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Flashcards in SMAW One Deck (38)
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0

Who is responsible for the personal safety of everyone in the shop?

A) shop foreman
B) plant superintendent
C) individual worker
D) Alberta occupational health & safety

C) individual worker

1

Temporary blindness is caused by the eyes being exposed to high concentrations of:
A) red light
B) yellow light
C) green light
D) visible light

D) visible light

2

Exposure to infrared light while cutting without proper eye protection can cause:

A) sunburn
B) arc flash
C) retina damage
D) temporary blindness

C) retina damage

3

Permanent eye damage in the form of cataracts may result from over exposure to which harmful light ray?

A) visible
B) infrared
C) ultraviolet light
D) reflected

B) infrared

4

Which type of radiant energy can cause welding flash?

A) visible light
B) infrared light
C) ultraviolet light
D) gamma rays

C) ultraviolet light

5

What must be done where the general public is exposed to harmful welding rays?

A) put up proper screens and warning signs
B) let people look out for themselves
C) weld only when no one is around
D) avoid the use of a long arc length

A) put up proper screens and warning signs

6

What should you do if you receive a major contact burn?

A) immediately rub the affected area with antibiotic creme
B) seek professional medical attention at the end of your work shift
C) immediately cool the burned area by immersing in cool, still water
D) immediately place the burned area under a fast-running warm water tap

C) immediately cool the burned area by immersing in cool, still water

7

One of the most common work hazards is:

A) heavy weights
B) high noise levels
C) other workers
D) poisonous gases

B) high noise levels

8

Which operation could create a noise level resulting in permanent hearing damage?

A) air arc gouging
B) pneumatic chipping operations
C) grinding
D) any of the above operations

D) any of the above operations

9

Hearing protection should be worn when the noise level is above:

A) 65 decibels
B) 85 decibels
C) 115 decibels
D) 135 decibels

B) 85 decibels

10

The noise level of conversational speech is approximately:

A) 35 decibels
B) 45 decibels
C) 65 decibels
D) 85 decibels

C) 65 decibels

11

What type of head protection is recommended for grinding operations?

A) full- face visor
B) safety glasses with side shields
C) welding goggles
D) photoelectric welding helmet

A) full- face visor

12

What should you wear for eye protection while oxyfuel cutting?

A) flash goggles and a clear face shield
B) a welding helmet with a clear lens
C) safety glasses with #2 shade
D) safety glasses and cutting goggles

D) safety glasses and cutting goggles

13

What shade of filter plate is recommended for most low to medium amperage SMAW operations?

A) 5 or 6
B) 8 or 9
C) 10 or 11
D) 12 or over

C) 10 or 11

14

Why should you place a gasket between the outside clear plate and the filter plate in your welding helmet?

A) so the filter plate does not get covered with smoke
B) it helps remove excess heat from the helmet
C) to help fill up the space in the flip up part of the helmet
D) to help prevent heat cracking of the filter plate

D) to help prevent heat cracking of the filter plate

15

Which type of material offers the best protection against sparks and molten slag?

A) leather
B) wool
C) nylon
D) cotton

A) leather

16

What type of gloves are recommended for oxyfuel cutting?

A) hard twist cotton
B) silicon-treated nylon
C) dry-tanned gauntlet style
D oil-treated cowhide with external cotton stitching

C) dry-tanned gauntlet style

17

A class C. Fire involves:

A) combustible metals
B) electrical equipment
C) flammable liquids
D) household combustibles

B) electrical equipment

18

A carbon dioxide fire extinguisher is best suited for:

A) a class A fire
B) a class D fire
C) wood or paper fires
D) a class B or C fire

D) a class B or C fire

19

A class D fire involves:

A) wood & paper
B) oil or grease
C) flammable hydrocarbon vapours
D) combustible metals

D) combustible metals

20

What type of fire can be extinguished with water?

A) class A
B) class B
C) class C
D) class D

A) class A

21

What must be done prior to welding or cutting operation being performed in an area not normally designed for this type of work?

A) spray all combustibles with water
B) protect or remove all combustibles
C) cover up the entire floor area
D) install high-flow ventilating fans

B) protect or remove all combustibles

22

Concrete floors should be protected from concentrations of hot slag because:

A) the slag build-up on the cement presents a tripping hazard
B) it is difficult to remove the slag from the floor
C) the floor may become a conductor of electricity from the slag
D) hot slag can cause the surface of the cement to explode, creating a personal injury hazard

D) hot slag can cause the surface of the cement to explode, creating a personal injury hazard

23

When welding on metals plated with cadmium:

A) use fully deoxidized filler metal to avoid porosity
B) appropriate respiratory protective equipment should be used
C) general mechanical ventilation is adequate provided there are four complete air changes per hour
D) a dust filter mask should be worn

B) appropriate respiratory protective equipment should be used

24

Which metal, when heated or welded, can produce metal fume fever if the fumes are inhaled?

A) aluminum
B) zinc
C) chromium
D) cobalt

B) zinc

25

Poisonous phosgene gas can be creates by vapours of chlorinated hydrocarbon degreasers when the vapours are acted upon by:

A) local or general ventilation
B) high concentrations of visible light
C) heavy volumes of fumes
D) ultraviolet radiation from the welding arc

D) ultraviolet radiation from the welding arc

26

When oxygen reacts with ultraviolet light from welding, the gas produced is:

A) phosphine
B) nitrogen dioxide
C) ozone
D) carbon monoxide

C) ozone

27

The first line of defence against welding fumes and gases is:

A) a supplied air respirator
B) source extraction equipment
C) complete all welding during the first half of your shift work
D) weld outside

D) weld outside

28

Explain how a mechanical general ventilation system works.

Occurs when air is pumped into a shop, is vented through doors, windows and ductwork. It can include fans to produce/cycle air put 4 times per hour.

29

Why is a fit important when using a respirator?

A) so more than one worker can use it
B) so you look professional on the job
C) to prevent inward leaks of contaminated air
D) so you do not have to shave every day

C) to prevent inward leaks of contaminated air