A mains extension cable melted during use. This occurred during cutting on deck on a vessel in dry dock; sub-contractors did not fully pay out an extension cable reel they were using to power their equipment. As a result there was induction heating and a melting of cable cord.
Additionally, it was noted that the extension cable was damaged and fixed by tape in places.
What went wrong
The sub-contractor personnel were unaware of the dangers of induction coil heating on mains extensions not fully unwound. The extension cable and reel had not been inspected by a qualified person before use, and given the fact that it had a taped repair, should never have been used at all.
- Thorough inspection of mains electrical cabling before use;
- Fully pay out coiled mains extension cables before use;
- Consider the use of specialist 110v electrical equipment.
Please review IMCA “Are you prepared to work safely” video #14 on Electrical hazards.
Members may also wish to review:
IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of all. The effectiveness of the IMCA Safety Flash system depends on Members sharing information and so avoiding repeat incidents. Please consider adding [email protected] to your internal distribution list for safety alerts or manually submitting information on incidents you consider may be relevant. All information is anonymised or sanitised, as appropriate.
IMCA’s store terms and conditions (https://www.imca-int.com/legal-notices/terms/) apply to all downloads from IMCA’s website, including this document.
IMCA makes every effort to ensure the accuracy and reliability of the data contained in the documents it publishes, but IMCA shall 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.