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Safety Questions Flashcards

1
Q

What are Fire Extinguishers with A used for?

What do the symbols look like?

A
  • Ordinary combustables
  • A green triangle with A inside
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2
Q

What are B fire extinguishers used for?

What do they look like?

A
  • Flammable or combustable vapours
  • Red square with a B inside.
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3
Q

What are C extinguishers used for?

What do they look like?

A
  • Fires involving energized electrical equipment.
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4
Q

What are D extingushers used for?

What do they look like?

A
  • Fires involving certain combustable metals, such as magnesium, titanium, zirconium, sodium, or potassium.
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5
Q

At what height can death occur when falling?

A

3m

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6
Q

What ladder do you use when working around electricity?

A

Fiberglass

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7
Q

What is the ratio for leaning a ladder upright?

A

4 to 1 or an angle of 75.5 degree

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8
Q

How high should a ladder extend past the top platform?

A

1m

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9
Q

What should an open ladder be no steeper than?

A

6 to 1

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10
Q

Can you paint a ladder?

A

No, not with anything other than a transparent protective coating.

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11
Q

What is a scaffold?

A

A temporary elevated platform and supporting structures designed to support workers, workers’ equipment and materials.

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12
Q

How much weight can a scaffold hold?

A

Only 1/4 of the load for which it is designed

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13
Q

Where does a scaffold need to be anchord?

A

Every 4.6 meters vertical and 6.4 meters horizontal

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14
Q

How high is a free standing scaffold or rolling scaffold allow to be?

A

3 times its smallest dimension of its base.

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15
Q

When are you allowed to be on a moving scaffold platform

A

If the height is no more then two times its smallest base demsion

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16
Q

How wide must a scaffold platform be?

A

No less then 1 m

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17
Q

How high must boots be made?

What must they be certified with?

A
  • 8 inches
  • CSA approved badge
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18
Q

What state must a machine be in to work on it?

A

Zero Mechanical State

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19
Q

Are combination locks allowed on machines?

A

No

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20
Q

An extension ladder of up to 36 feet must have an over lap of ____ feet.

A

3

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21
Q

An extension ladder 36 - 48 feet must have an overlap of ____ feet.

A

4

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22
Q

An extension ladder of over 48 feet must have ____ feet of overlap.

A

5

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23
Q

Step ladders must rise to within ____ feet of the work.

A

3 - 4

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24
Q

What is the maximum height of a stepladder?

A

20 ft

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25
Q

What are step ladders not to be used for?

A

Ways to access higher levels.

26
Q

Never work from the ____ rung(s) of ladders

A

Top 2 rungs

27
Q

What way can a ladder never be laid?

How should it be laid?

A
  • On its rungs. (Face down)
  • On its rail (side)
28
Q

What are two fall protection systems?

A
  • Fall Arrest System
  • Fall Restraint System
29
Q

What is a Fall Restraint System?

A

A system to prevent a worker from falling from a work position, or from traveling to an unguarded edge from which the worker could fall.

30
Q

What is a Fall Arrest System?

A
  • A means that will stop a worker’s fall before the worker hits the surface below.
31
Q

An __________ must ensure that a fall protection system is used when work is being done at a place that is ___ ft high?

A
  • Employer
  • 10ft
32
Q

A temporary fall arrest system must be able to handle _______ lbs

A
  • 5000lbs

Or twice the maximum arrest force.

33
Q

A temporary fall restraint system must be able to handle _____ lbs

A
  • 800 lbs

Or 4 times the weight of the worker

34
Q

The foundation for a Scaffold is usually what?

A

Heavy wooden plank called Mud Sill

35
Q

What dimenson should a single Mud Sill be?

A

2 x 10 x 10

36
Q

A free standing scaffold that is more than _______ higher than its minimum _____ dimension must be fastened to the building or supported by other means.

A

-Three times higher

  • Base dimension
37
Q

When must a guard rail be installed on a scaffold?

A

If the working surface of the scaffod is more than 3 m (10’) above the surrounding ground.

38
Q

How high must a safe guard rail be?

Can you use fibre or wire ropes for guard rails?

A
  • 40” to 44”
  • No
39
Q

What do toe boards do?

A

Prevent tools, materials, or equipment from falling off the scaffold.

40
Q

What are the dimensions of a toe-board?

A

4” in height and no more then 1/2” of clearance between their low edges and the work platforms.

41
Q

What species of lumber are acceptable for scaffold construction?

A
  • Douglas Fir Larch
  • Hem Fir
  • Spruce Pine Fir
  • Coast Sitka Spruce
42
Q

What is the minimum scaffold work platform width?

A

20”

43
Q

What is the maximum slope for a scaffold work platfrom?

A

1:5 slope

44
Q

How far apart must plank supports be apart for both light work and heavy work?

A
  • 10’ for light work
  • 7’ for heavy work
45
Q

How long must platform planks be?

A

6’ minimum

12’ maximum

46
Q

At what interval horizontally should a scaffold be secured to the building structure?

A

6.4 m (21’)

47
Q

Where is the first vertical attachment to a building for a scaffold.

What interval after this?

A
  • 3 times the minimum base dimension
  • Every 6m (20’) after that
48
Q

What additional safety procaution must be added to aluminum scaffolding?

A

It must be grounded or have rubber tires on the supports.

49
Q

What type of ground can you not put mud sills directly onto?

A

Frozen ground

50
Q

Rolling scaffolds should only be done on what floors?

A

Floors that are flat and within 3 degrees of level.

51
Q

All vertical scaffolds must be equipped with what?

A

Locking pins on the top and bottom of the wheel couplers.

52
Q

Height of rolling scaffolds must not exceed what?

A

Three times the base dimension.

53
Q

High voltage circuit breakers trip when an overload occurs and they also:

A

Extinguish the arc

54
Q

The main advantage of AC current over DC current is?

A

AC current can steped down or up.

55
Q

What does this symbole mean?

A

Oxidizer

56
Q

Answer.

A

A)

57
Q

Answer

A

A)

58
Q

Answer

A

A)

59
Q

Answer

A

D)

60
Q

Answer

A

C)

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