According to the regulations, what type of...

Question 1 / 270705eccefa5bacbc34ba4d48799

Question 1 of 270705eccefa5bacbc34ba4d48799

According to the regulations, what type of gauging is required for a cargo of butadiene?

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Question 1 of 27070

Q

According to the regulations, what type of gauging is required for a cargo of butadiene?

🔍 Key Concepts

• 46 CFR Part 154 – Safety standards for self-propelled vessels carrying bulk liquefied gases • Properties of butadiene (flammable liquefied gas with polymerization tendencies) • Definitions and requirements for open, restricted, and closed gauging for dangerous cargos

💭 Think About

• Is butadiene considered a low-hazard or high-hazard liquefied gas, and how does that affect how vapors may be released? • Which gauging method minimizes vapor escape and personnel exposure for highly flammable gases under pressure? • How do the regulations treat tank vapors for this kind of cargo—are they allowed to freely vent during measurement?

✅ Before You Answer

• Confirm in 46 CFR 154 the table listing specific gauging requirements for each liquefied gas cargo, including butadiene • Check the regulatory definitions of open gauging, restricted gauging, and closed gauging and note which allow liquid/vapor release • Verify whether the rule requires the most vapor-tight system practicable for this class of flammable liquefied gas

Question 1 of 27070

Q

According to the regulations, what type of gauging is required for a cargo of butadiene?

A

Open

B

Restricted

C

Closed

D

None

Question 1 / 270705eccefa5bacbc34ba4d48799

Question 1 of 270705eccefa5bacbc34ba4d48799

According to the regulations, what type of gauging is required for a cargo of butadiene?

Back

Question 1 of 27070

Q

According to the regulations, what type of gauging is required for a cargo of butadiene?

🔍 Key Concepts

• 46 CFR Part 154 – Safety standards for self-propelled vessels carrying bulk liquefied gases • Properties of butadiene (flammable liquefied gas with polymerization tendencies) • Definitions and requirements for open, restricted, and closed gauging for dangerous cargos

💭 Think About

• Is butadiene considered a low-hazard or high-hazard liquefied gas, and how does that affect how vapors may be released? • Which gauging method minimizes vapor escape and personnel exposure for highly flammable gases under pressure? • How do the regulations treat tank vapors for this kind of cargo—are they allowed to freely vent during measurement?

✅ Before You Answer

• Confirm in 46 CFR 154 the table listing specific gauging requirements for each liquefied gas cargo, including butadiene • Check the regulatory definitions of open gauging, restricted gauging, and closed gauging and note which allow liquid/vapor release • Verify whether the rule requires the most vapor-tight system practicable for this class of flammable liquefied gas