Chemical spill leads to costly deck replacement
- Safety Flash
- Published on 27 June 2017
- Generated on 22 December 2024
- IMCA SF 16/17
- 2 minute read
The USCG has published Marine Safety Alert 01-17 relating to hazards from chemical spills.
What happened?
USCG inspectors found several cracks and parted seams in the aluminium braces of the structure underneath a vessel’s cargo deck. They learned that there had been a caustic soda* spill on the deck.
While it was washed off the vessel with water, a diluted caustic soda and water mix seeped into and settled underneath the wood planking.
A chemical reaction then occurred, causing damage and the need for extensive repairs.
As can be seen in this case, in addition to potential health risks to personnel involved with routine handling and clean-up of spills, there is also the potential for adverse chemical reactions with vessel components, construction materials, and other items on-board. The full alert can be found on the USCG website.
*Caustic Soda (Sodium Hydroxide, NaOH) is highly reactive with aluminium, causing it to oxidise and corrode quickly. Additionally, when caustic soda is exposed to aluminium under some conditions it can also produce highly flammable hydrogen gas.
IMCA has published a pocket safety card entitled Hazardous substances safety guide.
Members may wish to refer to the following incidents:
- Aluminium fresh water tanks: Near collapse due to serious corrosion
- Cargo contamination causing LTIs during clean-up
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.