CHST CHST - Construction Health and Safety Technician Hazardous Materials and Chemical Safety Questions and Answers 1 — Questions and Answers
Question 1: Under OSHA's Hazard Communication Standard (HazCom 2012), how many sections are required in a Safety Data Sheet (SDS)?
- 8 sections
- 12 sections
- 16 sections (Correct answer)
- 20 sections
Correct answer: 16 sections
OSHA's HazCom 2012 aligned with GHS requires SDSs to have exactly 16 standardized sections.
Question 2: Which GHS pictogram indicates an acute toxicity hazard?
- Flame symbol
- Skull and crossbones (Correct answer)
- Exclamation mark
- Health hazard (silhouette with asterisk)
Correct answer: Skull and crossbones
The skull and crossbones GHS pictogram indicates acute toxicity (fatal or toxic if ingested, inhaled, or in contact with skin).
Question 3: Under OSHA HazCom, what is a 'Secondary Container' label requirement when transferring chemicals to smaller containers?
- The secondary container needs the full SDS attached
- It must be labeled with product identifier and hazard information
- No label is needed if the worker uses the container during the same shift (Correct answer)
- Only the chemical name is required on the secondary container
Correct answer: No label is needed if the worker uses the container during the same shift
Workers may transfer chemicals to secondary containers without a label only if the container is for their immediate use during the same work shift.
Question 4: What is the permissible exposure limit (PEL) for airborne silica (respirable crystalline) as an 8-hour TWA under OSHA's silica standard for construction?
- 250 µg/m³
- 100 µg/m³
- 50 µg/m³ (Correct answer)
- 25 µg/m³
Correct answer: 50 µg/m³
OSHA's construction silica standard (29 CFR 1926.1153) sets the PEL at 50 µg/m³ as an 8-hour TWA.
Question 5: Which OSHA standard governs the handling and disposal of lead on construction sites?
- 29 CFR 1926.62 (Correct answer)
- 29 CFR 1910.1025
- 29 CFR 1926.1101
- 29 CFR 1910.1200
Correct answer: 29 CFR 1926.62
OSHA 29 CFR 1926.62 is the construction-specific lead standard governing exposure, PPE, and medical surveillance.
Question 6: What is the action level for lead exposure in construction that triggers medical surveillance requirements?
- 10 µg/m³ as an 8-hr TWA
- 30 µg/m³ as an 8-hr TWA (Correct answer)
- 50 µg/m³ as an 8-hr TWA
- 100 µg/m³ as an 8-hr TWA
Correct answer: 30 µg/m³ as an 8-hr TWA
An action level of 30 µg/m³ as an 8-hour TWA triggers medical surveillance requirements under OSHA's construction lead standard.
CHST CHST - Construction Health and Safety Technician Hazardous Materials and Chemical Safety Questions and Answers 1
Under OSHA's Hazard Communication Standard (HazCom 2012), how many sections are required in a Safety Data Sheet (SDS)?