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Electrical installation onboard ships

A contractor member has reported that they have experienced a number of potentially serious incidents involving electric shocks to personnel working on what was thought to be isolated electrical machinery onboard their vessels.

At least one of these incidents was caused by failure to isolate supply properly (two separate supplies from two different switchboards to the same machinery). It appears that in this case there may have been unrecorded modification to the electrical system some 10 years ago.

The member has elected to check their vessel electrical systems and to ensure that all drawings of these systems are up to date and in accordance with appropriate rules/safe practice.

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.

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