U.S. regulations require a responsible...

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Question 1 of 2066636ee728f7522a1c518ddd

U.S. regulations require a responsible person to be present at all times when the hatches of spaces containing Class 1 explosive materials are open. When is the responsible person released from the duty of attendance?

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🔍 Key Concepts

• 33 CFR requirements for handling Class 1 explosives cargo on vessels • Meaning of "attendance" at open hatches versus general watchstanding or cargo duties • What specific condition removes the hazard associated with open hatches and explosive cargo

💭 Think About

• Ask yourself: What is the risk that the regulation is trying to control while the hatches are open over explosives? • Which choice describes the exact moment when that specific risk no longer exists, not just when paperwork or other tasks are finished? • Consider whether substituting one person for another actually ends the requirement, or just continues it under a different person.

✅ Before You Answer

• Identify which option refers directly to the status of the hatches over the explosives rather than paperwork, departure, or watch relief • Verify which event actually ends the legal requirement for continuous attendance at the open hatch, instead of merely transferring responsibility • Be sure the choice you pick is tied to elimination of exposure of the explosives space (think open vs. closed)

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