CHST CHST - Construction Health and Safety Technician Hazardous Materials and Chemical Safety Questions and Answers 3

Question 1

Under OSHA's Process Safety Management (PSM) standard (29 CFR 1910.119), what quantity of flammable liquids in a single process triggers PSM coverage?

Accepted Answer

10,000 pounds

Answer

Flammable liquids stored or processed in a single vessel at 10,000 pounds or more above their normal boiling point trigger PSM requirements.

Question 2

What is the correct hierarchy of controls for chemical hazards, listed from most to least preferred?

Accepted Answer

Elimination → Substitution → Engineering → Administrative → PPE

Answer

The hierarchy of controls prioritizes elimination first, followed by substitution, engineering controls, administrative controls, and PPE last.

Question 3

Which section of the SDS contains information about safe storage requirements for a chemical?

Accepted Answer

Section 7

Answer

Section 7 of the standardized 16-section SDS covers handling and storage requirements for the chemical.

Question 4

A construction worker is exposed to a chemical with a vapor pressure of 450 mmHg at 20°C. What does this indicate about the hazard?

Accepted Answer

The chemical evaporates rapidly and can quickly reach hazardous air concentrations

Answer

A high vapor pressure means the chemical evaporates quickly, which can rapidly produce hazardous airborne concentrations in enclosed or poorly ventilated spaces.

Question 5

What OSHA standard requires a written Chemical Hygiene Plan in laboratories that use hazardous chemicals?

Accepted Answer

29 CFR 1910.1450

Answer

OSHA's Laboratory Safety Standard (29 CFR 1910.1450) requires a written Chemical Hygiene Plan for laboratories using hazardous chemicals.

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 3