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Welder 1 > Module 5 Welding Safety > Flashcards

Module 5 Welding Safety Flashcards

1
Q

What type of light energy causes arc flash, also known as welding, flash or arc eye?
A) visible light rays
B) ultraviolet rays
C) infrared rays
D) gamma rays

A

B) ultraviolet rays

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2
Q

What is the maximum permitted sound level for an eight hour day?
A) 85db
B) 88db
C) 90db
D) 95db

A

A) 85db

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3
Q

When treating hypothermia, the body temperature of the individual should be raised slowly true or false

A

True to treat hypothermia the body temperature must be raised slowly warm liquids without caffeine and medical attention should be given as soon as possible

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4
Q

What shade of filter plate should be used when welding using low to medium amperage while with the SMAW process
A) shade #6
B) shade #10
C) shade #11
D)Shade #12

A

B) shade #10

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5
Q

What type of clothing offers the best protection against Sparks and molten slag?
A) leather
B) Denim
C) Wool
D) Cotton

A

A) leather

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6
Q

What type of respirator should not be used if the atmosphere has been deemed immediately dangerous to life and health?
A) airline respirator
B) self-contained breathing apparatus
C) air purifying respirator
D) Pressure on demand respirator

A

C) air purifying respirator

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7
Q

What material is the major cause of metal fume fever
A) stainless steel
B) Zinc
C) Aluminum
D) Cadmium

A

B) Zinc

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8
Q

What gas is produced when chlorinated hydrocarbon degreasers are exposed to ultraviolet light?
A) argon gas
B) ethylene chloride gas
C) sulphur dioxide gas
D) phosgene gas

A

D) phosgene gas

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9
Q

What is the maximum allowable exposure to H2 S gas in an eight hour? Period.
A) 10pm
B) 50ppm
C) 100ppm
D) 1000ppm

A

A) 10pm

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10
Q

When a shop is using general ventilation system, how many changes of air per hour should it provide?
A) 2
B) 4
C) 6
D) 8

A

B) 4

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11
Q

What type of smoke extracting system filters and then recirculates the air back into the shop?
A) portable smoke extractor
B) local ventilation system
C) general ventilation system
D) isolation chamber

A

A) portable smoke extractor

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12
Q

Fume extracting welding guns are most often used with the FCAW process
true or false

A

True when welding, the FCAW process one of the disadvantages is the volumes of fumes produced using a few extracting gun helps minimize this hazard

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13
Q

Power sources should be connected by a qualified electrician to ensure they have been properly grounded.
True or false

A

True

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14
Q

What should be done to electrically operated equipment prior to repair?
A) send out an email to to alert workers
B) lockout, and warning notices posted
C) let your direct supervisor know
D) walk around the shop and verbally tell workers

A

B) lockout, and warning notices posted

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15
Q

Who has the responsibility of placing the lockout tag on the equipment circuit breaker prior to work being started?
A) a qualified electrician
B) the manufacturer of the equipment
C) your supervisor
D) the worker doing the repairs

A

D) the worker doing the repairs

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16
Q

After completing a welding job in a residential area, how long should someone designated as firewatch remain on site?
A) 30 min
B) 45 min
C) 60 min
D) 2 hrs

A

C) 60 min

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17
Q

Hydrogen sulphide gas is lighter than air
True or false

A

False H2 S gas is heavier than air 1.18 compared to 1.00

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18
Q

When making a container safer welding by purging which gas should be used?
A) oxygen
B) argon
C) acetylene
D) hydrogen

A

B) argon

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19
Q

You have been assigned to work on steel beams high above the ground provide your general protection information from the OHS act that ensures the safety of yourself and those around you.

A

OHS code part 9 section 139
you should be tied off if you were
- working three or more metres high
- If there is an unusual possibility of injury at a decent of less than 3 m
- into or a hazardous substance or object or to avoid a fall through an opening in a worksurface
- at a permanent work area where the heights is more than 1.2 m less than three

20
Q

You have been tasked with using a portable angle grinder to smooth down rough edges on a beam. What safety precautions should you take to avoid accidentally entering yourself or others as well as avoid damaging the equipment or the surrounding area?

A

OHS code part 25 section 375
You should:
- Operate the grinder in accordance with manufacturer specifications
- Ensure that the RPM of the disc should be equal or greater to the RPM of the grinder
- Ensure that the object ground is stationary using a handheld grinder

21
Q

While in the shop you noticed that your coworker is not wearing their hardhat what section of the OHS act detailed safety requirements for head protection and what does it say?

