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Question
19. The "Ten-Point Scale for Classification of Hazards" was generated by OSHA to clarify legal definitions of "imminent danger," "serious violations," etc.Answer
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Related questions
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a. They might not hear the fire alarm.
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68. Explain the principle of "closed circuit" operation of SCBA units.
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65. Describe the situation that is known to frequently result in a series of multiple fatalities, i.e., victim, then rescuer, then rescuer of the rescuer, etc. What standard (general name only) does OSHA cite in these situations(a) prior to 1993 and (b) after 1993?
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19. The U.S. annual fire death rate is approximately:
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a. pressure demand
b. sulfur dioxide reactor unit
c. chemical oxygen generating unit
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51. Which of the following modes of air line respirator is most dependent upon fit for its effectiveness?
a. continuous demand
b. demand flow
c. pressure demand
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47. The air line respirator derives its name froma. its use by the airlines in emergency losses of cabin pressureb. its ability to purify air in the air linec. its ability to supply atmosphere through an air lined. the fact that not only inhaled air but also exhaled air is transported through an air line
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21. Dust masks are not approved for particulates.a. trueb. false
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18. A gas mask is more effective than a cartridge respirator in an oxygen-deficient atmosphere.a. trueb. false
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6. What alternative is permitted to qualify an air-purifying device to be approved for a toxic substance that has no warning properties?
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80. A room that measures 12'x 15'x 10' has general dilution exhaust ventilation of 1 room change per hour to prevent explosion. Calculate the maximum tolerable level of gasoline vapor leaking into the room atmosphere. State any necessary assumptions. Gasoline has the following characteristics:
FLASH POINT: -40OF
BOILING POINT: 36.1OC
LEL: 1.5%
UEL: 7.8%
VAPOR DENSITY: 2.48
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79. Calculate the amount of general exhaust ventilation (in room changes per hour) needed to control (prevent explosion) a general release of gasoline vapors of 4 cubic feet per minute in a room that measures 12'x 15'x 10'. State any necessary assumptions. Gasoline has the following characteristics:
FLASH POINT: -40OF
BOILING POINT: 36.1OC
LEL: 1.5%
UEL: 7.8%
VAPOR DENSITY: 2.48
Q:
75 If the temperature of a liquid is too low for a fire to be sustained on the top of the liquid, then you know thata. the temperature is below the flash point but above the firepointb. the temperature is below the firepoint but above the flash pointc. the temperature is below both the flash point and the firepointd. the temperature is below the firepointe. b and d abovef. none of the above