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SD300 Deepwell Pump (Cat 95)

Cargo Pump (Deepwell) · Pumps

Technical data from manufacturer or class sources · not yet verified by a person​‌​​⁠​⁠⁠​‍​‍​​​‌⁠‌​‌
300 m³/hCapacity
Crude oil / productsMedium
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Framo SD300 Deepwell Pump (Cat 95) — hydraulisch angetriebene Tauch-Cargo/Ballast-Pumpe (SD-Serie). Submerged centrifugal cargo pump for liquid cargo transport (Cargo/Ballast/Stripping), IMO Annex II compliant with self-priming stripping system. Foerderstrom (Serie): SD125: 200 m³/h; SD200: 500 m³/h; SD100/SD150/SD250/SD300/SD350: nicht verifizierbar. Edelstahl, Cofferdam-Leckageueberwachung, mechanische Dichtung. Serien-verifiziert.

Specifications

Technical data.reference — unverified

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KonstruktionEinzelstufige Zentrifugalpumpe, vollständig aus Edelstahl gefertigt
AbdichtungMechanische Dichtung gegen Hydrauliköl + doppelte Lippendichtung gegen Cargo
AntriebsölHydraulikmotor wird durch Antriebsöl gekühlt und geschmiert
CofferdamBelüftetes Schutzgehäuse um gesamte Pumpe, zur Überwachung von Leckagen
Normale Leckagebis 10 ml/h (0,25 l/Tag) von Mechanischer Dichtung akzeptabel
Cargo-dichtungs-leckagebis 0,5 l/Tag normal
FörderverfahrenEingebautes effizientes Stripping-System für IMO Annex II Anforderungen
RegelungStufenlose Kapazitätsregelung mittels Speed Torque Control (STC) Ventil
FlüssigkeitsbereichDichte 1,000-1,520 kg/dm³, Viskosität 1-35 cSt
HinweisSerien-Level verifiziert (framo.com + Service Bulletins). Foerderstrom modell-abhaengig.
ApplicationSubmerged centrifugal cargo pump for liquid cargo transport (Cargo/Ballast/Stripping), IMO Annex II compliant with self-priming stripping system
Foerderstrom serieSD125: 200 m³/h; SD200: 500 m³/h; SD100/SD150/SD250/SD300/SD350: nicht verifizierbar
DriveHydraulisch (Hydraulikmotor A2FM Reihe, z.B. A2FM 200 für SD200-6)
Pump Typedeepwell
Flow (m³/h)300
SeriesSD
Head (m)150
Inspection

Inspector Detail

Common issues

  • Bottom (cargo-lubricated) bearing wear from dry-running or abrasive cargo residue
  • Hydraulic motor internal leakage reducing pump speed and output
  • Column pipe or shaft misalignment causing vibration and accelerated bearing wear
  • Deck seal/stuffing box leakage allowing cargo or hydraulic oil ingress
  • Underperforming stripping (self-priming) system leaving excessive cargo residue
  • Hydraulic oil contamination (water or cargo ingress) degrading the HPU
  • Impeller wear or erosion on abrasive or corrosive cargoes

Inspection checklist

  • Check hydraulic oil condition (moisture content, particle count) at the HPU
  • Inspect the deck seal/stuffing box for leakage
  • Verify bottom bearing clearance/condition when the pump is pulled at dry-docking
  • Check the pump column for straightness and vibration while running
  • Verify stripping system vacuum/eductor performance against baseline
  • Measure hydraulic motor case-drain leakage to check for internal wear
  • Check hydraulic circuit non-return and pressure relief valves
  • Confirm gas-freeing of the pump column per cargo history before any hot work

Service intervals

Bottom bearing inspection/renewaltypically at dry-docking or on a running-hour trigger from Framo - varies with cargo type, not a fixed universal figure
Hydraulic oil sampling/analysisevery 3-6 months in service
Hydraulic oil filter changeper differential pressure indicator, typically every few hundred running hours - confirm against the HPU manual
Deck seal inspectionannually or at dry-docking
Full pump pull and overhaulcondition-based, commonly every 2.5-5 years depending on cargo service

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Bottom bearing radial clearancetypically renewed once clearance reaches roughly 1.5-2x the as-new fitted clearance for this pump size - confirm against Framo's pump-specific limit
Hydraulic motor case-drain leakagean increase of more than about 20-30% over the motor's as-commissioned baseline typically indicates internal wear needing attention

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Bottom bearing (rubber or composite, cargo-lubricated)
  • Deck seal / stuffing box seal set
  • Hydraulic motor seal kit
  • O-ring and gasket set for column joints
  • Hydraulic oil filter elements
  • Impeller wear ring (if fitted)

Safety

  • Enclosed-space and gas-freeing hazards when entering the tank around a pulled pump column
  • Stored hydraulic pressure - isolate and depressurise the HPU before opening components
  • A seal failure can contaminate cargo with hydraulic oil or vice versa - check compatibility before running
  • Hot work restrictions near cargo pump columns due to residual vapour

Class survey

Cargo pumps on tankers fall under class's cargo system survey requirements: expect checks on IMO Annex II stripping performance where applicable, pump room gas detection, and hydraulic power pack safety devices (relief valves, low-level alarms).

Estimated lifetime: Framo deepwell pump columns commonly stay in service 15-20+ years with periodic bearing and seal renewal. The bottom bearing and seals are the practical wear-limiting items, not the column or casing, so actual life is cargo- and condition-dependent rather than a fixed hour figure.

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