Emergency Services Hazardous Materials (HazMat) Response 3

Question 1

Under the Globally Harmonized System (GHS), Safety Data Sheets (SDS) are standardized into how many sections?

Accepted Answer

16

Answer

GHS-compliant SDS documents contain 16 standardized sections covering identification, hazard information, composition, first-aid measures, handling, storage, PPE, and other critical data.

Question 2

What does the term 'IDLH' stand for in the context of HazMat response?

Accepted Answer

Immediately Dangerous to Life or Health

Answer

IDLH (Immediately Dangerous to Life or Health) is a concentration level established by NIOSH above which a 30-minute exposure could cause irreversible health effects or impair escape from a contaminated area.

Question 3

A cryogenic liquid is best described as:

Accepted Answer

A gas that has been liquefied by cooling to very low temperatures (below -130°F / -90°C)

Answer

Cryogenic liquids such as liquid nitrogen, liquid oxygen, and liquid helium are gases stored in liquid form at extremely low temperatures, presenting hazards from extreme cold burns and rapid vaporization.

Question 4

The 'rule of thumb' technique used at HazMat scenes involves:

Accepted Answer

Extending your thumb at arm's length to cover the spill — if your thumb covers it, you are at a safe distance

Answer

The rule of thumb provides a quick field estimate of safe distance: if you can fully cover the incident with your thumb held at arm's length, you are approximately 300 feet or more away, reducing your exposure.

Question 5

Which federal regulation establishes training requirements for workers involved in emergency response operations to hazardous substance releases?

Accepted Answer

OSHA 29 CFR 1910.120 (HAZWOPER)

Answer

OSHA's HAZWOPER standard (29 CFR 1910.120) defines training levels for emergency responders — from First Responder Awareness through Incident Commander — and requires annual refresher training.

Emergency Services Practice Test

Emergency Services Practice Test

Emergency Services Hazardous Materials (HazMat) Response 3