NFPA 17A, Standard for Wet Chemical Extinguishing Systems

Help ensure wet chemical fire extinguishing systems are ready to perform as intended by referencing the most current NFPA 17A requirements.

Fire suppression systems and equipment play a critical role in reducing loss and protecting lives in the event of an emergency. NFPA 17A, Standard for Wet Chemical Extinguishing Systems, provides requirements for designing, installing, operating, testing, and maintaining these systems through their life cycle.

Provisions focus on helping to improve the integrity and reliability of equipment designed to discharge wet chemicals from fixed nozzles and piping by means of expellant gas. Content is relevant to systems utilized in restaurants and institutional hoods, plenums, ducts, and related cooking appliances, covering everything from components to plans and acceptance testing and inspection, maintenance, and recharging.

Major changes to the 2024 edition focus on:

• Institutional hoods, plenums, ducts, and associated cooking appliances
• Nozzles, piping, and overall system components
• Common deficiencies and impairments

Table of Contents:

Chapter 1 Administration

1.1 Scope.
1.2 Purpose.
1.3 Application.
1.4 Retroactivity.
1.5 Equivalency.
1.6 Units and Formulas.
1.7 Qualifications.

Chapter 2 Referenced Publications

2.1 General.
2.2 NFPA Publications.
2.3 Other Publications.
2.4 References for Extracts in Mandatory Sections.

Chapter 3 Definitions

3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.

Chapter 4 Components

4.1 General.
4.2 Detectors.
4.3 Discharge Nozzles.
4.4 Operating Devices.
4.5 Pipe and Fittings, Tubing, and Hose.
4.6 Wet Chemical.
4.7 Electrical Wiring and Equipment.
4.8 Indicators.
4.9 Assembly.

Chapter 5 Systems for the Protection of Commercial Cooking Operations

5.1 General.
5.2 System Actuation.
5.3 Supervision.
5.4 System Location.
5.5 Discharge Nozzles.
5.6 Special Requirements.

Chapter 6 Systems for the Protection of Mobile Equipment

6.1 General.
6.2 Components.
6.3 System Requirements.

Chapter 7 Plans and Acceptance Tests

7.1 Specifications.
7.2 Review and Certification.
7.3 Plans.
7.4 Approval of Installations.

Chapter 8 Inspection, Maintenance, and Recharging

8.1 Responsibility.
8.2 Owner’s Inspection.
8.3 Maintenance.
8.4 Recharging.
8.5 Hydrostatic Testing.
8.6 Service Collar.

Annex A Explanatory Material
Annex B Systems for Protection of Residential Stoves When Used in Other than Commercial Cooking Operations
Annex C Common Deficiencies and Impairments
Annex D Informational References

2024 (9781455930425)

2021 (9781455926282)

2017 (9781455915545)

2013 (NFPA17A-13)