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AO Study Material 2020 Test > TB 44 - Rotary Saw > Flashcards

TB 44 - Rotary Saw Flashcards

(57 cards)

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1
Q

What safety equipment should be used at all times while operating the rotary saw?

A

Gloves
Goggles
Helmet

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2
Q

If an electrical hazard is suspected or exists, what gloves shall be used?

A

Gauntlet gloves

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3
Q

What type of member shall be utilized in all cases while operating rotary saw?

A

Safety member

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4
Q

What are the 2 unique hazards to the rotary saw that make it extremely dangerous?

A

Blade continues to spin at high rpms long after throttle is released
Gyroscopic effect cause by spinning blade

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5
Q

Do to hot sparks being thrown while cutting which can provide and ignition source in flammable atmospheres, firefighters should have what in place prior to cutting operations?

A

Loaded line or dry chem extinguisher

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6
Q

What may be necessary to use to shield patients from sparks?

A

Aluminized blanket

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7
Q

Hot sparks can be thrown up to how many feet from the cutting area?

A

15 feet

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8
Q

The Homelite XL98 requires what inch diameter blade?

A

12 inch

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9
Q

The partner k-1200 saw normally utilizes what inch diameter blade?

A

14 inch

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10
Q

Can the 12” homelite blade be used on the partner saw as well?

A

Yes

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11
Q

Can the 14” blade fit in the homelite saws?

A

No

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12
Q

What 3 cutter blades are available for the rotary saw?

A

Carbide tipped (wood cutting)
Abrasive (masonry/metal)
Diamond (concrete)

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13
Q

The wood cutting carbide tip blade can cut what materials?

A

Composition roof material
Wood
Lexan

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14
Q

You can also use the wood cutting carbide tipped blade on what material when used with care?

A

Door cladding or aluminum sheet

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15
Q

Masonry cutting abrasive blades are identified with what color stripes?

A

White or silver

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16
Q

Masonry cutting blade life can be extended by applying what on the work surface as this cools and reduces dust?

A

Water

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17
Q

The masonry cutting blade can also be used as a back up blade to cut what type of materials?

A

Light metals

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18
Q

The masonry cutting abrasive blade comes in what sizes?

A

12” and 14”

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19
Q

The abrasive metal cutting blade can be identified by what color blotter label?

A

Green

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20
Q

The metal abrasive cutting blade is available in what sizes?

A

12” and 14”

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21
Q

The diamond cutting blade has what material fastened to the outer edge?

A

Synthetic diamond material

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22
Q

What is located near the hub of the blade for the diamond blade to indicate direction of blade rotation?

A

Arrows

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23
Q

You should avoid cutting what with the diamond blade as it will reduce blade life?

24
Q

The diamond cutting blade is available in what size?

25
Diamond blades shall be reserved for emergency operations only, where can you obtain a blade for training sessions?
Battalion headquarters
26
A feature of the rotary saw is that it has a reversible blade and guard, for best results as a rescue saw, the blade and guard can be mounted to what position?
Outboard
27
Placing the rotary saw in the outboard position allows cuts to be made in close what to walls and floors?
Proximity
28
Placing the rotary saw in the onboard position is optimum for what use?
Ventilation
29
When place in the inboard position for ventilation, what can be used as a depth gauge?
The blade guard
30
When placed in the onboard position for ventilation, what can be used as pivot and skid and reduces blade bind?
Lower portion of the carrying handle
31
Ventilation can be accomplished with blade and guard in outboard, but extra care would have to be taken to prevent bind since blade and handle would be what with each other?
Out of line
32
The rotary saw is excellent when used for cutting thick or heavy roof composition found on what type of roofs?
Flat or older types of construction
33
The operator may experience problems of attempting to use on a steep pitched roof mainly due to what?
Reduced reach and gyroscopic effect
34
When using the rotary saw for ventilation, the ability to feel what is more difficult?
Structural members
35
If using the rotary saw for ventilating light weight roofs, particular care should be taken to assure proper what?
Depth of cut
36
What are the daily checks of the rotary saw (7)?
``` Fuel level Blade sharpness and mounting Blade guard condition Belt tension Loose nuts or bolts Proper starting position Carrying strap ```
37
What are the weekly checks of the rotary saw?
Start and operate until warm Run up rpm, blade runs smooth/true Listen for abnormal sounds
38
What are the monthly checks for the rotary saw?
``` Spark plug gap Check bearings on arbor Engine case for cracks or leaks Fuel assembly for cracks or leaks Condition of blotters Belt for condition and tension Replace fuel if not used for 30 days ```
39
What are the spark plug gaps for the homelite and partner saws?
Homelite: .025 Partner: .020
40
When should the carbide tipped wood cutting blade be replaced?
If missing a tip or visible radius appears
41
What should not be used to clean paper air filters?
Compressed air or solvents
42
When removing abrasive dust on rotary saw by blowing with compressed air you should wear what?
Goggles | Respiratory protection
43
If abrasive material is allowed to build up in the guard it can break loose in the form of what and be thrown out by force of the blade?
Small rocks
44
Before mounting any abrasive blades new or used, inspected blade for signs of what?
Deterioration Petroleum product contamination Wear and cracks
45
What is the minimum diameter use for blades on a partner and homelite saw for emergency use?
Partner: 12” Homelite: 10”
46
Blade that are worn beyond the limits may be used for what purposes?
Drill purposes
47
Abrasive blades (metal or masonry) shall not be forwarded for exchange unless the total diameter is what inches or less?
9 inches or less
48
Blades which have been damaged and are no longer safe for use shall be marked with an F-175 tag and what word shall be marked on the blade before forwarding for replacement?
UNSAFE
49
Abrasive blades must be rated for spindle speeds of what rpm and sandwiched between blade bloggers for irregularities and thickness?
5000 rpm
50
By mounting the cutting arm in the onboard position it provides better what for the saw during operation?
Balance
51
By mounting the cutting arm in the outboard position is permits for making what kind of cuts?
Flush
52
When storing the saw, it should be placed in what position?
Upright
53
Store blades in a safe dry location to protect them from damage and possible contact with what products?
Petroleum
54
Contamination of a composition blade with petroleum products may cause the blade to what when used?
Shatter
55
When sent to S and M, the saw should be clean and empty of what?
Fuel
56
What is the proper fuel mixture for the rotary saw?
50:1
57
For flooding procedures, turn saw its side on exhaust side down, choke off, starting position in off and pull starter cord how many times?
4-5 times

AO Study Material 2020 Test (124 decks)

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