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

Water extinguisher

Answer

CO2 extinguisher only

Answer

Foam extinguisher

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

The supplier must be notified and approve restart

Answer

The relief valve must be manually reset

Answer

The container must be replaced with a new one

Question 3

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

Accepted Answer

Ethyl mercaptan (ethanethiol)

Answer

Sulfur dioxide

Answer

Hydrogen sulfide

Answer

Chlorine gas

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

The propane supplier changed the odorant formula

Answer

The customer's sense of smell is impaired only

Answer

The container pressure is too low

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

Only outdoors with good wind

Answer

Only on low-pressure systems below 0.5 psi

Answer

Only when the leak is very small

Question 6

What is the lower explosive limit (LEL) of propane in air, below which ignition cannot occur?

Accepted Answer

2.1%

Answer

4.0%

Answer

1.0%

Answer

5.5%