CESCO Industrial Hygiene & Exposure Monitoring

Question 1

Which organization publishes Threshold Limit Values (TLVs) used as guidelines for airborne chemical exposure in the workplace?

Accepted Answer

American Conference of Governmental Industrial Hygienists (ACGIH)

Answer

Occupational Safety and Health Administration (OSHA)

Answer

National Institute for Occupational Safety and Health (NIOSH)

Answer

American Industrial Hygiene Association (AIHA)

Question 2

The hierarchy of controls for occupational hazards lists which method as the MOST effective way to protect workers?

Accepted Answer

Elimination

Answer

Engineering controls

Answer

Administrative controls

Answer

Personal protective equipment (PPE)

Question 3

An 8-hour time-weighted average (TWA) exposure measurement is used to compare against which OSHA exposure limit type?

Accepted Answer

Permissible Exposure Limit (PEL)

Answer

Short-Term Exposure Limit (STEL)

Answer

Ceiling Limit (C)

Answer

Immediately Dangerous to Life or Health (IDLH)

Question 4

Noise-induced hearing loss is a permanent condition. At what OSHA action level (8-hr TWA) must employers implement a Hearing Conservation Program?

Accepted Answer

85 dBA

Answer

90 dBA

Answer

80 dBA

Answer

95 dBA

Question 5

Which sampling method is used to determine personal airborne chemical exposure during a work shift?

Accepted Answer

Personal breathing zone (lapel) sampling

Answer

Area air monitoring at fixed points

Answer

Wipe sampling of surfaces

Answer

Bulk material sampling

Question 6

What does the term 'biomonitoring' mean in the context of industrial hygiene?

Accepted Answer

Measuring chemical concentrations in biological specimens such as blood or urine

Answer

Monitoring plant growth near industrial sites

Answer

Sampling airborne microorganisms in the workplace

Answer

Testing PPE effectiveness in laboratory conditions