Investigation Report
Failure of cargo pump and subsequent explosion on tanker Esso Mersey with loss of 2 lives
Failure of cargo pump and subsequent explosion on tanker Esso Mersey with loss of 2 lives
- MAIB
- Investigation Report
- Unknown
- ExplosionHydrocarbon ReleaseMachinery and Equipment
- CorrosionExplosionHydrocarbon releaseMechanical failure
- Fluid transferInspection and maintenance
- PumpsRotating machinery
- Contractor managementOperating and work procedures
- Marine industry
- Vessel
Summary
This reopened inquiry reassesses the fatal Esso Mersey tanker explosion, examining cargo-pump refurbishment, assembly procedures, material selection and corroded locking screws. It finds inadequate quality control by both Esso and its contractor. The origin of damaging vibration remains uncertain, although intermediate-bush failure is considered probable.
Classifications: Corrosion; corrosion damage.
Classifications: Explosion; explosive atmospheres.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Pumps.
Classifications: Rotating machinery; rotating equipment.
Classifications: Contractor management; contractor assurance.
Classifications: Operating and work procedures.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
The report examines cargo pump failure followed by an explosion aboard a tanker.
Themes: explosion, hydrocarbon release, machinery and equipment.