According to U.S. regulations, normally,...

Question 1 / 270705eccef9cbacbc34ba4d45bc1

Question 1 of 270705eccef9cbacbc34ba4d45bc1

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?

Question 1 of 27070

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?

🔍 Key Concepts

• Liquefied flammable gas (LFG) tank design requirements in 46 CFR Part 38 • Purpose and location of manholes (access openings) on cargo tanks • Difference between a tank’s expansion trunk and the weather deck

💭 Think About

• Think about where it is safest to access an LFG cargo tank while still keeping vapors away from enclosed spaces and crew working areas. • Consider how LFG behaves if it leaks: is it heavier or lighter than air, and how does that influence where openings should be located? • Ask yourself which option best matches the idea of keeping cargo containment and access openings as far as practical from accommodation and machinery spaces.

✅ Before You Answer

• Check 46 CFR Part 38 for specific wording about location of manholes on LFG tank vessels. • Verify whether regulations prefer openings within a protected structure that is part of the tank system, versus simply saying "above the weather deck" in general. • Confirm whether the regulation mentions expansion trunks or tank ends specifically for manhole placement.

Question 1 of 27070

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?

There are no requirements in the regulation

In the expansion trunk of each tank

Above the weather deck

In the ends of each tank

Question 1 / 270705eccef9cbacbc34ba4d45bc1

Question 1 of 270705eccef9cbacbc34ba4d45bc1

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?

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Question 1 of 27070

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?