CES Health and Safety Management 3

Question 1

An environmental specialist assessing radiation exposure at a remediation site finds dose rates of 2 mrem/hr. At this rate, how many hours of continuous work would reach OSHA's 5 rem/year occupational limit?

Accepted Answer

Answer

5,000 mrem ÷ 2 mrem/hr = 2,500 hours of continuous exposure to reach the 5 rem/year limit, assuming no other radiation sources.

Question 2

Which OSHA standard specifically governs worker protection during hazardous waste operations and emergency response activities?

Accepted Answer

29 CFR 1910.120

Answer

29 CFR 1910.120 (HAZWOPER) covers hazardous waste operations and emergency response, requiring site characterization, safety plans, medical surveillance, training, and PPE.

Question 3

A Job Safety Analysis (JSA) is most useful for which purpose?

Accepted Answer

Identifying and controlling hazards in specific job tasks before work begins

Answer

A JSA breaks each job into steps, identifies potential hazards in each step, and recommends controls before work starts, making it a proactive hazard prevention tool.

Question 4

Under NFPA 704, a chemical rated '4' in the health (blue) quadrant indicates:

Accepted Answer

Materials that may be lethal even with short exposure

Answer

An NFPA health rating of 4 means short exposure could cause death or major residual injury, and special protective equipment is required.

Question 5

When conducting a chemical exposure assessment, the term 'action level' under most OSHA standards refers to:

Accepted Answer

50% of the permissible exposure limit, triggering additional monitoring or medical surveillance

Answer

OSHA's action level is typically half the PEL; reaching it triggers requirements such as increased air monitoring, medical surveillance, and training, even if the PEL is not exceeded.

(CES) Certified Environmental Specialist Practice Test

(CES) Certified Environmental Specialist Practice Test

CES Health and Safety Management 3