CSS Chemical Safety and Hazard Communication 2 — Questions and Answers
Question 1: Threshold Limit Values (TLVs) for occupational chemical exposure are established by which organization?
- OSHA
- NIOSH
- ACGIH (Correct answer)
- EPA
Correct answer: ACGIH
The American Conference of Governmental Industrial Hygienists (ACGIH) publishes TLVs annually as recommended occupational exposure guidelines.
Question 2: A flammable liquid with a flash point below 73°F (23°C) and a boiling point at or below 95°F (35°C) falls under which OSHA classification?
- Flammable liquid Category 1 (Correct answer)
- Flammable liquid Category 2
- Combustible liquid
- Flammable solid Category 1
Correct answer: Flammable liquid Category 1
Under 29 CFR 1910.106 and GHS, flammable liquids with flash points below 73°F and boiling points at or below 95°F are the most hazardous category — Category 1.
Question 3: Which SDS section contains information about engineering controls, administrative controls, and personal protective equipment recommendations?
- Section 6
- Section 7
- Section 8 (Correct answer)
- Section 9
Correct answer: Section 8
SDS Section 8 — Exposure Controls/Personal Protection — covers occupational exposure limits, engineering controls, and recommended PPE.
Question 4: The Immediately Dangerous to Life or Health (IDLH) concentration values are established by which U.S. agency?
- OSHA
- NIOSH (Correct answer)
- EPA
- DOT
Correct answer: NIOSH
NIOSH (National Institute for Occupational Safety and Health) establishes IDLH values, which represent the maximum concentration from which a worker could escape within 30 minutes without irreversible health effects.
Question 5: In chemical safety, a 'secondary container' is best defined as:
- The original container provided by the manufacturer
- Any container that chemicals are transferred into from the original container (Correct answer)
- A dedicated container used for chemical waste disposal
- A pressure-rated container for compressed gas storage
Correct answer: Any container that chemicals are transferred into from the original container
A secondary container is any container other than the original manufacturer container into which a chemical is transferred, and it must be labeled with the chemical identity and applicable hazard warnings.
Question 6: Under OSHA's HazCom Standard, employers must ensure that Safety Data Sheets for hazardous chemicals are:
- Kept in a locked file cabinet accessible only to safety personnel
- Readily accessible to employees during their work shifts (Correct answer)
- Reviewed and certified annually by a licensed industrial hygienist
- Submitted to the local OSHA area office on a quarterly basis
Correct answer: Readily accessible to employees during their work shifts
OSHA requires that SDSs be readily accessible to employees in their work area during each work shift, whether in paper or electronic form.
Question 7: Which GHS signal word is used on labels for chemicals classified in less severe (lower) hazard categories?
- Danger
- Caution
- Warning (Correct answer)
- Notice
Correct answer: Warning
GHS uses only two signal words: 'Danger' for more severe hazards and 'Warning' for less severe hazards — 'Caution' and 'Notice' are not GHS signal words.
CSS Chemical Safety and Hazard Communication 2
Threshold Limit Values (TLVs) for occupational chemical exposure are established by which organization?