QUESTIONS AND ANSWERS (VERIFIED 100%
CORRECT
Gantt chart --ANSWER- Bar chart illustrating a project schedule. It
uses a work breakdown structure to detail the start and finish dates of terminal
elements.
Given an equal thickness of materials, which substance would be an effective
shield for gamma but not neutron emissions? --ANSWER- Lead
Given equal thickness, what substance is most effective shield for gamma rays? --
ANSWER- Lead
Ground Fault Circuit Interrupter --ANSWER- "· Detects difference
between 2 conductors
Shuts off circuit if there is a difference-as low as 2 ma and as quickly as .02
seconds
Used in bathrooms; kitchens and outdoor circuits
"
Grounding and bonding --ANSWER- "· Grounding: electrically
connecting a piece of equipment to ground (earth)
Bonding: electrically connecting two (or more) pieces of equipment together. This
prevents a static charge buildup between the pieces.
"
Guidelines for cleaning up a minor spill of flammable or combustible material
does not include what? --ANSWER- "You do not have to immediately notify
OSHA of a minor spill.
"
,Having an R number below 2000 implies what about flow characteristics in a
ventilation system? --ANSWER- Laminar flow
Hawthorne study concluded that plant employees would respond to: --CORRECT
ANSWER- Both positive and negative forms of attention
"Hazardous area classification
Class I" --ANSWER- Flammable liquids; vapors and gases are likely
to be present
"Hazardous area classification
Class II" --ANSWER- Combustible dusts are likely to be present
"Hazardous area classification
Class III" --ANSWER- Easily ignitable fibers are likely to be present
Hazards of infrared radiation? --ANSWER- Can damage the unprotected eye or
skin by releasing energy and producing a heating effect. Overexposure of
unprotected eyes to infrared radiation could give rise to cataracts.
Hearing loss from industrial exposure is usually? --ANSWER-
Sensorineural
Heating accomplished by circulating hot water through copper pipes contained in
the concrete floor is what type of heating system? --ANSWER-
Conduction
Heinrich's 1930's famous domino theory of accidents? --ANSWER-
Social, fault, unsafe act, accident, injury
Heinrich's principle in the way safety professionals viewed the cause of certain
mishaps? --ANSWER- Shifted emphasis from conditions to actions.
,Heinrich's ratio of no injury accidents, to minor injuries, to major injuries? --
ANSWER- 300-29-1
Hepatitis-viral --ANSWER- Fecal-oral transmission. Health workers,
particularly pediatrics, oral surgeons.
Histoplasmosis-fungal --ANSWER- Inhalation and ingestion, roof
demolition workers and workers in barns and chicken houses.
Hoisting chain with a minimum breaking strength of 25 tons has been proof tested
to 33,000 pounds. What value would you assign the working load limit? --
ANSWER- 16,500 lbs (elaborate)
Hookworm-parasitic --ANSWER- Penetration of skin (particularly bare feet) by
larvae. Barefoot farmers and ditch diggers, sewer workers, tunnel workers,
recreation (children and adults).
How are employee doses of radiation measured in the workplace? --ANSWER-
"Typically measured in rems. A dose of one Roentgen due to X-ray or gamma
radiation is equivalent to one rem.
Radiation exposures that exceed prescribed regulatory limits must be reported to
OSHA within 24 hours of the incident. A written report of the incident must be
submitted no later than 30 days from the occurrence of the incident.
"
How are future injuries and property damage caused by unsafe employee actions
best reduced? --ANSWER- Systematically reinforcing positive employee actions
and behavior
How can employee exposure to radiation be controlled? --ANSWER-
"1. Employee exposure to radiation can be controlled by means of "shielding" the
source, distance from the source (inverse square law), and reducing the time of
exposure.
, Shielding for alpha rays: paper, aluminum sheets, and even ordinary clothing.
Shielding for beta radiation: lead, aluminum and water
Shielding for gamma rays: concrete, water, lead and iron
"
How long does GFCI typically take to open the circuit and interrupt the current
flow when it detects current leakage to ground in a circuit? --CORRECT
ANSWER- 2-3 hundredths of a second (.02-.03 seconds)
How long must OSHA form 300 be retained in the workplace for? --CORRECT
ANSWER- "5 years
Records of investigations retained 30 years
"
How many cubic feet of air does a normal worker, performing moderate work,
breathe during an 8 hrs per day 40 hour work week? --ANSWER- "1500 cubic
feet
During a moderate workday will breathe about 8.5 cubic meters or 300 cubic of
air.
"
How many years of loss records is a retrospective rating of workers compensation
insurance premiums based on? --ANSWER- Last three
How often does a water fire extinguisher require hydrostatic testing? --CORRECT
ANSWER- Every five years
If a direct current rotary generator has a commutator ring; what does a A.C.
generator have? --ANSWER- Slip rings
If a material with a molecular weight of 90 evaporates from an enclosed process