During repairs it is necessary to replace an existing vessel bulkhead. Drawings indicate it is a "B" class bulkhead. This indicates which of the following?

Question

Accepted Answer

"B" class bulkheads must not allow flame passage for 30 minutes when subjected to a fire test.

Answer

"B" class bulkheads must not allow flame or smoke passage for 15 minutes when subjected to a fire test.

Answer

"B" class bulkheads must not allow flame passage for 60 minutes when subjected to a fire test.

Answer

"B" class bulkheads must not allow flame passage for 120 minutes when subjected to a fire test.

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