CWLP Warehouse Safety & Hazardous Materials Handling 5 — Questions and Answers
Question 1: A drum of a Class 8 corrosive liquid is found to have a bulging lid in the warehouse. What is the most likely cause?
- Overfilling of the drum during packaging
- Internal pressure buildup from a chemical reaction or temperature increase (Correct answer)
- Forklift impact damage to the drum seam
- Incorrect label applied at origin
Correct answer: Internal pressure buildup from a chemical reaction or temperature increase
Bulging drum lids typically indicate internal pressure from chemical reactions, fermentation, or thermal expansion of the contents.
Question 2: Which PPE level (A, B, C, or D) provides the highest level of skin, eye, and respiratory protection for warehouse hazmat responders?
- Level D
- Level C
- Level B
- Level A (Correct answer)
Correct answer: Level A
Level A PPE includes a fully encapsulating chemical-resistant suit with SCBA, providing maximum protection against vapors, gases, and skin hazards.
Question 3: Under 29 CFR 1910.1200, employers must make SDS documents available to employees:
- Only during scheduled safety training sessions
- Upon request within 48 hours
- During each work shift when chemicals are in use (Correct answer)
- Annually during the safety audit
Correct answer: During each work shift when chemicals are in use
OSHA requires SDS to be readily accessible to employees during their work shifts in their work areas where hazardous chemicals are used.
Question 4: What is the primary function of a 'spill kit' secondary containment system in a hazmat storage area?
- To absorb and neutralize chemical spills before they spread (Correct answer)
- To alert the fire department automatically
- To allow incompatible chemicals to be mixed safely
- To replace the need for PPE during a spill event
Correct answer: To absorb and neutralize chemical spills before they spread
Spill kits provide materials (absorbents, neutralizers, containment berms) to capture and control chemical spills before they spread or enter drains.
Question 5: A warehouse is required to conduct a Process Hazard Analysis (PHA) under OSHA's PSM standard (29 CFR 1910.119) when it stores which quantity of a highly hazardous chemical?
- Any detectable amount
- Above the Threshold Quantity (TQ) listed in Appendix A (Correct answer)
- Above the LEPC reportable quantity
- More than 55 gallons
Correct answer: Above the Threshold Quantity (TQ) listed in Appendix A
PSM applies when a facility holds a highly hazardous chemical above its specific Threshold Quantity (TQ) defined in 29 CFR 1910.119 Appendix A.
Question 6: In a warehouse, 'housekeeping' as a fire prevention measure primarily refers to:
- Cleaning restrooms and break rooms on a scheduled basis
- Removing combustible clutter, spills, and debris from work areas (Correct answer)
- Washing all storage racking annually
- Painting floor markings for aisle identification
Correct answer: Removing combustible clutter, spills, and debris from work areas
Good housekeeping in fire prevention means eliminating accumulated combustible materials, spills, and debris that could serve as fuel for a fire.
Question 7: When stacking pallets of hazardous materials, which factor is MOST critical in determining the maximum stack height?
- The color coding of the pallets
- The load capacity of the floor and racking, plus container stability (Correct answer)
- The height of the warehouse ceiling only
- Whether a spotter is present during stacking
Correct answer: The load capacity of the floor and racking, plus container stability
Maximum stack height is determined by the floor/rack load rating and the structural integrity of the containers to prevent collapse.
CWLP Warehouse Safety & Hazardous Materials Handling 5
A drum of a Class 8 corrosive liquid is found to have a bulging lid in the warehouse.
What is the most likely cause?