Gas Emergencies

Question 0

What do most gas meters supply PSI to customers ?

Answer 0

1/4 psi

Question 1

What is natural gas explosive range?

Answer 1

5% to 15%

Question 2

Gas shut off are a ______ turn _________.

Answer 2

1/4 turn. Clockwise

Question 3

What are the priority order when shutting down gas valves ?

Answer 3

1. At the appliance. 2. Meter than meter valve than master meter.
2. Head of service valve. 4. Exterior gas riser valve
3. Curb valve. 6. Street valve

Question 4

When opening a curb valve in the street and you see a white valve what does this indicate?

Answer 4

Plastic valve that is easily broken

Question 5

When closing a curb valve how many turns are the most u should do?

Answer 5

15 turns

Question 6

Can FD shut down a street valve at a gas emergency?

Answer 6

Yes in extreme circumstances and only under the direction of FD IC after consultation with utility rep supervisor.

Question 7

Can plastic pipe be used inside a structure for gas line?

Answer 7

No

Question 8

Should FD members attempt to fold or go near plastic gas pipe ?

Answer 8

No

Question 9

At a gas leak are thermal imaging cameras instringentlly safe?

Answer 9

No

Question 10

If a gas supply is burning and not shut off what is the best thing to do?

Answer 10

Allow gas to burn off and wet down combustible material around it

Question 11

At a gas emergency how could you vent it?

Answer 11

Use a fog nozzle out a window

Question 12

Could we use FD fans to vent a gas emergency?

Answer 12

No not instrincally safe

Question 13

What is FD indoor action level at a gas leak ?

Answer 13

10%

Question 14

At a outdoor gas emergency what is FD action level?

Answer 14

20%

Question 15

When your going to vent at a gas emergency where would you start?

Answer 15

At top and work your way down and out of bldg

Question 16

If a bldg has positive gas readings how many exposures on both sides should be checked?

Answer 16

3 exposures on both sides

Question 17

You respond to a order of gas in the street and here a loud roaring sound what is this an indication of?

Answer 17

Outdoor gas leak also high pressure leak

Question 18

At a gas leak can sewer covers be removed?

Answer 18

Yes if approved by a chief on scene

Question 19

Can electrical manhole covers be removed by FD members?

Answer 19

Yes but must have the approval of the chief on scene and must be requested by a gas rep on scene . Prior to the removal of the cover a gas rep must check cover for stray voltage.

Question 20

Can we pull open square or rectangular manhole covers?

Answer 20

No

Question 21

Can we pull electrical manhole covers if there is a manhole fire in the area or smoke or arcing is observed in a electric manhole or transformer vault?

Answer 21

No do not open

Question 22

The Altair gas meter will sound an alarm at________.

Answer 22

10% LEL our indoor action level