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33023* SMOKE SENSING FIRE DETECTORS
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33023 is a Level II General Non-Core Work element.
The asterisk (*) following 33023 means crossover credit exists in selected other fields/subfields for this work element. Read information on crossover work elements in the Program Detail Manual on pages 4 and 5. You won't receive the crossover credit until you test in another qualified sub-field for the first time.
33023 DESCRIPTION
Understand the basic principles of operation of ionization, aspiration, projected beam, photoelectric obscuration, photoelectric scattering, and cloud chamber smoke sensing fire detectors, and the effect of stratification on response time. Lay out a system of smoke sensing fire detectors of line type, spot type, duct type, and sampling type, including smoke detectors for use as area smoke detectors, air duct smoke detectors, and smoke detectors for door release service. (NFPA 72, 80, 90A, Fire Alarm Signaling Systems , Fire Protection Equipment Directory, NEMA Guide for Proper Use of System Smoke Detectors, and NEMA Guide for Proper Use of Smoke Detectors in Duct Applications)
33023 REFERENCES:
NFPA 72
NFPA 80
NFPA 90A
Fire Alarm Signaling Systems
UL Fire Protection Equipment Directory
NEMA Guide for Proper Use of System Smoke Detectors
NEMA Guide for Proper Use of Smoke Detectors in Duct Applications
NOTE: System Sensor offers free application guides, which include content similar to the two NEMA references.
NICET TEST PREPARATION HANDBOOKS are now available for this element and for every element in level 1 through level 4.
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