CHST CHST - Construction Health and Safety Technician Hazardous Materials and Chemical Safety Questions and Answers 4

Question 1

Under OSHA's Hazard Communication Standard (HazCom 2012), how many sections are required in a Safety Data Sheet (SDS)?

Accepted Answer

16 sections

Answer

OSHA's HazCom 2012, aligned with GHS, mandates a standardized 16-section format for all Safety Data Sheets.

Question 2

A construction worker is exposed to isocyanate-containing spray foam. Which type of respirator provides the MINIMUM required protection during application?

Accepted Answer

A supplied-air respirator (SAR) in positive-pressure mode

Answer

Isocyanates are highly sensitizing; OSHA and NIOSH recommend supplied-air respirators in positive-pressure mode because organic vapor cartridges may not provide adequate protection at low concentrations.

Question 3

Which NFPA 704 diamond section color indicates health hazard information?

Accepted Answer

Blue (left)

Answer

The NFPA 704 diamond uses blue on the left quadrant to indicate health hazards, rated 0–4.

Question 4

A drum labeled with a UN/DOT hazard class 3 placard contains which category of material?

Accepted Answer

Flammable liquids

Answer

DOT Hazard Class 3 designates flammable liquids, including gasoline, acetone, and similar solvents commonly found on construction sites.

Question 5

During demolition of a pre-1980 building, workers encounter pipe insulation suspected to contain asbestos. What is the FIRST action the CHST should take?

Accepted Answer

Stop work in the affected area and arrange for sampling by a licensed asbestos inspector

Answer

OSHA 29 CFR 1926.1101 requires that suspect asbestos-containing materials be assessed by a competent person before disturbance; work must stop until sampling confirms or rules out ACM.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST CHST - Construction Health and Safety Technician Hazardous Materials and Chemical Safety Questions and Answers 4