CMI Health & Safety Standards 4 — Questions and Answers
Question 1: Which respiratory protection is required when using cleaning chemicals with a strong vapor hazard in a confined space?
- Surgical mask
- N95 filtering facepiece
- Supplied-air respirator or SCBA (Correct answer)
- Dust mask
Correct answer: Supplied-air respirator or SCBA
In confined spaces with high vapor concentration, supplied-air respirators or self-contained breathing apparatus (SCBA) are required because air-purifying respirators cannot provide adequate protection.
Question 2: What does the term 'secondary container' mean in chemical labeling requirements?
- A backup container kept in storage
- Any container other than the original manufacturer's container (Correct answer)
- A container used for hazardous waste disposal
- The outer packaging around the primary container
Correct answer: Any container other than the original manufacturer's container
A secondary container is any container into which a chemical is transferred from its original packaging and must be labeled with the product name and hazard warnings.
Question 3: A cleaning manager notices workers mixing bleach and ammonia-based cleaners. The manager should IMMEDIATELY:
- Allow the practice only in well-ventilated areas
- Stop the practice immediately and retrain workers on chemical incompatibility (Correct answer)
- Reduce the concentration of each chemical before mixing
- Document the incident and address it at the next safety meeting
Correct answer: Stop the practice immediately and retrain workers on chemical incompatibility
Mixing bleach (sodium hypochlorite) and ammonia produces toxic chloramine gases that cause serious respiratory damage; the practice must be stopped immediately and workers retrained.
Question 4: Which element must be included on all GHS-compliant chemical labels used in cleaning operations?
- Country of origin
- Manufacturer's phone number only
- Signal word (Danger or Warning) (Correct answer)
- Employee who first opened the container
Correct answer: Signal word (Danger or Warning)
GHS-compliant labels must include product identifier, signal word (Danger or Warning), hazard statements, precautionary statements, supplier information, and pictograms.
Question 5: In healthcare cleaning settings, which precaution level requires full PPE including gown, gloves, mask, and eye protection?
- Standard Precautions
- Contact Precautions (Correct answer)
- Droplet Precautions
- Airborne Precautions
Correct answer: Contact Precautions
Contact Precautions require full barrier PPE including gown, gloves, and eye/face protection when cleaning areas occupied by patients with highly contagious contact-spread infections.
Question 6: A cleaning worker experiences dizziness and headache while using a floor stripper in a poorly ventilated area. The FIRST action should be:
- Continue working and take a pain reliever
- Remove the worker from the area to fresh air immediately (Correct answer)
- Apply cold water to the worker's face
- Complete the task then seek medical attention
Correct answer: Remove the worker from the area to fresh air immediately
Symptoms of chemical vapor overexposure require immediate removal from the exposure area to fresh air as the priority action before any other intervention.
Question 7: Which standard establishes requirements for confined space entry, relevant when cleaning tanks, pits, or utility vaults?
- 29 CFR 1910.119
- 29 CFR 1910.146 (Correct answer)
- 29 CFR 1910.132
- 29 CFR 1910.1200
Correct answer: 29 CFR 1910.146
OSHA 29 CFR 1910.146 governs Permit-Required Confined Spaces, mandating atmospheric testing, ventilation, rescue procedures, and attendants before entry.
