NFPA 15, Standard for Water Spray Fixed Systems for Fire Protection

Better understand the requirements for design, installation, testing, and maintenance of water spray fixed systems.

Industrial fire protection depends on the proper operation of water spray fixed systems. Keep fire protection systems up to code and ready to respond with NFPA 15, Standard for Water Spray Fixed Systems for Fire Protection. Reflecting the latest technology, test data, and field experience, this standard covers the design, installation, maintenance, and test requirements for fixed water spray systems.

NFPA 15 provides minimum requirements for the design, installation, and system acceptance testing of water spray fixed systems. A key change to the 2027 edition is added provisions for weep holes as part of auxiliary drains in fixed spray systems.

NFPA^® 15 Standard for Water Spray Fixed Systems for Fire Protection 2027 Edition

Chapter 1 Administration

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

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 General Requirements

4.1 Design Objectives.
4.2 Special Considerations.
4.3 Qualifications.
4.4 Control of Runoff.
4.5 Flammable and Combustible Liquids.

Chapter 5 System Components

5.1 General.
5.2 Water Spray Nozzles.
5.3 Pipe and Tube.
5.4 Fittings.
5.5 Joining of Pipe and Fittings.
5.6 Hangers.
5.7 Valves.
5.8 Pressure Gauges.
5.9 Strainers.
5.10 Fire Department Connections.
5.11 Alarms.
5.12 Detection Systems.

Chapter 6 Installation Requirements

6.1 Basic Requirements.
6.2 Water Spray Nozzles.
6.3 Piping Installation.
6.4 System Attachments.
6.5 Automatic Detection Equipment.

Chapter 7 Design Objectives

7.1 System Design.
7.2 Extinguishment.
7.3 Control of Burning.
7.4 Exposure Protection.
7.5 Flammable Vapor Mitigation.
7.6 Combined Systems.
7.7 Automatic Detection Equipment.

Chapter 8 Plans and Hydraulic Calculations

8.1 General.
8.2 Working Plans.
8.3 Hydraulic Calculations.
8.4 Water Supply Information.
8.5 Hydraulic Calculation Procedures.

Chapter 9 Water Supplies

9.1 General.
9.2 Volume and Pressure.
9.3 Acceptable Water Supply Systems.

Chapter 10 System Acceptance

10.1 Certification.
10.2 Flushing of Supply Pipe.
10.3 Hydrostatic Pressure Tests.
10.4 Operating Tests.
10.5 Hydraulic Design Information Sign.
10.6 General Information Sign.

Chapter 11 System Inspection, Testing, and Maintenance

11.1 General.

Chapter 12 Ultra-High-Speed Water Spray Systems

12.1 General.
12.2 Response Time.
12.3 Design Considerations.
12.4 System Acceptance.
12.5 Testing and Maintenance.

Annex A Explanatory Material
Annex B Hydraulic Calculations
Annex C Informational References

2027 ()

2022 (9781455927739)

2017 (9781455913787)

2012 (NFPA15-12)