CCS Safety Procedures & Regulations 3 — Questions and Answers
Question 1: NFPA 211 requires a minimum clearance of how many inches between a factory-built fireplace chimney and combustible framing?
- 1 inch (Correct answer)
- 2 inches
- 3 inches
- No clearance required if listed
Correct answer: 1 inch
NFPA 211 and most factory-built chimney listings require a minimum 2-inch clearance, but listing instructions supersede — always check the listing; however the NFPA 211 baseline is 2 inches with some systems listing at 1 inch — the standard baseline is 2 inches.
Question 2: A sweep notices the liner of a gas appliance chimney is undersized for the connected appliance BTU rating. This is classified under CSIA inspection protocol as:
- A cosmetic observation requiring no action
- A Level 1 minor finding
- A code deficiency requiring correction before continued use (Correct answer)
- Normal variation acceptable within tolerance
Correct answer: A code deficiency requiring correction before continued use
An undersized liner creates incomplete draft, CO spillage risk, and moisture problems — it is a code deficiency requiring correction.
Question 3: When is a Level 2 chimney inspection required according to NFPA 211?
- Every calendar year regardless of use
- Upon the sale or transfer of a property (Correct answer)
- Only when visible damage is observed from the ground
- Whenever a new appliance is purchased
Correct answer: Upon the sale or transfer of a property
NFPA 211 mandates a Level 2 inspection upon the sale or transfer of a property to ensure the new owner receives a full system evaluation.
Question 4: Which respiratory hazard is most commonly associated with cleaning older masonry chimneys that served coal-burning appliances?
- Mold spores
- Crystalline silica dust (Correct answer)
- Formaldehyde vapors
- Radon gas
Correct answer: Crystalline silica dust
Old coal soot and disturbed mortar joints release crystalline silica, which causes silicosis with repeated inhalation exposure.
Question 5: A chimney professional preparing to work in a confined space such as a basement boiler room must comply with OSHA's permit-required confined space standard when:
- The space is smaller than 4 feet wide
- The space has limited means of entry or exit and contains a hazardous atmosphere potential (Correct answer)
- Any combustion appliance is present
- The ceiling height is below 6 feet
Correct answer: The space has limited means of entry or exit and contains a hazardous atmosphere potential
OSHA 29 CFR 1910.146 defines permit-required confined spaces by limited access AND the potential for hazardous atmospheres, not by size alone.
Question 6: Roof jacks and planks used by chimney sweeps must be capable of supporting at minimum how many pounds per linear foot?
- 25 lbs/ft
- 50 lbs/ft (Correct answer)
- 75 lbs/ft
- 100 lbs/ft
Correct answer: 50 lbs/ft
OSHA requires scaffold planks and roof brackets to support at least 50 lbs per linear foot of working load.
Question 7: After a chimney fire has occurred in a customer's home, which inspection level is the minimum required before the fireplace system can be returned to service?
- Level 1
- Level 2 (Correct answer)
- Level 3
- A visual spot check is sufficient
Correct answer: Level 2
NFPA 211 specifies that a Level 2 inspection must be performed after a known or suspected chimney fire to assess structural damage.
CCS Safety Procedures & Regulations 3
NFPA 211 requires a minimum clearance of how many inches between a factory-built fireplace chimney and combustible framing?