WHMIS Emergency Procedures and Spill Response 1 — Questions and Answers
Question 1: Which document should be consulted first during a chemical emergency to understand hazard information and response actions?
- The workplace safety policy manual
- The Safety Data Sheet (SDS) (Correct answer)
- The product purchase invoice
- The WHMIS training certificate
Correct answer: The Safety Data Sheet (SDS)
The SDS contains Section 4 (First Aid) and Section 6 (Accidental Release Measures), making it the primary reference during a chemical emergency.
Question 2: Which section of the SDS provides specific instructions for containing and cleaning up a chemical spill?
- Section 4 – First Aid Measures
- Section 6 – Accidental Release Measures (Correct answer)
- Section 8 – Exposure Controls
- Section 13 – Disposal Considerations
Correct answer: Section 6 – Accidental Release Measures
Section 6 of the GHS/WHMIS-aligned SDS is titled Accidental Release Measures and covers spill containment, cleanup procedures, and protective actions.
Question 3: When should workers immediately evacuate an area following a chemical spill?
- Only when instructed by a supervisor
- Only when the spill is larger than 5 liters
- When the spill involves a substance posing immediate danger to life or health (Correct answer)
- Only after calling emergency services first
Correct answer: When the spill involves a substance posing immediate danger to life or health
Evacuation is required whenever a spill creates an Immediately Dangerous to Life or Health (IDLH) condition, regardless of spill size or supervisor instruction.
Question 4: What does the abbreviation IDLH stand for in the context of chemical emergencies?
- Immediately Dangerous to Life or Health (Correct answer)
- Industrial Directive for Laboratory Hazards
- Identification of Dangerous and Life Hazards
- Immediate Detection and Level Hazards
Correct answer: Immediately Dangerous to Life or Health
IDLH stands for Immediately Dangerous to Life or Health, a concentration threshold used to determine when emergency evacuation is necessary.
Question 5: When responding to a spill of a chemical with an unknown hazard level, what is the minimum PPE that should be worn?
- Safety glasses only
- Gloves and a lab coat
- Chemical-resistant gloves, eye protection, and an appropriate respirator (Correct answer)
- Steel-toed boots and a hard hat
Correct answer: Chemical-resistant gloves, eye protection, and an appropriate respirator
Unknown hazards require maximum protection; chemical-resistant gloves, eye protection, and a respirator provide the baseline protection against skin, eye, and inhalation risks.
Question 6: After a chemical spill is cleaned up, how should contaminated absorbent materials and cleanup debris be disposed of?
- In the regular workplace garbage bin
- Left in the spill area for later disposal
- According to the SDS Section 13 – Disposal Considerations (Correct answer)
- By rinsing with water and placing in recycling
Correct answer: According to the SDS Section 13 – Disposal Considerations
SDS Section 13 (Disposal Considerations) specifies safe and regulatory-compliant disposal methods for the substance and any contaminated cleanup materials.
Question 7: What is the correct first priority in any chemical emergency response?
- Protect property and equipment
- Ensure the safety of people in the area (Correct answer)
- Prevent environmental contamination
- Document the incident for reporting
Correct answer: Ensure the safety of people in the area
In any emergency, human safety is the first and highest priority; property and environmental concerns follow only after people are safe.
WHMIS Emergency Procedures and Spill Response 1
Which document should be consulted first during a chemical emergency to understand hazard information and response actions?