Propane Certification Propane Storage and Handling 3

Question 1

What is the correct action when a technician discovers a propane cylinder with a damaged valve that cannot be closed?

Accepted Answer

Move the cylinder to a safe open outdoor area away from ignition sources and contact the supplier or emergency services

Answer

Attempt to repair the valve while the cylinder remains pressurized

Answer

Store the cylinder in a sealed room until the pressure naturally dissipates

Answer

Submerge the cylinder in water to cool it and slow the release

Question 2

What information is typically stamped on the collar or shoulder of a DOT propane cylinder?

Accepted Answer

Serial number, water capacity, tare weight, working pressure, and manufacture or requalification dates

Answer

Manufacturer's logo and color code only

Answer

Only the working pressure and maximum fill weight in pounds

Answer

The type of gas the cylinder is exclusively approved to carry

Question 3

Propane storage areas must be kept free of which of the following to reduce fire and explosion risk?

Accepted Answer

Combustible materials, flammable liquids, and sources of ignition

Answer

Metal shelving units and non-sparking hand tools

Answer

Pressure gauges, regulators, and service fittings

Answer

Ventilation openings and drainage pathways

Question 4

When a propane odor is detected in a cylinder storage area, which response is correct?

Accepted Answer

Evacuate all personnel, avoid operating any electrical devices, and call emergency services from a safe distance

Answer

Use electrical fans or switches to rapidly ventilate the area immediately

Answer

Open all cylinder valves slightly to equalize pressure and allow gradual dissipation

Answer

Cover cylinders with wet cloth or foam to absorb the escaping gas

Question 5

What is the purpose of the fixed liquid level gauge (bleeder valve) found on ASME propane storage containers?

Accepted Answer

To indicate when the container has reached the maximum safe fill level (typically 80% of water capacity) during filling

Answer

To release excess pressure automatically when the container temperature rises above a safe limit

Answer

To drain accumulated water condensation from the bottom of the container

Answer

To measure the real-time flow rate of propane exiting the container during operation

Question 6

How should a propane cylinder exchange program store empty cylinders awaiting refill?

Accepted Answer

In a secure outdoor cage or enclosure, clearly labeled as empty and separated from full cylinders

Answer

Inside the retail store in a climate-controlled room to prevent temperature extremes

Answer

In an underground pit covered with a metal grate to keep them cool

Answer

Mixed with full cylinders in the same cage to simplify customer access and inventory

Question 7

Under NFPA 58, what physical protection is required when propane storage containers are located near a public way such as a street or parking area?

Accepted Answer

Containers must be protected by physical barriers such as bollards, posts, or guardrails to prevent vehicle impact

Answer

Containers must be painted fluorescent orange to maximize visibility to drivers

Answer

Containers must be fully buried below grade with only the valve assembly above ground

Answer

Containers must be fitted with automatic shutoff valves triggered by nearby vehicle movement