Propane Certification Propane Storage and Handling

Question 1

What is the maximum fill level allowed for propane containers, expressed as a percentage of water capacity?

Accepted Answer

80%

Answer

Propane containers must never be filled beyond 80% of their water capacity to allow space for liquid expansion as temperature rises.

Question 2

How must DOT propane cylinders be positioned when in active use?

Accepted Answer

Upright with the valve end up

Answer

DOT cylinders must be used in the upright position with the valve end up to ensure only vapor, not liquid propane, exits the container during normal operation.

Question 3

What is the maximum temperature that propane containers should be exposed to during storage, per NFPA 58?

Accepted Answer

120°F

Answer

Per NFPA 58, propane containers must not be exposed to temperatures exceeding 120°F, as higher temperatures can dangerously increase pressure inside the container.

Question 4

Which type of valve protection is required on propane cylinders that are not connected to an appliance or manifold?

Accepted Answer

A protective cap or plug over the valve outlet

Answer

Valve outlets on cylinders not in service must be protected with a cap or plug to prevent contamination, damage, and accidental gas release.

Question 5

When storing propane cylinders indoors, what is the maximum aggregate LP-Gas content allowed in a standard storage room without requiring specially constructed facilities?

Accepted Answer

300 pounds

Answer

NFPA 58 permits up to 300 pounds of LP-Gas in a standard indoor storage area; quantities above this require a purpose-built storage room meeting additional construction requirements.

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Blog Practice Test

Propane Certification Propane Storage and Handling