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OSH > Previous Midterm > Flashcards

Previous Midterm Flashcards

1
Q

When a worker fails and hangs by the fall arrest system, rescue should be done within __ to __ minutes.

A

5-10 minutes

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2
Q

Poses the greatest risk in excavating and trenching works

A

Cave-ins

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3
Q

When excavating or trenching, keep surcharge loads at least __ feet away from the edges

A

2 feet

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4
Q

Process of permanently joining two or more materials together, usually metals, by heat, or pressure or both

A

Brazing

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5
Q

A job which is not considered as a common hot work

A

Drilling

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6
Q

Atmospheric oxygen is safe between __ to __% in the workspace

A

19.5 to 23.5

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7
Q

When the level of oxygen falls below __%, judgement and coordination suffers

A

16

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8
Q

When the level of oxygen falls below __%, difficulty of breathing and drowsiness occurs.

A

16

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9
Q

When the level of oxygen falls below __%, a person becomes unconscious.

A

12

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10
Q

When the level of oxygen falls below __%, death occurs.

A

6

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11
Q

The level of oxygen can fall if the confined space contains-

A

Methane which pushes oxygen out of an area

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12
Q

The level of oxygen can fall if the confined space contains-

A

Carbon Dioxide which absorbs oxygen

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13
Q

Which atmospheres are all hazardous?

A

toxic, flammable, foul-smelling

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14
Q

Toxic substances such as ___, can cut off breathing

A

Carbon Monoxide

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15
Q

Toxic substances (smells like rotten eggs) such as ___, can cut off breathing

A

Hydrogen Sulfide

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16
Q

When testing for atmospheric hazards, the order of testing must be -

A

oxygen, combustible gasses & vapors, toxic gasses & vapors

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17
Q

A PRCS job location cannot be entered without a permit

A

True

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17
Q

Which hazardous gas is lighter than air?

A

Methane

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18
Q

Which hazardous gas is heavier than air?

A

Hydrogen Sulfide

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19
Q

The use of special tools and lighting or extra low voltage equipment require that such should not have a voltage exceeding ___ (ac) volts.

A

50

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20
Q

The best way of hazard control for confined spaces is -

A

Elimination

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21
Q

The use of special tools and lighting or extra low voltage equipment require that such should not have a voltage exceeding ___ (dc) volts.

A

120

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22
Q

A confined space -

A

has a limited or restricted means of entry/exit but is large enough for a worker to enter and perform his job

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23
Q

The most versatile for of energy.

A

Electrical

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24
Q

Which can cause an electrical accident?

A

Overloading

25
Q

Which is a secondary effect of electrical hazards?

A

Falls

26
Q

Which is the best conductor?

A

Silver

27
Q

Which is not a factor affecting electrical shock?

A

quality/brand of device

28
Q

At ___ ma of current (minimum amount) through the body, ventricular fibrillation is certain and thus fatal.

A

100

29
Q

The safe “let-go” current which may cause a secondary accident is ___ to ___ mA

A

5-16

30
Q

A fast-acting circuit device which senses small imbalances in the circuit caused by current leakage to ground and, in a fraction of a second, shuts off the electricity.

A

GFCI

31
Q

These are calibrated conductors which will melt and break (open) the electrical circuit when too much current flows through them. This stops the flow of electricity before any problem can develop.

A

Circuit Breaker

32
Q

A device that utilizes a positive means such as a lock to hold an energy isolating device in the safe position and prevents the energizing off an equipment

A

Lock-out device

33
Q

Can be securely fastened to an energy isolating device in accordance with an established procedure to indicate that the energy isolating device and the equipment being controlled can not be operated until the tag is removed

A

tagout device

34
Q

In case of an electrical accident, one must ___.

A

Immediately turn off the electrical power source

35
Q

The Occupational and Safety & Health Standards for Machine Guarding:

A

RULE 1200

36
Q

Whose responsibility is it not to operate equipment unless guards are in place?

A

Employees

37
Q

Which is an in running nip point?

A

Rotating Cylinders

38
Q

Provides a barrier which is a permanent part of the machine, preferable to all other types of guards

A

Fixed Guard

39
Q

Which is not a characteristic of a machine?

A

Moves with indefinite relative motions

40
Q

The following ar effects of poor machine safety except

A

Hiring additional workers

41
Q

In modern print presses, the in running nip point is usually found in

A

Rotating cylinders

42
Q

In the methods of machine safeguarding, the following are considered “guards” but not

A

Pullback

43
Q

Provides a barrier which moves according to size of the stock entering the dangerous area

A

Self-adjusting guard

44
Q

In the methods of machine safeguarding, the following are considered “devices” but not-

A

Hand feeding tools

45
Q

It is not a fatal “main cause” of maintenance injuries

A

Failure to start the equipment

46
Q

In modern printing presses, the in running nip point is usually found in

A

Rotating cylinders

47
Q

Placing the machines so that the operator is not exposed to aisle traffic is an example of

A

Engineer the hazards out of the job

48
Q

Human failure can result from not using the following mechanical devices except

A

Adequate lighting

49
Q

In the methods of machine safeguarding, the following are considered “guards” but not

A

Gates

50
Q

Who is responsible in ensuring that machine guards remain in place and are functional

A

Supervisors

51
Q

When this type of guard is removed, the tripping mechanism and power automatically shuts off and the machine cannot be cycled or started until the guard is back in place

A

Interlocked guard

52
Q

The number 1 cause of death in construction industry

A

Falls

53
Q

Work at height means work in any place where if there were no precautions in place, a person could fall a distance liable to cause personal injury but is only above ground level

A

True

54
Q

Objects falling from height onto someone below can also cause

A

All a, b,c

55
Q

When using a ladder to climb a height of 20 feet the base of the ladder should be __ feet from the base of the wall

A

5

56
Q

This fall protection control prevents a fall from unprotected edges or openings

A

Guard rails and protective covers

57
Q

This fall protection control allows a worker to reach the edge but not fall over it

A

Travel restraint system

58
Q

This fall protection control is designed to limit a fall distance of 0.6m or 2 feet

A

Fall restricting system

59
Q

Standard guard rails should have a vertical height of at least __ inches

A

39

OSH (10 decks)

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