PRELIM Flashcards
1
Q
A cause of fire death where there is bronchial and pulmonary swelling.
A
Edema
2
Q
In the triangle of fire, it is the reducing agent
A
Fuel
3
Q
It is the lowest temperature at w/c fuel gives off flammable vapors
A
Flash point
4
Q
First in the principles of fire prevention is
A
Prevent the outbreak of fire
5
Q
A substance is more dangerous when it has a __ flashpoint
A
lower
6
Q
A cause of fire death due to insufficient oxygen
A
Asphyxia
7
Q
Air is normally __% oxygen
A
21%
8
Q
The hot work permit is a/an __ control
A
administrative
9
Q
In the triangle of fire, it is the oxidizing agent
A
Oxygen
10
Q
Fires with magnesium as fuels is a class __ fire
A
Class D
11
Q
A cause of fire death where the lungs sell with blood congestion
A
Hyperemia
12
Q
A transfer of heat from molecule to molecule
A
Conduction
13
Q
Fires with motors is a class __ fire
A
Class C
14
Q
When oxygen content of air drops below __%
A
16 %
15
Q
A material having a flashpoint at or above 37.8C is known as a __ material
A
Combustible material
16
Q
Fires with wood as fuel is a class __fire
A
Class A
17
Q
A cause of fire death from effects of heat
A
hyperthermia
18
Q
Air is normally __% nitrogen
A
78%
19
Q
A material having a flashpoint below 100F (37.8C) is a __ material
A
Flammable material
20
Q
Fire is
A
” Rapid oxidation with the evolution of light and heat”
Fire Is a chemical reaction between a
flammable or combustible material and oxygen.
Is the chemical union of heat, fuel and oxygen produced in the proper proportions
21
Q
Fire in the kitchen is a class __ fire
A
Class K
22
Q
When using a fire extinguisher, start squeezing the trigger __ feet
A
6-8 feet
23
Q
A room, building or hall should have at least __ safety exits
A
Atleast 2
24
Q
The method of extinguishment of fire where oxygen is limited/removed.
A
Hyperthermia ?
Smothering
25
Fires with paints of grease as a fuel is a class __ fire
Class B
26
Industrial Hygiene is a science that deals with the ___, of workplace conditions that may cause sickness, impaired health and well-being,
recognition, evaluation, anticipation and control
27
"If two people with no hearing impairment have to shout to be heard in a distance of less than __ from each other, the sound level is potentially hazardous"
Arm length
28
Which is not included in the classification of hazards for industrial hygiene?
- Mechanical
Classification of Hazards: Chemical Hazards , Physical Hazards, Biological Hazards, Ergonomic Hazards
29
What type of hazard is NOISE?
Physical Hazard
30
Which is not a recognized type of noise in Industrial Hygiene?
Compact
31
A source of natural light
daylight/ moonlight
32
Ergonomics is about fitting the worker to the task or job
“Fit the task to the man”
33
Chemicals have improved our lives are found everywhere around us, but they become hazardous when they become
airborne
34
The largest way for chemicals to enter the human body is through
skin contact
35
A device for work environment monitoring that measures illumination levels
Lux Meter
36
The following are chemical hazards except
Radiation
37
The following are ionizing radiation except
ultraviolet rays
38
which is an extreme pressure?
12.13 kPa
39
Which is an ionizing radiations
x-rays
40
Which is not a whole body vibration source?
chainsaw
body vibration sources – weaving
looms, harvester-thresher, tractors, etc.
41
Biological hazard that went global in 2020
virus
42
Ergonomic comes from two words which mean "work " and laws. these are Ergo and __ is about fitting the worker to the task or job
nomos
43
Chemical labels contain the following information except
Latin Scientific name
● Trade name of the substance
● Identity and concentration
● Danger markings; safety precautions
● Manner of destroying the package
● Risks associated with the use of the chemical
● Name of manufacturer & address
44
Equipment used to analyze samples of heavy metals
Atomic Absorption Spectrophotometer
45
Recommended illumination levels for corridors and passageways is a minimum light level of __ lux
50 lux
46
Safety is a state if freedom from danger of risk or injury to
human, property and environment
47
___ is a direct cost of accidents
compensation
48
Is not a hidden cost of accidents
medical expenses
49
Regarding safety and engineering, process design and control is usually a matter.
Chemical Engineering
50
Which branch of engineering is concerned with reliability of power?
