Engine_2014 : Engineering Safety - 1955/2355
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| Where grades A, B, C, and D liquid cargoes are involved, power-driven or manually-operated spark producing devices shall not be used in the cargo pump room unless __________. |
| A) the compartment itself is gas free |
| B) the vessel is gas free |
| C) all cargo tanks are empty |
| D) all cargo tanks have been inerted |
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