1 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 2 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 pa rts 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 altitud e 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 3 <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 Correc t 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 ai r 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. 4 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 throu gh 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) Lubricati on 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 Particle sizes Correct Answer: Large: silica Small: zinc 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.