Electrical Engineering
51
The most versatile form of enegery
Electrical
52
Can cause an electrical accident
overloading
53
which is a secondary effect of electrical hazards
falls
54
which is the best conductor
silver
55
which is not a factor affecting electric shock
quality/brand of device
56
at __ma of current (minimum amount) through the body, ventricular fibrillation is certain and thus fatal
100 mA
57
The safe "let-go" current which may cause a secondary accident is __ to __mA
5 to 16
58
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
fuse
59
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
look out device
60
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
61
in case of an electrical accident, on must
immediately turn off the electrical power sourfce
62
the Occupational and Safety & Health Standards for Machine Guarding
RULE 1200
63
Whose responsibility is it not to operate equipment unless guards are in place
employees
64
When a worker falls and hands by the fall arrest system, rescue should be done within __ to __ minutes
5 to 10 minutes
65
Poses the greatest risk in excavating and trenching works
cave-ins
66
When excavating or trenching, keep surcharge loads at least ___ feet away from the edges
2 ft
67
Process of permanently joining two or more materials together, usually metals, by heat or pressure or both
Brazing
68
A job which is not considered as a common hot work
drilling
69
Atmospheric oxygen is safe when it is between __ to __ % in the work space
19.5 to 23.5 %
70
When the level of oxygen falls below ___% judgement and coordination suffers
16%
71
When the level of oxygen falls below __% difficulty of breathing and drowsiness occurs.
16%
72
When the level of oxygen falls below __%, a person becomes unconscious
12 %
73
When the level of oxygen falls below ___%, death occurs.
14%
74
The level of oxygen can fall if the confined space contains
Methane which absorbs oxygen
75
The level of oxygen can fall if the confined space contains
Carbon dioxide which absorbs oxygen
76
Which atmospheres are all hazardous?
77
Toxic substance such as __, can cut off breathing
Carbon Monoxide
78
Toxic substance (smells like rotten eggs) such as __, can cut off breathing
Hydrogen sulfide
79
When testing for atmospheric hazards, the order of testing must be
oxygen, combustible gasses &vapors, toxic gasses & vapors
80
A PRCS job location cannot be entered without a permit
true
81
Which hazardous gas is lighter than air?
Methane
82
Which hazardous gas is heavier than air?
Hydrogen Sulfide
83
The use of special tools and lighting or extra low voltage equipment require that such should not have a voltage exceeding ___ (ac) volts
50 V
84
The best way of hazard control for confined spaces is
susbtitution
85
the use of special tools and lighting or extra low voltage equipment require that such should ___(dc) volts
120 V
86
A confined space
has a limited or restricted means of entry/exit but is large enough for a worker to enter and perform his job
87
____ are primary protective devices intended to fit the fac immediately surrounding the eyes
goggles
88
Mechanical Respirators that screen out dust and some form of mist
Filtration respirators
89
Hearing protectors placed inside the ear to block out noise
earplugs
90
Hard hats proof tested at 20,000 volts are class
Class E
91
___ are primary protective devices intended to shield the wearer's eyes from flying and striking objects, glare and injurious radiation hazards
goggles
92
Class __ helmets do no provide protection against contract with electrical hazards
Class C
93
"As a general rule, face shields should be worn over suitable basic eye protection"
true
93
A device composed of a headband with two cushioned ear cups that form a seal around the outer ear, covering it completely and blocking out the noise
earmuffs
94
Exposure to noise at 85-90 dB. Must not be more than __ hours
8 hrs
95
In hazards and risk management, this is the 3rd step
Implement hazard controls
96
In hazards and risk management, this is the 1st step
Identify Hazards
97
Which is the responsibility of the worker/ employee?
report hazardous conditions to the supervisor
98
Safety and Health is ___ responsibility
everyone's
99
There are three major subsystems that must be dealt with in building effective safety system: Which is not among them
Physchological
100
Route of entry of hazards to the body through swallowing
ingestion
101
This property is important when considering the containment, disposal, and treatment alternatives of a certain substance or product. It is a chemical property that determines whether the substance or chemical will float on or sink into water
specific gravity
102
What is the lowest temperature at which the liquid gives off ignitable vapor with oxygen in air and produce flame when an ignition source is present?
flash point
103
Acetone has a flashpoint of -20degrees C. Therefore, it is a combustible liquid
False
104
The range of concentrations of gases in the air that will support the explosive process bounded by measurable limits called upper explosive limits (UEL) and lower explosive limits (LEL)
Flammability range
105
The basic principle to extinguish Fire is to use a Fire Extinguisher
False
106
Generally defined as energy that has the potential to cause injury or even death
Hazardous Energy
107
A liquid that has a flashpoint below 37.8C
Flammable Liquid
108
What class of fire does Acetone fire belong to?
Class B
109
Hazardous energy control procedures for each type of machine/equipment
Equipment -specific Lockout/Tagout Procedure
110
What class of fire are Metal Fires?
Class D
111
Cooking oil fires are what type of fire?
Class K
112
The temperature at which the liquid changes into vapor
Boiling point
113
The standard approach for chemical labeling and hazards classification
Globally Harmonized System
114
It is important that Lockout/Tagout must be done by
Authorized employee
115
A procedure to control hazardous energies
Lockout/Tagout
116
The reference material that identifies chemical characteristics and hazards
MSDS
117
In LOTO removal process, it is important to:
Remove the LOTO devices then re-energize the equipment
