ASP Exam A+

ASP Exam A+ Presbycusis Presbyopia Byssinosis Hearing loss due to old age impaired vision as a result of aging, difficulty focusing 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. 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? "Errors C.O.S.T. time and Yes, for 3 days or until corrected. Audiogram Written record of hearing threshold at specified frequencies. Audiometer 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? Factors that affect absorption of noise 30 dB 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? porosity, thickness, air gaps Emissivity Good 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 is good for reducing radiant heat. Emissivity of unpolished surfaces radiant heat. Low - less than 0.1 (bright metal is a good reflector), meaning it Close to 1.0, which is high, meaning not great for reducing Carpal tunnel affects what nerve and what parts of the hand? 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 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? 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 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 f lammability. Abduction, adduction, flexion, extension 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 5 mg/m3 of oil 10 ppm CO 1000 ppm CO2. 19.5%-23.5% oxygen TLV, PEL, IDLH for carbon monoxide 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) 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 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. Convert the forklift to LP gas. Double insulation does not protect against shock in what circumstance? (Data terms) Random, stratified, systematic, cluster Water, wet locations Random: everyone has an equal change. Stratified: separated by layers. Systematic: patterned response. Cluster: confined to a location. pH less than 7 acid pH greater than 7 activated carbon base A form of specially treated, porous carbon, used to absorb various od