AUC 180 Manhole Fires

Question 1

10-25-1

Answer 1

Fire has extended from a manhole, conduit, or transformer into a building.
*Utility Co response

Question 2

10-25-4

Answer 2

Fire or smoke from a transformer at any location

*Utility Co response

Question 3

AUC 180

What effect do downed overhead primary and secondary wires have on underground gas piping?

Answer 3

They can damage them. All gas piping (plastic ,steel, cast iron and copper) can be damaged by burning, arching, or smoldering electric cables.

Question 4

AUC 180

What actions must be taken at manhole fires and emergencies?

Answer 4

Area must be taped off.
Inspect electrical services in nearby buildings
Members shall NOT attempt to move vehicles in danger area.
Precautionary hoselines stretched as necessary.

Question 5

T or F. Units should not operate hoselines into manholes unless requested by a Con Ed employee at scene.

Answer 5

True.

If requested to, do not direct stream directly into manhole, let water flow or pour into manhole. Use fog nozzle.

Question 6

AUC 180

If expected arrival time of Con Ed is more than 30 minutes, the officer in charge may order one of the following:

Answer 6

1) Unit remaining on scene may respond to alarms, one member left at scene
2) One member left at scene and unit shall return to quarters. Company officers shall provide relief for members.
3) When member is left at scene, company officer shall at frequent intervals contact dispatch for notification of utility company
4) Manhole shall be protected by tape, all units placed in service

Question 7

AUC 180

Whose responsibility is it to remove manhole covers at manhole fires?

Answer 7

Utility crews

Question 8

AUC 180

What must be taken into consideration when deciding the size and location of the “Area of Danger”?

Answer 8

Traffic Control Boxes. Smoke and gas can travel up hollow poles and be ignited by spark

Question 9

AUC 180

What is the size of a typical transformer vault?

Answer 9

12 x 4

Question 10

Transformers convert primary voltage ______ to secondary voltage______, both can be fatal if not handled properly.

Answer 10

27000volts, 120 volts

Question 11

Allransformers contain dielectric oil which acts as a coolant in amounts ranging from?

Answer 11

200 to 600 gallons

Question 12

AUC 180.

What is the greatest hazard in transformer vaults?

Answer 12

the amount of electricity

Question 13

AUC 180

Teams of how many member should examine exposures? What shuld they be equipped with?

Answer 13

PPC, SCBA, HT, CO meter

Question 14

AUC 180

Where should CO meter readings be taken in exposures?

Answer 14

Meter room, surrounding rooms, and on first floor.

Question 15

AUC 180

Note - Members shall not enter transformer vaults until Con Ed says it is safe to do so, if necessary

Answer 15

Note