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NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems
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What is NFPA 25?
NFPA 25: Document Scope

1.1 Scope. This document establishes the minimum requirements for the periodic inspection, testing, and maintenance of water-based fire protection systems and the actions to undertake when changes in occupancy, use, process, materials, hazard, or water supply that potentially impact the performance of the water-based system are planned or identified.
1.1.1 Coordination with NFPA 72 Testing Requirements. This standard does not address all of the inspection, testing, and maintenance of the electrical components of the automatic fire detection equipment used to activate preaction and deluge systems that are addressed by NFPA 72 .
1.1.1.1 The inspection, testing, and maintenance required by this standard and NFPA 72 shall be coordinated so that the system operates as intended.
1.1.1.2* All inspections, testing, and maintenance required by NFPA 72 shall conform to NFPA 72, and all inspections, testing, and maintenance required by this standard shall conform to this standard.
A.1.1.1.2 There are times when a single inspection or test can meet the requirements of both NFPA 25 and NFPA 72 (e.g., operation of a tamper switch). This standard does not necessarily require that two separate inspections or tests be conducted on the same component, provided the inspection or test meets the requirements of both standards and the individual performing the inspection or test is qualified to perform the inspection or test required by both standards.
1.1.2 Types of Systems.
1.1.2.1 The types of systems addressed by this standard include, but are not limited to, sprinkler, standpipe and hose, fixed water spray, private fire hydrants, water mist, and foam water.
1.1.2.2 Water supplies that are part of these systems, such as private fire service mains and appurtenances, fire pumps and water storage tanks, and valves that control system flow, are also included in this standard.
1.1.3* This standard addresses the operating condition of fire protection systems as well as impairment handling and reporting and applies to fire protection systems that have been properly installed in accordance with generally accepted practice.
A.1.1.3 Generally accepted NFPA installation practices for water-based fire protection systems relevant to this standard are found in the following:
NFPA 13, Standard for the Installation of Sprinkler Systems
NFPA 13R, Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies
NFPA 14, Standard for the Installation of Standpipe and Hose Systems
NFPA 15, Standard for Water Spray Fixed Systems for Fire Protection
NFPA 16, Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems
NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection
NFPA 22, Standard for Water Tanks for Private Fire Protection
NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances
NFPA 750, Standard on Water Mist Fire Protection Systems

1.1.3.1* This standard does not require the inspector to verify the adequacy of the design of the system.
A.1.1.3.1 The requirement to evaluate the adequacy of the design of the installed system or the capability of the fire protection system to protect the building or its contents, is not a part of the periodic inspection, testing, and maintenance requirements of this standard. Examples of items not covered by this standard include the evaluation of unsprinklered areas and the spacing of sprinklers. However, such evaluation is the responsibility of the property owner or designated representative as indicated in 4.1.6, 4.1.7, and the Hazard Evaluation Form in Annex E.
1.1.4* Corrective action needed to ensure that a system operates in a satisfactory manner shall be in accordance with this standard unless this standard specifically refers to an appropriate installation standard.
A.1.1.4 For systems originally installed in accordance with one of these standards, the repair, replacement, alteration, or extension of such systems should also be performed in accordance with that same standard. When original installations are based on other applicable codes or standards, repair, replacement, alteration, or extension practices should be conducted in accordance with those other applicable codes or standards.
1.1.5 Unless required by Chapter 16, this standard shall not apply to sprinkler systems designed, installed, and maintained in accordance with NFPA 13D.

NFPA 25 is the baseline for inspection, testing, and maintenance of water-based fire protection systems. Compliance helps maximize system integrity to avoid failure and ensure fast, effective response in a fire emergency. Official document scope
What does NFPA 25 address?
The Standard governs the periodic inspection, testing, and maintenance of water-based fire protection systems including land-based and marine applications. Requirements are provided for standpipe systems including hose outlets, fire pumps, sprinklers, fire service piping, and valves, along with system impairment handling and reporting.
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