Hazardous Materials Evacuation MP204.01 A

Question 1

The following guidelines present an approach which will be applicable in the majority of situations, but do not replace good______and____ in dealing with any particular incident.

Answer 1

Judgement, Experience

Question 2

Natural gas is much______ than air and will usually dissipate rapidly in the outside environment.

Answer 2

Lighter

Question 3

The flammable limitsof Natural Gas are approximately___ to__ in air.

Answer 3

Four to Fifteen Percent (4% -15%)

Question 4

Natural gas itself is nontoxic, however, it displaces______ and can result in asphyxiation if in a confined space

Answer 4

Oxygen

Question 5

Burning natural gas should not normally be_________, since this would change the situation from a visible to invisible hazard with explosive potential.

Answer 5

Extinguished

Question 6

Natural Gas Fires should be________ by stopping the flow.

Answer 6

Controlled

Question 7

When units arrive at the scene of a structural explosion, what should be considered a possible cause?

Answer 7

Natural Gas

Question 8

Until it can be determined that the area is safe from the danger of further explosions,______ all civilians and keep the number of Fire Department and/or other emergency personnel

Answer 8

Evacuate

Question 9

Use combustible gas_____ to check all suspected areas containing Natural Gas.

Answer 9

Indicators

Question 10

Check area_________ using combustible gas indicators

Answer 10

Systemactically

Question 11

The use of ground probes is essential to evaluate potential________ leaks.

Answer 11

Underground

Question 12

__ _____ personnel are responsible for locating and eliminating leaks in the gas system.

Answer 12

Gas Company

Question 13

If further collapse is possible, the___ should be called to provide shoring, cribbing or other means of stabilizing the structure.

Answer 13

TRT

Question 14

With gas company personnel on the scene of an incident, it shall be standard procedure for the first Fire Department unit to provide______ interaction between agencies

Answer 14

Effective

Question 15

__ _____personnel shall be responsible for locating and eliminating leak sources.

Answer 15

Gas Company

Question 16

Gas company personnel and/or the______ shall obtain a sufficient number of gas concentration readings, using their combustible gas indicators for Command to evaluate the hazard and take appropriate action.

Answer 16

HazMat Team

Question 17

If gas company personnel must excavate to shut off a leak, provide stand-by protection with a charged ___-inch line and two firefighters in full protective equipment and SCBA

Answer 17

1.5”

Question 18

All_______working in the vicinity of a known or suspected gas leak shall wear full protective clothing with SCBA’s.

Answer 18

Personnel

Question 19

Describe when a limited access zone should be established and maintained.
What should be used to identify the limited access zone, when necessary?

Answer 19

• around any suspected gas leak

- “fire line” tape

Question 20

What should be established for personnel control and accountability? Where necessary, a hazard sector should be established.

Answer 20

-a lobby sector