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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
Which can cause an electrical accident?
Overloading
25
Which is a secondary effect of electrical hazards?
Falls
26
Which is the best conductor?
Silver
27
Which is not a factor affecting electrical shock?
quality/brand of device
28
At ___ ma of current (minimum amount) through the body, ventricular fibrillation is certain and thus fatal.
100
29
The safe "let-go" current which may cause a secondary accident is ___ to ___ mA
5-16
30
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.
GFCI
31
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.
Circuit Breaker
32
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
Lock-out device
33
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
tagout device
34
In case of an electrical accident, one must ___.
Immediately turn off the electrical power source
35
The Occupational and Safety & Health Standards for Machine Guarding:
RULE 1200
36
Whose responsibility is it not to operate equipment unless guards are in place?
Employees
37
Which is an in running nip point?
Rotating Cylinders
38
Provides a barrier which is a permanent part of the machine, preferable to all other types of guards
Fixed Guard
39
Which is not a characteristic of a machine?
Moves with indefinite relative motions
40
The following ar effects of poor machine safety except
Hiring additional workers
41
In modern print presses, the in running nip point is usually found in
Rotating cylinders
42
In the methods of machine safeguarding, the following are considered "guards" but not
Pullback
43
Provides a barrier which moves according to size of the stock entering the dangerous area
Self-adjusting guard
44
In the methods of machine safeguarding, the following are considered "devices" but not-
Hand feeding tools
45
It is not a fatal "main cause" of maintenance injuries
Failure to start the equipment
46
In modern printing presses, the in running nip point is usually found in
Rotating cylinders
47
Placing the machines so that the operator is not exposed to aisle traffic is an example of
Engineer the hazards out of the job
48
Human failure can result from not using the following mechanical devices except
Adequate lighting
49
In the methods of machine safeguarding, the following are considered "guards" but not
Gates
50
Who is responsible in ensuring that machine guards remain in place and are functional
Supervisors
51
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
Interlocked guard
52
The number 1 cause of death in construction industry
Falls
53
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
True
54
Objects falling from height onto someone below can also cause
All a, b,c
55
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
5
56
This fall protection control prevents a fall from unprotected edges or openings
Guard rails and protective covers
57
This fall protection control allows a worker to reach the edge but not fall over it
Travel restraint system
58
This fall protection control is designed to limit a fall distance of 0.6m or 2 feet
Fall restricting system
59
Standard guard rails should have a vertical height of at least __ inches
39

OSH (10 decks)

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