Propane Certification Propane Certification Emergency Procedures 2

Question 1

Which type of fire extinguisher is recommended for most propane-related fires?

Accepted Answer

Dry chemical (BC or ABC rated)

Answer

Dry chemical extinguishers rated BC or ABC are recommended for propane fires because they interrupt the chemical chain reaction of combustion effectively.

Question 2

After a propane leak has been stopped and the area ventilated, what must be done before re-lighting any appliances?

Accepted Answer

A leak test must be performed on the entire system

Answer

After any leak event, a complete leak test using approved methods must confirm the system is leak-free before appliances are returned to service.

Question 3

What chemical is added to propane to give it a distinctive odor for leak detection?

Accepted Answer

Ethyl mercaptan (ethanethiol)

Answer

Ethyl mercaptan (ethanethiol) is the most common odorant added to propane, producing the characteristic rotten egg or skunk-like smell.

Question 4

A customer reports that they smell propane but the odorant seems fainter than usual. This could indicate:

Accepted Answer

Odor fade due to oxidation or absorption in new containers or piping

Answer

Odor fade occurs when ethyl mercaptan is absorbed by rust in new tanks or oxidized in the presence of air and moisture, reducing detectable odor levels.

Question 5

When is it acceptable to use an open flame to check for a propane leak?

Accepted Answer

Never — always use an approved leak detection solution or electronic detector

Answer

Open flame leak detection is never acceptable because it can ignite the propane being tested, causing serious injury or death.

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Propane Certification Propane Certification Emergency Procedures 2