare Parts: Shanghai Boiler Works. Very competitive pricing. Lead time: 2-4 weeks China, 6-10 weeks international.
Sunflame (Japan)
1
Marine Burner Systems
Steam capacity per Hersteller-Datenblatt
· Fuel Oil (HFO/MDO/MGO)
Type
Pressure Jet / Steam Atomization Marine Burner
Size Range
- SF-A3
- SF-A5
- SF-B10
- SF-B20
Drive Type
Oil-Fired
Construction
Pressure jet or steam atomization, flame eye, ignition system
Common Failures & Inspection Points
- Atomization nozzle wear from HFO abrasion
- Flame eye (UV detector) contamination
- Ignition transformer failure
- Air register linkage binding
Service: Nozzle inspection weekly. UV sensor cleaning weekly. Ignition electrode gap check monthly. Air/fuel ratio adjustment seasonally or after fuel changeover.
Spare Parts: Sunflame (Osaka, Japan). Lead time: 2-4 weeks Asia. Keep onboard: spare nozzle set, UV sensor, ignition electrode.
Unilux (Netherlands)
1
Marine Composite Boiler
200-2,000 kg/h steam
· Steam (Oil-Fired + Exhaust Gas)
Type
Composite Boiler (Oil-Fired + Exhaust Gas Section)
Size Range
- UMC 200
- UMC 500
- UMC 1000
- UMC 2000
Steam capacity kgh
- 200
- 2000
Pressure range (bar)
- 5
- 10
Drive Type
Oil-Fired + Exhaust Gas
Construction
Fire tube + exhaust gas section, vertical, compact
Common Failures & Inspection Points
- Exhaust gas section soot fires
- Fire tube corrosion from acid condensation at low loads
- Burner flame failure
- Safety valve sticking
Service: Soot blowing daily. Feedwater treatment daily. Standard composite boiler maintenance. Annual survey inspection.
Spare Parts: Unilux (Kampen, Netherlands). Lead time: 3-6 weeks. Service in Netherlands and Northern Europe.
Volcano (Japan)
1
Marine Fire Tube / Water Tube Boiler
200-10,000 kg/h steam
· Steam (Fuel Oil fired)
Type
Fire Tube / Water Tube Auxiliary Boiler
Size Range
- VB-200
- VB-500
- VB-1000
- VB-3000
- VB-5000
- VB-10000
Steam capacity kgh
- 200
- 10000
Pressure range (bar)
- 7
- 16
Drive Type
Oil-Fired (HFO/MDO/MGO)
Construction
Fire tube and water tube variants, vertical
Common Failures & Inspection Points
- Tube corrosion from feedwater treatment issues
- Burner nozzle fouling
- Refractory deterioration
- Safety valve issues
Service: Standard boiler maintenance. Feedwater treatment daily. Tube inspection at annual survey. Same protocol as other oil-fired marine boilers.
Spare Parts: Volcano (Nagasaki, Japan). Lead time: 3-6 weeks Asia. Limited outside Asia.
Wärtsilä
1
Marine Thermal Oil Heater
200-5,000 kW thermal
· Thermal Oil (no steam)
Type
Thermal Oil Heater (Oil-Fired)
Size Range
- TOH-200
- TOH-500
- TOH-1000
- TOH-2000
- TOH-5000
Power range (kW)
- 200
- 5000
Drive Type
Oil-Fired
Construction
Coil tube heat exchanger, thermal oil circuit
Common Failures & Inspection Points
- Thermal oil degradation from overheating — oil analysis critical
- Coil tube coking from local overheating
- Expansion tank level issues from oil degradation products
- Burner flame failure from nozzle fouling
Service: Thermal oil analysis every 3 months (viscosity, acid number, flash point). Burner maintenance weekly. Coil inspection at drydock. Oil replacement every 3-5 years depending on analysis.
Spare Parts: Sunrod/Wärtsilä Marine. Lead time: 3-6 weeks. Thermal oil: available worldwide (Mobiltherm, Shell Thermia).