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Question 1

Flow Path

Glossary

Answer 1

Movement of HEAT AND SMOKE from higher pressure within fire area to all other lower air pressure areas BOTH INSIDE AND OUTSIDE of a fire bldg.

Question 2

Facts about Flow Paths

Answer 2

• Common for vent opening (windows, doors, ROOF OPENINGS) to act simultaneously as inlet for fresh air AND exhaust vent for products of combustion.
• Bottom = AIR enter; Top = HEAT, SMOKE & FIRE VENT. OUT
• May be several flow paths during a bldg fire
• Every opening in bldg made during fire OP. not only creates a new flow path but also has an impact on existing flow paths.

Question 3

Heat Release Rate (HRR)

Glossary

Answer 3

Rate at which energy (heat) is released by burning of a fuel AND oxygen mixture

Question 4

Hydrocarbon based products burn at _____ the rate as ordinary combustibles and generate _____ times the smoke production.

Glossary, pg 2

Answer 4

Twice;

4 - 10

Question 5

These openings will provide enough air flow that may rapidly expand the fire condition & extension, causing conditions to become untenable in as little as _____ after entry (ventilation) is made into the fire apt.

2.2

Answer 5

1-1/2 minutes

Question 6

Determining factor as to whether door will remain open or closed while search is being conducted

9.10.1

Answer 6

Whether or not engine co. is ready to advance into the fire area/occupancy.

• Has charged line = door left open; LADDER CO. M chock open door.
• No charged line = door closed after search team enters