Question

self - test

1. permanent eye damage in the form of cataracts or retinal damage may result from over exposure to which harmful light ray?

a) visible
b) infrared
c) ultraviolet
d) reflected

1. which type of radiant energy can cause welding flash?

a) visible light
b) infrared light
c) ultraviolet light
d) gamma rays

1. what must be done where the 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.

1. what should you do immediately if you receive a major contact burn?

a) rub the affected area with antibiotic cream.
b) seek professional medical attention.
c) cool the burned area by immersing in cool, still water.
d) place the burned area under a fast - running warm water tap.

1. one of the most common workshop hazards is:

a) heavy weights.
b) high noise levels.
c) other workers.
d) poisonous gases.

1. hearing protection should be worn when the noise level is above:

a) 65 decibels.
b) 85 decibels.
c) 115 decibels.
d) 135 decibels.

1. what type of eye protection is recommended for grinding operations?

a) full - face visor and safety glasses
b) side shields
c) welding goggles
d) photoelectric welding helmet

1. what shade of filter plate is recommended for medium amperage gmaw operations?

a) 9
b) 10
c) 11
d) 12 or over

Explanation:

1. Ultraviolet light can cause permanent eye damage like cataracts or retinal damage.
2. Ultraviolet light is responsible for welding flash.
3. When the public is exposed to harmful welding rays, proper screens and warning signs should be put up for safety.
4. For a major contact burn, the first - step is to cool the burned area by immersing in cool, still water.
5. High noise levels are one of the most common workshop hazards.
6. Hearing protection should be worn when noise levels are above 85 decibels.
7. For grinding operations, side shields are a recommended type of eye protection.
8. For medium - amperage GMAW operations, a shade 10 filter plate is recommended.

Answer:

1. c) ultraviolet
2. c) ultraviolet light
3. a) Put up proper screens and warning signs.
4. c) Cool the burned area by immersing in cool, still water.
5. b) high noise levels.
6. b) 85 decibels.
7. b) side shields
8. b) 10