Confined space entry fatality

  • Safety Flash
  • Published on 10 July 2012
  • Generated on 7 May 2025
  • IMCA SF 07/12
  • 2 minute read

The Accident Investigation Board of Norway (AIBN) has published the following safety flash regarding a confined space entry fatality on board a vessel, in which a crew member died during cargo tank cleaning work. 

What happened?

The incident occurred when a crewman entered the cargo tank without breathing apparatus to retrieve a cargo sampling device. The crewman collapsed inside the tank. He was rescued, but, despite efforts to save his life, he was later declared dead.

The investigation undertaken by the AIBN noted the following points:

  • The crewman died as a result of oxygen deprivation. At the time of the accident, the oxygen content of the atmosphere at the bottom of the tank was probably less than 7.2%. The nitrogen content was probably over 90%.
  • The crewman was experienced and familiar with the risks involved in entering the tank, and probably thought he could ‘get away with it’ and be able to climb down the ladder, retrieve the equipment and climb back up again without an oxygen supply.
  • The cause of the fatality was probably not due to a lack of knowledge, but a lack of motivation in relation to complying with the procedures in the management system.
  • Non-compliance with company confined space entry procedures was found to be more widespread on the vessel than just the crewman who died.

The report can be downloaded from aibn.no/Sjofart/Rapporter/2012-07-eng

Latest Safety Flashes:

BSEE: Nitrogen Cylinder Rupture Causing Worker Injuries and Equipment Damage

The United States Bureau of Safety and Environmental Enforcement (BSEE) has published Safety Alert 494 relating to a Nitrogen Cylinder rupture which caused injuries and equipment damage.

Read more
Person fractured foot during elevator inspection
Read more
Detergent chemical burn

Leaked detergent resulted in slight chemical burns onboard a vessel.

Read more
Positive findings and good practices

A member highlights some examples of positive findings and good practices on board some of their vessels.

Read more
Hydrogen Sulphide (H2S) detected onboard vessel

Several persons reported to bridge about a smell of septic or rotten eggs that was present all over the vessel. Hydrogen Sulphide (H2S) was suspected.

Read more

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of the entire offshore industry.

The effectiveness of the IMCA Safety Flash system depends on the industry sharing information and so avoiding repeat incidents. Incidents are classified according to IOGP's Life Saving Rules.

All information is anonymised or sanitised, as appropriate, and warnings for graphic content included where possible.

IMCA makes every effort to ensure both the accuracy and reliability of the information shared, but is not be liable for any guidance and/or recommendation and/or statement herein contained.

The information contained in this document does not fulfil or replace any individual's or Member's legal, regulatory or other duties or obligations in respect of their operations. Individuals and Members remain solely responsible for the safe, lawful and proper conduct of their operations.

Share your safety incidents with IMCA online. Sign-up to receive Safety Flashes straight to your email.