NFPA 211 Exam Questions Correct Verified Solutions New Update (A Pas
Study online at https://quizlet.com/_hrrunj
1. 3 stages of wood combustion: Drying, pyrolysis, charcoal
2. Combustion: Rapid oxidation of a substance, accompanied by the production of heat and light.
3. Creosote: by-product of burning wood. Combustable deposit that originates as condensed wood smoke, tar,
vapors and other organic compounds.
4. Soot: soft black and brown
5. Glazed Creosote: combustible and hard to remove
6. Pyrolysis changes to creosote: changes the the tar-like appearance to shiny curly flakes or bubbly
deposits
7. 3 Factors that affect creosote build-up: Smoke density, flue gas temp,residence time
8. smoke density: amount of unburned hydrocarbon in the flue gas
9. Flue gas temperature: The temp of flue gases moving through the flue
10. Residence time: the amount of time smoke remains in venting system
11. large fuel loads can affect creosote buildup:
12. what is a good moisture content of wood?: 15-25%
13. catalytic combustors: the smoky exhaust is passed through a coated ceramic honeycomb inside the stove
where the smoke gases and particles ignite and burn.
14. definition of chimney fire: burning of soot and creosote accumulations inside a connector or chimney
15. indications of chimney fires: 1. loud roaring noise
2. sparks and flames coming from the chimney
3.red hot connector pipe
4. vibrating connector and/or stove
5. flames visible in tiny cracks in connector
6. smoke an odors noticeable in adjoining rooms or attic
16. minimum level of creosote build up before it needs sweeping: 1/8" inch build up
17. BTU's for pellets and pellet stove: 8200 BTU's
18. corbeling: masonry projecting up and out from wall of chimn
19. wythe: brick that seperates flues in chimn
20. When a round flue is used for the lining of a fireplace chimney the proper
fireplace opening to flue size ratio should be?: 12:1
21. unlined smoke chamber walls need what thickness?: 8"
22. if the a fireplace opening is 6 square feet the hearth extension should be a
minimum of ?: 20"
1/2
Study online at https://quizlet.com/_hrrunj
1. 3 stages of wood combustion: Drying, pyrolysis, charcoal
2. Combustion: Rapid oxidation of a substance, accompanied by the production of heat and light.
3. Creosote: by-product of burning wood. Combustable deposit that originates as condensed wood smoke, tar,
vapors and other organic compounds.
4. Soot: soft black and brown
5. Glazed Creosote: combustible and hard to remove
6. Pyrolysis changes to creosote: changes the the tar-like appearance to shiny curly flakes or bubbly
deposits
7. 3 Factors that affect creosote build-up: Smoke density, flue gas temp,residence time
8. smoke density: amount of unburned hydrocarbon in the flue gas
9. Flue gas temperature: The temp of flue gases moving through the flue
10. Residence time: the amount of time smoke remains in venting system
11. large fuel loads can affect creosote buildup:
12. what is a good moisture content of wood?: 15-25%
13. catalytic combustors: the smoky exhaust is passed through a coated ceramic honeycomb inside the stove
where the smoke gases and particles ignite and burn.
14. definition of chimney fire: burning of soot and creosote accumulations inside a connector or chimney
15. indications of chimney fires: 1. loud roaring noise
2. sparks and flames coming from the chimney
3.red hot connector pipe
4. vibrating connector and/or stove
5. flames visible in tiny cracks in connector
6. smoke an odors noticeable in adjoining rooms or attic
16. minimum level of creosote build up before it needs sweeping: 1/8" inch build up
17. BTU's for pellets and pellet stove: 8200 BTU's
18. corbeling: masonry projecting up and out from wall of chimn
19. wythe: brick that seperates flues in chimn
20. When a round flue is used for the lining of a fireplace chimney the proper
fireplace opening to flue size ratio should be?: 12:1
21. unlined smoke chamber walls need what thickness?: 8"
22. if the a fireplace opening is 6 square feet the hearth extension should be a
minimum of ?: 20"
1/2
