CLASS K STUDY GUIDE NFPA 96/17A
Branch-Duct---ans-✔✔the-duct-work-that-contains-the-exhaust-air-from-a-single-hood-or-
hazard-area.
Common-Duct---ans-✔✔the-duct-work-containing-the-exhaust-air-from-two-or-more-
branch-ducts.
4.3.1.1-Discharge-nozzles-shall-be-provided-with-an-________-or-a-_________-located-
immediately-up-stream-of-the-nozzle.---ans-✔✔"Internal-Strainer"-"separate-listed-
strainer"
4.3.1.2-Discharge-nozzles-shall-be-of-______,-_______,-or-other-corrosion-resistant-
materials-or-be-protected-inside-and-out-against-corrosion.---ans-✔✔"brass",-"stainless-
steel"
4.3.1.4-Discharge-nozzles-shall-be-__________-__________-for-identification.---ans-
✔✔"permanently-marked"
4.3.1.5-All-discharge-nozzles-shall-be-provided-with-______-or-_______-to-prevent-the-
entrance-of-grease-vapors,-moisture,-environmental-contaminants,-or-other-foreign-
materials-into-the-piping.---ans-✔✔"caps"-"or-other-suitable-devices"
4.4.3.1-Manual-actuators-shall-not-require-a-force-of-more-than-____.---ans-✔✔"40lbs"
4.4.3.2-Manual-actuators-shall-not-require-a-movement-of-more-than-_______-to-secure-
operation.---ans-✔✔"14inches"
4.4.3.3-All-manual-actuators-shall-be-provided-with-_______.---ans-✔✔"operating-
instructions"
4.4.4.1-On-actuation-of-any-cooking-equipment-fire-extinguishing-system,-all-sources-of-
fuel-and-electric-power-that-produce-heat-to-all-equipment-protected-by-the-system-shall-
_______---ans-✔✔"be-shut-down"
4.4.4.2-Gas-appliances-not-requiring-protection-but-located-under-the-same-ventilation-
equipment-shall-_______---ans-✔✔"also-be-shut-off"
, 4.4.4.5-Exhaust-fans-and-dampers-shall-not-be-required-to-be-_______-on-system-
actuation-as-the-systems-have-been-tested-under-both-zero--and-high-velocity-flow-
conditions.---ans-✔✔"shut-down"
4.4.4.7-Shutoff-devices-shall-require-_______-prior-to-fuel-or-power-being-restored.---ans-
✔✔"manual-resetting"
4.5.1-Pipe-and-associated-fittings-shall-be-of-________-material-having-physical-and-
chemical-characteristics-compatible-with-the-wet-chemical-solution.---ans-✔✔"non-
combustible"
4.5.2-_______-pipe-and-fittings-shall-not-be-used-unless-specifically-listed-with-the-
system.---ans-✔✔"Galvanized"
5.1-Wet-chemical-fire-extinguishing-systems-for-use-in-cooking-operations-shall-comply-
with-_________.---ans-✔✔"ANSI/UL300"
5.1.2.3-When-two-or-more-hazards-can-be-simultaneously-involved-in-fire-by-reason-of-
their-proximity,-the-hazards-shall-be-protected-by-either-of-the-following:---ans-✔✔1.-
Individual-system-installed-on-each-hazard-to-operate-simultaneously.
2.-A-single-system-designed-and-installed-to-protect-all-hazards-that-can-be-
simultaneously-involved.
5.2.1-All-systems-shall-have-both-_______-and-________-methods-of-actuation.---ans-
✔✔"automatic"-"manual"
5.2.1.6-At-least-______-manual-actuator-shall-be-provided-for-each-system.---ans-
✔✔"One"
5.6.1.4-At-least-_______-fusible-link-or-heat-detector-shall-be-installed-within-each-
exhaust-duct-opening-in-accordance-with-the-manufacturer's-listing.---ans-✔✔"One"
5.6.1.5-A-________-or-________-shall-be-provided-above-each-protected-cooking-
appliance-and-in-accordance-with-the-extinguishing-system-manufacturer's-design,-
installation,-and-maintenance-manual.---ans-✔✔"Fusible-link"-"heat-detector"
5.6.1.5.2-A-_____________-device-shall-be-permitted-for-more-than-one-appliance-when-
installed-in-accordance-with-the-system's-listing.---ans-✔✔"single-listed-detection"
5.6.1.6-Where-the-pipe-or-other-conduit-penetrates-a-duct-or-hood,-the-penetration-shall-
have-a-___________-or-shall-be-sealed-by-a-listed-device.---ans-✔✔"liquidtight-
continuous-external-weld"
5.6.2.2-All-sources-of-fuel-or-heat-to-appliances-served-by-the-common-exhaust-duct-shall-
be-________-upon-actuation-of-any-protection-system-in-accordance-with-4.4.4---ans-
✔✔"shut-down"
Branch-Duct---ans-✔✔the-duct-work-that-contains-the-exhaust-air-from-a-single-hood-or-
hazard-area.