A

OHS code part 18 section 234
You should wear protective headwear if :
- There’s a foreseeable danger to the workers head
- must be appropriate to the hazards and meet requirements of CSA standard CSA Z94.1–05

22
Q

Permanent eye damage in the form of cataracts or retinal damage can result from ore exposure to which harmful light ray?
A) visible
B) Infrared
C) ultraviolet
D) reflected

A

B) Infrared

23
Q

Which type of radiant energy can cause welding flash ?
A) visible light
B) infrared light
C) ultraviolet light
D) gamma rays who is

A

C) ultraviolet light

24
Q

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) well only when no one is around
D) avoid the use of long arc length

A

A) put up proper screens and warning signs

25
Q

What should you do immediately if you receive a major contact burn?
A) the affected area with antibiotic cream
B) seek professional medical attention
C) cool the burned area by immersing in Stillwater
D) place the burn area under a fast running warm water tap

A

C) cool the burned area by immersing in Stillwater

26
Q

Which of the following is the most common workshop hazard?
A) heavy weights
B) high noise levels
C) other workers
D) poisonous gases

A

B) high noise levels

27
Q

Above what noise level should hearing protection be worn?
A) 65db
B) 85 db
C) 115 db
D) 135 db

A

B) 85 db

28
Q

What type of eye protection is recommended for grinding operations?

A

Full face visor and safety glasses

29
Q

What shade of filter plate is recommended for medium amperage GMAW operations?
A) #9
B) #10
C) #11
D) #12 or over

A

C) #11

30
Q

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

A

Leather

31
Q

What gloves are recommended for oxy fuel cutting?
A) hard twist cotton
B) silicon treated nylon
C) dry, tanned, leather gauntlet style
D) oil treated cowhide with external cotton stitching

A

C) dry, tanned, leather gauntlet style

32
Q

Why is a fit test important when using a respirator? A) more than one worker can use it.
B) you look professional on the job
C) inward leaks of contaminated air are prevented
D) you do not have to shave every day

A

C) inward leaks of contaminated air are prevented

33
Q

Poisonous phosgene gas can be created by vapours or chlorinated hydrocarbon degreasers. What acts upon the vapours to create the gas?
A) local or general ventilation
B) high concentration of visible light
C) heavy volumes of fumes
D) ultraviolet radiation from the welding ark

A

D) ultraviolet radiation from the welding ark

34
Q

Which type of respirator uses filters and cannot be safely used in oxygen deficient atmospheres?
A) air purifying
B) airline
C) SCBA’s
D) emergency escape, breathing apparatus

A

A) air purifying

35
Q

Which metal when heated or welded produces metal fume fever if the fumes are inhaled?
A) aluminum
B) zinc
C) chromium
D) cobalt

A

B) zinc

36
Q

What gas is produced when oxygen reacts with ultraviolet light from welding?
A) phosphine
B) nitrogen dioxide
C) ozone
D) carbon monoxide

A

C) ozone

37
Q

When welding on metals plated with cadmium, which of the following is true?
A) use a fully deoxidized filler media to avoid porosity
B) consult SDS for safety procedures to follow
C) General mechanical ventilation is adequate provided. There are four complete air changes per hour.
D) dust filter mask should be worn

A

B) consult SDS for safety procedures to follow

38
Q

H2 S found in oil and gas wells in concentrations as low as 500 ppm (.05%) causes which of the following?
A) an uncomfortable, rotten egg smell
B) unconsciousness, and death
C) an explosion
D) burning of the eyes and throat

A

B) unconsciousness, and death

39
Q

What is the first line of defence against welding, fumes, and gases??
A) a supplied air respirator
B) source extraction equipment
C) complete all welding during the first half of your work shift
D) weld outside

A

D) weld outside

40
Q

What device breaks the current flow while still at a low level to protect people from electrical shock?
A) heavy duty circuit breaker (HDCB)
B) ground fault circuit interrupter ( GFCI)
C) heavy duty electrode holder (HDEH)
D) transformer rectifier Silicon diode (TRSD)

A

B) ground fault circuit interrupter ( GFCI)

41
Q

What method makes welding safe on a vessel that has contained a flammable substance?
A) steaming thoroughly and welding while hot and still full of steam
B) steaming well, then allowing the vessel to cool and dry out
C) ceiling, all vents tightly to prevent atmospheric air from getting inside
D) using a hot water flush, followed by cold water and a drying out period

A

A) steaming thoroughly and welding while hot and still full of steam

42
Q

When working in confined spaces, where should cutting torches be ignited and extinguished?

A

Outside the confined space

43
Q

Before entering a vessel to make repairs, what test should you first insist upon?
A) leaks in the vessel and piping system
B) fumes and oxygen deficiency
C) corrosion or erosion tolerances
D) Blockages ventilation systems

A

B) fumes and oxygen deficiency

44
Q

What is the verified oxygen content before a worker is authorized to enter a confined space?
A) 7% to 12% by volume
B) it looks2psi to 12 psi
C) 19.5% to 23% by volume
D) 24% to 29% by volume

A

C) 19.5% to 23% by volume

45
Q

Who is responsible for the personal safety of everyone in the shop?
A) supervisor
B) plant superintendent
C) individual worker
D) Alberta, OH & S

A

C) individual worker

Welder 1 (20 decks)

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