Chapter 8 Overhaul

Question 1

What is the primary purpose of overhaul operations in structure fires?

Answer 1

To locate and extinguish any remaining fire

Question 2

During overhaul operations, what do fireground personnel tend to do after a fire has been contained or extinguished?

Answer 2

to relax

Question 3

Why can mezzanines pose a special hazard during overhaul operations?

Answer 3

A combination of being weakened by the fire and sustantial loads imposed by storage

Question 4

What operation should be considered, if not completed, before overhaul commences?

Answer 4

Fire cause investigation

Question 5

What is the two-bottle rule?

Answer 5

If a firefighter has used two 30-minute bottles or has worked for 40 minutes, he is a prime candidate for a minimum rest of 10 minutes and rehydration before being allowed to resume work

Question 6

Describe a systematic approach to finding hidden fire.

Answer 6

Overhaul should start by the area of origin (first priority), then progress upward (second priority), then downward (third priority)

Question 7

Why can plastic sheeting be more advantageous than salvage covers?

Answer 7

Ease of implementation and the ability to leave it on the scene when finished

Question 8

Why can ABS plastic pipe pose significant overhaul problems?

Answer 8

ABS pipe will readily burn and act as a vehicle to spread fire through the structure. It also makes copious amounts of smoke when it burns.

Question 9

How can wet water siplify overhaul operations?

Answer 9

It lessens the surface tension of water, thereby increasing the ability of water to penetrate various materials

Question 10

How far should overhaul piles be kept from a structure?

Answer 10

At least 3 feet.

Question 11

What are the major factors in determining the type of overhaul?

Answer 11

1. Nature of occupancy
2. Its stability
3. Materials present
4. Size of fire

Question 12

What are the main objectives of overhaul? (4)

Answer 12

1. Complete extinguishment
2. Determine cause
3. Loss determination for insurance, owners..
4. Leave building in safe condition and secure unauthorized entry

Question 13

Why should an Incident Commander survey the building prior to overhaul? (5)

Answer 13

1. Review unsafe conditions
2. Determine probable origin
3. Determine nature and extent of overhaul
4. Develope overhaul strategy
5. Ensure proper resources

Question 14

What is the top priority in any overhaul operation?

Answer 14

Personnel safety

Question 15

What must be evaluated before overhaul concerning structural stability?

Answer 15

Size of fire
Extension of fire
Duration of fire
Type of construction
Type of building

Question 16

What are areas that Asbestos is commonly found?

Answer 16

Sprayed acoustic ceilings
Floor tiles
Hot water pipe insulation
Insulation in boiler rooms
Insulated ducting
Old style "blown" insulation

Question 17

How much does water weigh?

Answer 17

8.35 lbs

Question 18

Concerning overhaul, when should fire cause investigation be completed?
Why?

Answer 18

Before overhaul.

moving debris can thwart a successful fire cause investigation

Question 19

What should an Incident Commander consider when evaluating individuals for rehab?

Answer 19

1. Conditions
2. Duration
3. Exertion level of personnel
4. Whether the overhaul is at the beginning or end of tour of duty
5. Weather conditions

Question 20

What is referred to as deadman?

Answer 20

Decking material that overhangs a rafter.

Question 21

Overhaul operatoins can provide an excellent opportunity to train members in what?

Answer 21

Building construction

Question 22

During overhaul, when should you seriously consider using SCBA?

Answer 22

Carbon Monoxide of 50ppm or other contaminants are present

Question 23

What is a wet water Proportioner?

Answer 23

It is a direct-demand, variable-flow proportioner (ratio of 1:6,000 to 1:10,000 parts wet water to water)

Question 24

What is a cost effective alternative to the wet-water proportioner?

Answer 24

Anti-siphon sprayer or lawn fertilizer applicator

Question 25

When a fire has occured in a structure and it is advantageous to leave the fire debris inside the structure, what should be done?

Answer 25

1. Charged line
2. Remove salvageable items from fire area
3. Use minimal water
4. Evaluate potential consequences before placing overhaul piles on combustible floors
5. Keep overhaul piles at least 2 feet from walls
6. Do not mix overstuff with other fire debris
7. Seperate burned/unburned, salvageable/unsalvageable

Question 26

Fires in restaurants normally require the notification of whom?

Answer 26

Health Department authority