T.B. 8 - Electrical Hazards: Apparatus & Aerial Considerations

Question 1

LAFD Policy: Aerial ladders must be kept at least ____ ft. away from ALL power lines and devices.

Answer 1

10 ft.

Question 2

The use of Aerial Ladders is governed by:

• CAL/OSHA Title ___
• NFPA ___E.

Answer 2

Title 29

70E

Question 3

CAL/OSHA and NFPA require that AERIAL LADDERS be operated at a minimum clearance of 10 ft. away from power lines and electrical devices of ____ volts or more?

Answer 3

600 volts

Question 4

LAFD Policy: Aerial ladders SHALL NOT be placed in ______ proximity to power lines and electrical devices.

Answer 4

close

Question 5

Dept members SHALL NOT work in violation of the 10 ft. rule unless participating in an actual _______ attempt. In those instances the A/O shall remain at the _________ to provide for personnel safety and ensure safe operation of the Aerial.

Answer 5

Rescue

Pedestal

Question 6

Aerial Ladder placement must allow for ladder _____ and _____.

As well as the ____ around electrical wires.

Answer 6

sway, rock

sag

Question 7

Whenever the aerial ladder is raised, it is good practice for all members to stand clear of __________ wires and avoid unnecessary contact withe apparatus and outriggers.

Answer 7

overhead

Question 8

Aerial Considerations: All wires should be considered ________ even though they are not electrical.

Answer 8

charged

Question 9

Overhead Communication Cable (normally found on the lowest level of a pole) can be energized up to ____ volts.

This may not be enough to cause serious injury but could result in a ____ from a raised Aerial.

Answer 9

50 v

fall

Question 10

Any metal part of an Aerial Ladder that touches high voltage lines will energize the entire apparatus. It is essential to NEVER provide a _______ for an electrical contact.

Answer 10

ground

Question 11

Energized Apparatus Procedures:

• “Emergency Traffic” to notify all personnel of hazard.
• Request DWP for immediate dispatch.
• Do not attempt to _____ or move high voltage lines.
• If the apparatus touches a high voltage line, the operator should back the equipment away or ______ the Aerial to break contact with the line.

Answer 11

• raise

- lower

Question 12

Guidelines for raising ladders at incidents with electrical hazards:

• ALL members should identify the presence of overhead wires, transformers, etc.
• Keep ground ladders at least ____ ft. away from wires.
• Watch tops of ladders being raised for potential hazards.
• Be aware of any conditions that may cause ladders to _____ or _____ and contact an electrical source.
• Be cautious of ____ tools used on ladders.

Answer 12

• 10 ft.
• Slip or Slide
• hand

Question 13

Spot the apparatus a __________ distance from the downed wires or damaged power pole.

Answer 13

sufficient

Question 14

Spot apparatus and have responding personnel maintain at least ____ span from the affected wire or pole.

If the pole is damaged do not count the damaged pole. The distance between ____ undamaged poles will provide the best margin of safety.

Answer 14

1

2