Common-Duct---ans-✔✔the-duct-work-containing-the-exhaust-air-from-two-or-more-
branch-ducts.
4.3.1.1-Discharge-nozzles-shall-be-provided-with-an-________-or-a-_________-located-
immediately-up-stream-of-the-nozzle.---ans-✔✔"Internal-Strainer"-"separate-listed-
strainer"
4.3.1.2-Discharge-nozzles-shall-be-of-______,-_______,-or-other-corrosion-resistant-
materials-or-be-protected-inside-and-out-against-corrosion.---ans-✔✔"brass",-"stainless-
steel"
4.3.1.4-Discharge-nozzles-shall-be-__________-__________-for-identification.---ans-
✔✔"permanently-marked"
4.3.1.5-All-discharge-nozzles-shall-be-provided-with-______-or-_______-to-prevent-the-
entrance-of-grease-vapors,-moisture,-environmental-contaminants,-or-other-foreign-
materials-into-the-piping.---ans-✔✔"caps"-"or-other-suitable-devices"
4.4.3.1-Manual-actuators-shall-not-require-a-force-of-more-than-____.---ans-✔✔"40lbs"
4.4.3.2-Manual-actuators-shall-not-require-a-movement-of-more-than-_______-to-secure-
operation.---ans-✔✔"14inches"
4.4.3.3-All-manual-actuators-shall-be-provided-with-_______.---ans-✔✔"operating-
instructions"
4.4.4.1-On-actuation-of-any-cooking-equipment-fire-extinguishing-system,-all-sources-of-
fuel-and-electric-power-that-produce-heat-to-all-equipment-protected-by-the-system-shall-
_______---ans-✔✔"be-shut-down"
4.4.4.2-Gas-appliances-not-requiring-protection-but-located-under-the-same-ventilation-
equipment-shall-_______---ans-✔✔"also-be-shut-off"
, 4.4.4.5-Exhaust-fans-and-dampers-shall-not-be-required-to-be-_______-on-system-
actuation-as-the-systems-have-been-tested-under-both-zero--and-high-velocity-flow-
conditions.---ans-✔✔"shut-down"
4.4.4.7-Shutoff-devices-shall-require-_______-prior-to-fuel-or-power-being-restored.---ans-
✔✔"manual-resetting"
4.5.1-Pipe-and-associated-fittings-shall-be-of-________-material-having-physical-and-
chemical-characteristics-compatible-with-the-wet-chemical-solution.---ans-✔✔"non-
combustible"
4.5.2-_______-pipe-and-fittings-shall-not-be-used-unless-specifically-listed-with-the-
system.---ans-✔✔"Galvanized"
5.1-Wet-chemical-fire-extinguishing-systems-for-use-in-cooking-operations-shall-comply-
with-_________.---ans-✔✔"ANSI/UL300"
5.1.2.3-When-two-or-more-hazards-can-be-simultaneously-involved-in-fire-by-reason-of-
their-proximity,-the-hazards-shall-be-protected-by-either-of-the-following:---ans-✔✔1.-
Individual-system-installed-on-each-hazard-to-operate-simultaneously.
2.-A-single-system-designed-and-installed-to-protect-all-hazards-that-can-be-
simultaneously-involved.
5.2.1-All-systems-shall-have-both-_______-and-________-methods-of-actuation.---ans-
✔✔"automatic"-"manual"
5.2.1.6-At-least-______-manual-actuator-shall-be-provided-for-each-system.---ans-
✔✔"One"
5.6.1.4-At-least-_______-fusible-link-or-heat-detector-shall-be-installed-within-each-
exhaust-duct-opening-in-accordance-with-the-manufacturer's-listing.---ans-✔✔"One"
5.6.1.5-A-________-or-________-shall-be-provided-above-each-protected-cooking-
appliance-and-in-accordance-with-the-extinguishing-system-manufacturer's-design,-
installation,-and-maintenance-manual.---ans-✔✔"Fusible-link"-"heat-detector"
5.6.1.5.2-A-_____________-device-shall-be-permitted-for-more-than-one-appliance-when-
installed-in-accordance-with-the-system's-listing.---ans-✔✔"single-listed-detection"
5.6.1.6-Where-the-pipe-or-other-conduit-penetrates-a-duct-or-hood,-the-penetration-shall-
have-a-___________-or-shall-be-sealed-by-a-listed-device.---ans-✔✔"liquidtight-
continuous-external-weld"
5.6.2.2-All-sources-of-fuel-or-heat-to-appliances-served-by-the-common-exhaust-duct-shall-
be-________-upon-actuation-of-any-protection-system-in-accordance-with-4.4.4---ans-
✔✔"shut-down"
