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FDNY S12 & S15 Study Guide 2026 – Fire Sprinkler Systems Certificate of Fitness Exam Questions and Answers

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This study guide covers key concepts and exam questions for the FDNY S12 and S15 Certificate of Fitness examinations related to sprinkler systems and water-based fire protection systems. It includes definitions, inspection requirements, impairment procedures, sprinkler system types, fire pumps, water supplies, fire department connections, maintenance schedules, and foam-water fire suppression systems. The material is presented in a question-and-answer format designed for exam preparation and review. It provides comprehensive coverage of sprinkler system operation, inspection frequencies, fire protection equipment, NFPA-based maintenance requirements, and Certificate of Fitness holder responsibilities. Keywords sprinkler systems water based fire protection wet pipe systems dry pipe systems preaction systems deluge systems fire pumps fire department connections impairment coordinator fire watch control valves OS&Y valves gravity tanks pressure tanks waterflow alarms supervisory signals sprinkler inspections sprinkler maintenance fire protection equipment foam water systems fire suppression systems NFPA 25 certificate of fitness fire safety building fire protection sprinkler heads water supplies alarm devices backflow prevention fire prevention

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S12 S15 Study Guide 2026
Exam Questions and Answers |
Already Graded A+



Sprinkler System - ANSWER ✔✔A fire extinguishing system, other

than a water mist system, that utilizes water as the extinguishing agent.


Automatic/Non-Automatic Sprinkler Systems - ANSWER ✔✔Shall be

inspected by a competent person holding a S12 CoF and employed or

contracted by the owner, to see that all parts of the system are in good

working order, and that the fire department connections, if any, are ready

for immediate use by the fire department.

,6 Extra Sprinkler Heads - ANSWER ✔✔A Supply of ____ shall be

kept available on the premises, to replace promptly any fused or

damaged_____

Fire Department Connections/Connections for a Sprinkler System -

ANSWER ✔✔Subjected to a hydrostatic pressure test to demonstrate

its suitability for fire department use, every 5 years.


Impairment Coordinator - ANSWER ✔✔Complies with the

requirements of study material


Impairment Coordinator - ANSWER ✔✔Shall take the actions when

a standpipe system, sprinkler system or the fire alarm system is out of

service.


Impairment Coordinator - ANSWER ✔✔Shall maintain records of all

system inspections, tests, servicing and other items of maintenance.


Impairment Coordinator - ANSWER ✔✔Building Owner in the

absence of a specific designee.


Planned Removal From Service - ANSWER ✔✔When the system, or

a portion of the sprinkler system, is placed out of service for a scheduled

inspection, testing, regular maintenance, minor repairs or for

construction affecting not more than 1 floor.

,Unplanned Out of Service Condition - ANSWER ✔✔A serious defect

in the sprinkler system including, but not limited to: an empty tank, a

break or major leak in the system's water piping, inoperative or shut

water supply valves, defective fire department connections, construction

related shut downs affecting more than one floor, or complete or partial

shut downs of the sprinkler system, other than a shut down for a planned

removal form service.


Tag Requirement - ANSWER ✔✔Shall be used to indicate that a

system, or portions are out of service.


Tags - ANSWER ✔✔Shall indicate the are affected, a brief

description of the condition, the occupancy classification, CoF number

and the estimated time until the system becomes operational.


Green Tags - ANSWER ✔✔If no impairment is found in the entire

system ___ will be placed on the main control valve.


Systems Fully Out of Service - ANSWER ✔✔White Discs 8-9" in

diameter is placed on all affected fire department connections. A red tag

shall be placed at the main control valve indicating the sprinkler

company name, date of removal from service and anticipated return to

service date.




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, Systems Partially Out of Service - ANSWER ✔✔Blue Discs 8-9" in

diameter is placed on all affected fire department connections. a red tag

shall be placed at the main control valve and ay closed sectional valve

indicating the company name, date or removal from service and

anticipated return to service date.


Fire Watch - ANSWER ✔✔Building staff trained and knowledgeable

in conducting a fire watch may conduct a ____ in lieu of a fire guard

during the initial 4 hours of a planned removal from service, or after

discovery of an unplanned out-of-service condition, provided that the

floor or area in which the fire protection system is out of service does not

exceed 50,000 sqft.


CoF Holder - ANSWER ✔✔Responsibilities include: Record

Keeping, Records, Detailed Records, Riser Card Updates.


Record Keeping - ANSWER ✔✔Maintain a detailed record of all

inspections.


Records - ANSWER ✔✔All system inspections, tests, servicing and

other maintenance required by this NYC Fire Code, the NYC Fire rules

or the referenced standards shall be maintained on the premises for a

minimum of 3 years.

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