Presbycusis
Hearing loss due to old age
Presbyopia
impaired vision as a result of aging, difficulty focusing
Byssinosis
Disease from inhaling cotton fibers. Also called "brown lung disease" or "Monday fever". Reaction against cotton, linen, hemp products in textile/fabric industry.
...
four 4 types of human errors discussed in human factors engineering
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ASP Exam| 685 Questions
with 100% Correct Answers
Presbycusis Correct Answer: Hearing loss due to old age
Presbyopia Correct Answer: impaired vision as a result of aging, difficulty
focusing
Byssinosis Correct Answer: Disease from inhaling cotton fibers. Also called
"brown lung disease" or "Monday fever". Reaction against cotton, linen, hemp
products in textile/fabric industry.
Four (4) types of human errors discussed in Human Factors Engineering. Correct
Answer: "Errors C.O.S.T. time and money"
1. Commission: doing something wrong
2. Omission: leaving something out
3. Sequence: doing something in the wrong order
4. Timing: doing something out of allotted time, too fast or too slow
Does the employers have to post OSHA citations? Correct Answer: Yes, for 3
days or until corrected.
Audiogram Correct Answer: Written record of hearing threshold at specified
frequencies.
Audiometer Correct Answer: a device that can present tones of different
frequencies, from low in pitch to high in pitch, at different volumes from soft to
loud
What dB at 3000 hz during an audiogram means the person can't hear the tone?
Correct Answer: 30 dB
Factors that affect absorption of noise Correct Answer: angle to noise source,
frequency of noise, density, condition/cleanliness, type of mounting, shape of
surface
,To improve noise absorption through engineering controls, what properties do you
want? Correct Answer: Good porosity, thickness, air gaps
Emissivity Correct Answer: Ratio of radiation emitted by a surface to the radiation
emitted by a black body at the same temperature. A black body is 1.0 (highest),
down to 0 (bright, reflective surfaces).
Emissivity of bright metal surfaces Correct Answer: Low - less than 0.1 (bright
metal is a good reflector), meaning it is good for reducing radiant heat.
Emissivity of unpolished surfaces Correct Answer: Close to 1.0, which is high,
meaning not great for reducing radiant heat.
Carpal tunnel affects what nerve and what parts of the hand? Correct Answer:
Median nerve. Thumb, pointer and ring fingers, NOT the pinky. Inflammation and
pain in the wrist. Thenar wasting is sign of advanced disease.
Metal Fume Fever Correct Answer: Acute condition from brief high exposure to
metal fumes (e.g., zinc, magnesium, their oxides). Symptoms appear from 4 to 12
hours after exposure -- fever, shaking chills (flu-like). Recovery is quick. Workers
can develop immunity, but a break and re-exposure normally makes it worse.
What do altitude changes affect (and not affect) regarding fans? Correct Answer:
Horsepower needed (air has less mass), static pressure (not as much needed). But
the CFM (volumetric rate) is NOT changed by altitude, and neither is RPM of the
fan.
SCBA & airline respirator rules Correct Answer: Must be Grade D or higher; can
use high pressure air; oil pumped with filtering is acceptable. Medical oxygen is
NOT allowed - dangerous because of increased flammability.
Abduction, adduction, flexion, extension Correct Answer: Adbuction: increasing
angle of arm to body, AWAY.
Adduction: decreasing angle of arm to body, TOWARD.
Extension: increasing angle of forearm to bicep.
Flexion: decreasing angle of forearm to bicep.
Grade D breathing air Correct Answer: 19.5%-23.5% oxygen
<5 mg/m3 of oil
<10 ppm CO
,<1000 ppm CO2.
TLV, PEL, IDLH for carbon monoxide Correct Answer: TLV of 50 ppm
(ACGIH); STEL of 400.
IDLH of 1500 ppm (NIOSH)
PEL of 35-50 (OSHA); ceiling is 200, instantaneous is 1500.
Carbon Monoxide (CO) Correct Answer: Air pollution that is a product of
combustion of fossil fuels. Flammable, colorless, odorless, poisonous. Chemical
asphyxiate. Does NOT harm red blood cells, but reduces their oxygen-carrying
capacity.
Teratogen Correct Answer: an agent or factor that causes malformation of an
embryo or fetus. Does not propagate across generational lines.
Next best option to electric forklifts for emissions. Correct Answer: Convert the
forklift to LP gas.
Double insulation does not protect against shock in what circumstance? Correct
Answer: Water, wet locations
(Data terms) Random, stratified, systematic, cluster Correct Answer: Random:
everyone has an equal change. Stratified: separated by layers. Systematic:
patterned response. Cluster: confined to a location.
pH less than 7 Correct Answer: acid
pH greater than 7 Correct Answer: base
activated carbon Correct Answer: A form of specially treated, porous carbon, used
to absorb various odors and vapors. Has a non-polar surface.
Axial flow fans Correct Answer: High volume and low pressure drop; general &
dilution ventilation; NOT good for LEV; NOT used to move air through a duct;
sometimes used for comfort.
Centrifugal fans Correct Answer: Fan axis is perpendicular to flow -- spits air out
90 degrees. Low noise. Suited to high pressures. Low to moderate static pressures;
used in heating & air conditioning; workhorse of industrial hygiene; sometimes
called squirrel cages; good for lint, wood chips & dust.
, Forward blades in centrifugal fan Correct Answer: Blades are curved in the
direction of rotation. Used whenever a large air volume has to be moved in a tight
space. Requires more power, which can overload motors.
Backward blades in centrifugal fan Correct Answer: Blades are curved in the
opposite direction of rotation. More efficient than forward blades.
Paddle wheel or long-shaving wheel Correct Answer: Used with medium tip speed
for buffing exhaust, woodworking exhaust or when heavy dust must pass through
the fan.
Max travel distance of fire extinguisher in light hazard occupancies Correct
Answer: 75 ft. Includes places like churches, clubs, education centers, kennels,
museums, homes.
Inspection items for self-closing doors Correct Answer: 1) Lubrication on guides
& bearings
2) Binders are not bent, thus obstructing door
3) Chains/wire ropes have not stretched.
4) Fusible links are NOT painted.
Main cause of sprinkler system failure Correct Answer: 35% of the time: closed
water-supply valves.
Main cause of leaking sprinkler heads Correct Answer: Overheating from being
too close to heat-generating processes.
How often should sound level meters be calibrated? Correct Answer: Before &
after each survey
Safest method to determine electrical current Correct Answer: Split-core ammeter
Treating exposure to liquid oxygen Correct Answer: Warm water. Never rub or
use dry heat. Frozen tissue is painless but will be swollen & painful when thawed.
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