Disposal of flammable substances with ignition sources

  • Safety Flash
  • Published on 16 January 2015
  • Generated on 29 July 2026
  • IMCA SF 01/15
  • 2 minute read

A Member has reported an environmental incident in which flammable substances were disposed of from a vessel in the same bags as potential ignition sources. 

Following a port call by the vessel, a large amount of waste was offloaded alongside. The waste disposal contractor were advised by the vessel crew that they were offloading a number of hazardous substances including, aerosols, hydrocarbons, oily rags, oil filters and paint thinners. The waste disposal contractor was informed that the vessel crew would separate the special waste, in particular separate the flammable paint thinners into a metal drum to avoid contact with the other materials which provided a potential ignition source.

However, once the waste was lifted off the vessel and transported back to the yard of the waste disposal contractor, it was clear that vessel crew had in fact placed all the waste into black bags and had not segregated the special waste. As the bags were not transparent, a chemist was obliged to open it (which they should not have had to do) in order to identify and separate the flammable paint thinners from the other ignition sources.

Findings

Our Member’s investigation noted the following:

  • The vessel crew had not followed their Garbage Management Plan and as a result placed a number of their colleagues and also waste disposal contractor personnel at significant risk of exposure to a fire by placing flammable paint thinners in the same bag as ignition sources such as oily rags and other hydrocarbons.

  • There was poor communication about the on-board waste procedure between the various departments.

  • The vessel also incurred an extra cost as a result of the disposal company having to segregate the hazardous waste.

Action

Our Member took action to ensure that:

  • All personnel are aware of the dangers of storing/disposing of flammable substances with ignition sources.

  • Clear plastic bags are used on board for all waste bins.

  • Bags containing hazardous substances for disposal are clearly labelled to indicate contents.

  • Flammable substances are not being stored/disposed with ignition sources; crew should be vigilant of this fact, especially when disposing and storing hazardous substances.

  • Vessel management delivered a presentation to the crew on ensuring proper waste segregation on-board.

Latest Safety Flashes:

MAIB: Catastrophic engine failure and subsequent fire

MAIB has published Accident Investigation Report 10/2026 into a catastrophic failure of a diesel generator engine on board the vessel Kommandor Susan.

Read more
BSEE: Compressed gas cylinder hazards

BSEE has published Safety Alert 516, relating to potential risks involving compressed gas cylinders.

Read more
MSF: dropped object inside vessel tank

MSF have published Safety Alert 26-05 relating to a tank cleaning machine coming lose and falling within a tank on a vessel.

Read more
Uncontrolled movement of cargo

During offshore cargo operations alongside a rig, a single pipe loaded on deck shifted due to vessel motion and swell conditions.

Read more
Positives – rubber seals on hatches, securing of shackle pins, fuel sample box

A Member reports a few positive findings.

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.