CIH CIH Industrial Hygiene Sampling & Monitoring

Question 1

What is the primary purpose of personal air sampling in industrial hygiene?

Accepted Answer

To measure worker exposure to airborne contaminants in the breathing zone

Answer

To assess ambient outdoor air quality

Answer

To evaluate equipment emission rates

Answer

To monitor community pollution levels

Question 2

Which OSHA regulation establishes permissible exposure limits (PELs) for air contaminants in general industry?

Accepted Answer

29 CFR 1910.1000

Answer

29 CFR 1910.119

Answer

29 CFR 1926.55

Answer

29 CFR 1910.134

Question 3

A time-weighted average (TWA) exposure is calculated over what standard period for OSHA compliance?

Accepted Answer

8 hours

Answer

4 hours

Answer

6 hours

Answer

10 hours

Question 4

Which sampling method uses a sorbent tube to collect organic vapor samples for laboratory analysis?

Accepted Answer

Charcoal tube sampling

Answer

Impinger sampling

Answer

Filter cassette sampling

Answer

Real-time photoionization

Question 5

What is the recommended NIOSH analytical method reference for determining which sampling and analytical approach to use?

Accepted Answer

NIOSH Manual of Analytical Methods (NMAM)

Answer

ACGIH TLV booklet

Answer

EPA Methods compendium

Answer

OSHA Technical Manual

Question 6

When conducting area air sampling, where should the sampler ideally be placed?

Accepted Answer

At a fixed location representative of worker exposure zones

Answer

Near the building HVAC return

Answer

Outside the facility for background reference

Answer

At the highest elevation in the work area