ASP ASP Hazardous Materials and Chemical Safety 2

Question 1

What does the acronym TLV-TWA stand for in occupational exposure guidelines?

Accepted Answer

Threshold Limit Value - Time-Weighted Average

Answer

Toxic Level Value - Time-Weighted Average

Answer

Total Limit Value - Time-Weighted Average

Answer

Threshold Level Value - Total Weighted Amount

Question 2

Using OSHA's 5 dB exchange rate, at what noise level is the maximum permissible exposure time reduced to 1 hour?

Accepted Answer

105 dBA

Answer

95 dBA

Answer

100 dBA

Answer

110 dBA

Question 3

What is OSHA's permissible exposure limit for respirable crystalline silica (as quartz) in general industry?

Accepted Answer

50 µg/m³ as an 8-hour TWA

Answer

100 µg/m³ as an 8-hour TWA

Answer

250 µg/m³ as an 8-hour TWA

Answer

10 µg/m³ as an 8-hour TWA

Question 4

A Short-Term Exposure Limit (STEL) is defined as a time-weighted average concentration not to be exceeded over what maximum duration?

Accepted Answer

15 minutes

Answer

30 minutes

Answer

1 hour

Answer

2 hours

Question 5

What is OSHA's permissible exposure limit (PEL) for carbon monoxide (CO) in general industry?

Accepted Answer

50 ppm TWA

Answer

25 ppm TWA

Answer

100 ppm TWA

Answer

200 ppm TWA

Question 6

Which organization publishes Threshold Limit Values (TLVs) as occupational exposure guidelines in the US?

Accepted Answer

ACGIH

Answer

OSHA

Answer

NIOSH

Answer

EPA