Hazmat Bul 5-5b Gas Emergencies

Question 1

What is the expansion ratio for propane gas?

Answer 1

270 to 1

Question 2

Does propane have a natural odor?

Answer 2

It does not ethyl mercaptan is added to help identify it

Question 3

Is propane flammable or explosive?

Answer 3

Yes and concentrations between 2.1%(LEL) and 9.6% (UEL)

Question 4

How much heavier than air is propane?

Answer 4

1 1/2 times heavier than air

Question 5

Where should responding units Park for a gas leak?

Answer 5

A minimum of 200 feet prior to the reported address, uphill / upwind

Question 6

What is a BLEVE?

Answer 6

Boiling liquid expanding Vapor explosion

Question 7

Is natural gas heavier than air?

Answer 7

No and it will diffuse rapidly when it escapes in an open area

Question 8

Are Bottled gas, propane, gasoline and other types of fuel are lighter than air?

Answer 8

No and they collect on low places

Question 9

What’s the ignition point of natural gas?

Answer 9

1100° to 1200°

Question 10

4 situations of gas emergencies

Answer 10

1.gas escaping outside
2 gas burning outside
3 gas escaping inside
4 gas burning inside

Question 11

According to the hazardous atmosphere section what is the excess of percentage caused by the flammable gas, vapor or mist of its lower flammable limits?

Answer 11

10%

Question 12

At what percent of the LEL will a building be evacuated for an inside gas leak?

Answer 12

Any readings above 10% of the LEL

Question 13

Who is dispatched on an inside gas leak

Answer 13

2 engines and a truck

Question 14

What type of gas collects in low places?

Answer 14

bottled gas, propane, gasoline and other types of fuel are heavier than air and will collect in low places

Question 15

2nd due engine flammable gas leak should park where ?

Answer 15

2nd blocks in line of approach