204.09 Trench Rescue Operations

Question 1

True of False:
It shall be the policy of the Phoenix Fire Department that any equippted personnel shall be allowed into an unsafe trench or excavation if done so safely.

Answer 1

False
It shall be the policy of the Phoenix Fire Department that NO personnel shall be allowed into an unsafe trench or excavation.

Question 2

OSHA Regulations ________________ regulates excavations for general industry
and the rescue service and shall be considered the basis for emergency trench rescue operations.

Answer 2

Standard 29 CFR 1926 Subpart P

Question 3

For the purpose of emergency response, an excavation shall be defined by any depression, hole, trench, or earth wall, man made or natural, of _______feet or greater..

Answer 3

four feet or greater.

Question 4

Trench collapses generally occur due to?

Answer 4

unstable soil conditions combined with improper or inadequate shoring.

Question 5

The primary hazard to personnel in a trench rescue operation is?

Answer 5

the potential for additional collapse

Question 6

The phased approach for trench rescue

operations includes;

Answer 6

Arrival, Pre-entry operations, Entry operations, and Termination,

Question 7

First arriving company officer at a trench rescue shall?

Answer 7

assume Command and begin an immediate
size-up of the situation while ensuring that apparatus remains at least 50 feet from the
location of the trench failure.

Question 8

Command shall announce that Level 1 staging should take place?

Answer 8

at least 150 feet from the trench failure

Question 9

What should the first arriving TRT unit that is staffed with a TRT Company Officer should be assigned?

Answer 9

Rescue Sector

Question 10

Rescue Sector responsibilities include:

Answer 10

• Assuming technical rescue operations control.
• Identifying hazards and critical factors.
• Developing a rescue plan and back-up plan.
• Communicating with and directing TRT resources assigned to Rescue Sector.
• Informing Command of conditions, actions, and needs during all phases of the
rescue operation.

Question 11

a proper Size-Up for a trench rescue includes:

Answer 11

A. Secure a witness or responsible party to assist in gathering information to determine
exactly what happened. If no witnesses are present, Command may have to look for
clues on the scene to determine what happened.
B. Assess the immediate and potential hazards to the rescuers.
C. Isolate immediate hazard area, secure the scene, and deny entry for all non-rescue
personnel.
D. Assess on-scene capabilities and determine the need for additional resources.

Question 12

It must be determined if this will be a _____ operation or a ______ operation
based on the survivability profile of the victim(s) which include factors such as the
location and condition of the victim(s), and elapsed time since the accident occurred.

Answer 12

RESCUE, RECOVERY

Question 13

Establish a hazard zone perimeter of ___ feet from the collapse area.

Answer 13

50 feet

Question 14

Remove all non-essential civilian personnel at least ___ feet away from the collapse area.

Answer 14

150 feet

Question 15

Stage apparatus at least ___ feet from the collapse area

Answer 15

150 feet

Question 16

All heavy equipment operating within ___ feet of the collapse area should be shut down.

Answer 16

300 feet

Question 17

An open trench should be approached from?

Answer 17

the ends if possible.

Question 18

In order to make a trench safe ingress and egress ladders should be placed into the trench. There should be at least __ ladders placed into the trench no more than ___ feet apart.

Answer 18

2, 50 feet

Question 19

There are three types of shoring system used in trench rescue. What are they?

Answer 19

hydraulic shore, pneumatic shore,

timber shore

Question 20

OSHA Regulations ________________ regulates excavations for general industry
and the rescue service and shall be considered the basis for emergency trench rescue operations.

Answer 20

Standard 29 CFR 1926 Subpart P

Question 21

M.P 204.09 breaks victim removal into two categories. What are they?

Answer 21

INCIDENTS WITHOUT COLLAPSE, INCIDENTS WITH COLLAPSE

Question 22

Prior to termination of command the incident commander should ?

Answer 22

A. Ensure personnel accountability.
B. Remove tools, equipment, and the trench shoring system (last-in / first-out) from the
trench. In cases of a fatality, consider leaving everything in place until the
investigative process has been completed.
C. Consider a Post Incident Critique (may be more appropriate at a later date).
D. Return to service after turning the scene over to the responsible party and ensuring
the scene is secure.

Question 23

Rescue teams, Lobby, Ventilation, Air Monitoring, Shoring, Cut teams,
and any other such functional team operating in the hazard zone shall be under the direction of _________.

Answer 23

Rescue Sector

Question 24

Command should maintain awareness of the time of day. Why?

Answer 24

To ensure sufficient lighting is available on

the scene if operations extend into the night.