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MT Flashcards

1
Q

The most versatile form of energy

A

Electrical

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2
Q

Can cause an electrical accident

A

overloading

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3
Q

which is a secondary effect of electrical hazards

A

falls

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4
Q

which is the best conductor

A

silver

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5
Q

which is not a factor affecting electric shock

A

quality/brand of device

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6
Q

at __ma of current (minimum amount) through the body, ventricular fibrillation is certain and thus fatal

A

100 mA

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7
Q

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

A

5 to 16

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8
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

fuse

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9
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

look out device

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10
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

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11
Q

in case of an electrical accident, on must

A

immediately turn off the electrical power sourfce

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12
Q

the Occupational and Safety & Health Standards for Machine Guarding

A

RULE 1200

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13
Q

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

A

employees

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14
Q

When a worker falls and hands by the fall arrest system, rescue should be done within __ to __ minutes

A

5 to 10 minutes

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15
Q

Poses the greatest risk in excavating and trenching works

A

cave-ins

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16
Q

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

A

2 ft

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17
Q

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

A

Brazing

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18
Q

A job which is not considered as a common hot work

A

drilling

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19
Q

Atmospheric oxygen is safe when it is between __ to __ % in the work space

A

19.5 to 23.5 %

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20
Q

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

A

16%

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21
Q

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

A

16%

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22
Q

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

A

12%

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23
Q

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

A

6%

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24
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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25
Q

The level of oxygen can fall if the confined space contains

A

Carbon dioxide which absorbs oxygen

26
Q

Toxic substance such as __, can cut off breathing

A

Carbon Monoxide

27
Q

Toxic substance (smells like rotten eggs) such as __, can cut off breathing

A

Hydrogen sulfide

28
Q

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

A

oxygen, combustible gasses &vapors, toxic gasses & vapors

29
Q

A PRCS job location cannot be entered without a permit

A

TRUE

30
Q

Which hazardous gas is lighter than air?

A

Methane

31
Q

Which hazardous gas is heavier than air?

A

Hydrogen Sulfide

32
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 V

33
Q

The best way of hazard control for confined spaces is

A

Elimination

34
Q

the use of special tools and lighting or extra low voltage equipment require that such should ___(dc) volts

A

120 V

35
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

36
Q

Which is an IN_RUNNING NIP POINT?

A

Rotating Cylinders

37
Q

The following are effects of poor machine safety except

A

hiring additional workers

37
Q

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

A

Fixed Guard

37
Q

Which is not a characteristic of a machine

A

moves with idefinite relative motions

37
Q

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

A

rotating cylinders

37
Q

In the methods of machine safeguarding, the following are considered “Guards: but not

A

pullback

37
Q

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

A

self-adjusting guard

38
Q

In the methods of Machine Safeguarding, the following are considered “Devices” but not

A

hand feeding tools

39
Q

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

A

failure to start the equipment

40
Q

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

A

rotating cylinders

41
Q

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

A

engineer the hazards out of the job

42
Q

human failure can result from not using the following mechanical devices, except

A

adequate lightning

43
Q

in the methods of machine safeguarding, the following are considered “Guards” but not

A

gates

44
Q

who is responsible for ensuring that machine guards remain in place and are function

A

supervisors

45
Q

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

A

interlocked guard

46
Q

the number 1 cause of deaths in the construction industry

A

falls

47
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

6 feet

48
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

49
Q

Objects falling from height onto someone below can also cause

A

death, brain injuries, multiple fracture ( all a,b,c)

50
Q

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

A

guard rails & protective covers

51
Q

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

A

travel restraint system

52
Q

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

A

fall restricting system

53
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

53
Q

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

A

39 inches

53
Q

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

A

circuit breaker

54
Q

Which atmospheres are all hazardous?

A

toxic, flammable, foul-smelling

OSH (2 decks)

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