🔍 Key Concepts

• 46 CFR requirements for cargo pump room and bulkhead penetrations on tank vessels • Purpose of gastight glands where rotating shafts pass through bulkheads that separate gas-dangerous from gas-safe spaces • Difference between design/installation requirements vs. operational/ventilation procedures

💭 Think About

• Which option describes a design/installation feature of the bulkhead penetration itself, rather than an operating procedure or instrumentation? • For a shaft piercing a bulkhead on a tanker, what is the main safety concern: removing vapors from a space, monitoring pressure, moving cargo, or preventing vapors from leaking through? • Which choice focuses on ensuring the bulkhead remains gas-tight even with a rotating shaft passing through it?

✅ Before You Answer

• Identify which answer talks about a structural feature that directly makes the penetration gastight • Eliminate any choices that describe how cargo is moved rather than how the bulkhead is sealed • Eliminate any options that are about monitoring or ventilation only, not about providing an actual gastight seal at the shaft penetration