U.S. regulations require cargo pump rooms,...

Question 1 of 2707066636ee728f7522a1c5173e9

U.S. regulations require cargo pump rooms, on tank vessels handling grades A, B, or C liquid cargo, shall be equipped with power ventilation of the exhaust type. in what amount of time should the ventilation effect a complete change of air?

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Question 1 of 27070

🔍 Key Concepts

• 46 CFR requirements for tank vessels carrying flammable and combustible liquids • Purpose of power ventilation of the exhaust type in cargo pump rooms • Typical regulatory time limits for air changes in hazardous spaces

💭 Think About

• Is the cargo pump room considered a space with high risk of vapor accumulation and explosion? How quickly would vapors need to be removed to keep it safe? • Compare the answer choices: which times seem unrealistically short for a full air change in a large space, and which seem too slow for an emergency‑risk area? • Think about similar requirements for hazardous enclosed spaces on tank vessels—what order of magnitude (around 1 minute, a few minutes, or several minutes) is commonly used in regulations?

✅ Before You Answer

• Verify in 46 CFR the specific section on cargo pump room ventilation for tank vessels with Grades A, B, or C cargoes • Check whether the regulation says "not more than" a certain number of minutes for one complete air change • Confirm that the required time is consistent with other hazardous‑area ventilation standards on tank vessels (not excessively short or overly long)