Two sources of electrical power are used during shipyard employment operations; shore side and vessel generated. Maritime workers are at greater risk for electrical shock hazards than workers in other industries because they stand on metal decks and often work in a wet environment. Before work is performed on circuits, except those being tested or adjusted, the circuits must be deenergized and checked at the point where work will be performed to ensure that they are in fact deenergized (29 CFR 1915.181(b)). Deenergizing the circuit must be correctly completed by opening the circuit breaker, opening the switch, or removing the fuse (29 CFR 1915.181(c)). The circuit must then be locked out or tagged out in accordance with 29 CFR 1915.89.
The circuit breaker, switch, or fuse location must be tagged to indicate that work is occurring on the circuit. Such tags must not be removed, nor the circuit reenergized, until the work has been completed (29 CFR 1915.181(c)). When work is performed immediately adjacent to exposed energized parts, these parts must be covered (for example, insulated) or other equally safe means provided (29 CFR 1915.181(d)). In order to ensure the safety of workers, it is recommended that:
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