Orange Municipal Code Ch. 80 Referenced Standards (CA)

NFPA 13, 2025 Edition, Standard for the Installation of Sprinkler Systems

9.4.3.1 [Amended] When fire sprinkler systems are installed in shell buildings of undetermined use (Spec Buildings) other than warehouses (S occupancies), fire sprinklers of the quick-response type shall be used. Use is considered undetermined if a specific tenant/occupant is not identified at the time the fire sprinkler plan is submitted. Sprinklers in light hazard occupancies shall be one of the following:

1.	Quick-response type as defined in Section 3.3.223.4.16.
2.	Residential sprinklers in accordance with the requirements of Chapter 12.
3.	Quick response CMSA sprinklers.
4.	ESFR sprinklers.
5.	Standard-response sprinklers used for modifications or additions to existing light hazard systems equipped with standard-response sprinklers.
6.	Standard-response sprinklers used where individual standard-response sprinklers are replaced in existing light hazard systems.

16.12.2 [Amended] The following systems shall not require a fire department connection:

(1) Buildings located in remote areas that are inaccessible for fire department support.

(2) Large-capacity deluge systems exceeding the pumping capacity for the fire department.

16.12.3.1 [Delete and Replace] The FDC shall contain a minimum of two 2 1/2" inlets. The location shall be approved and be no more than 40 feet from a fire hydrant, and at least 40 feet from the building it supplies unless otherwise approved by the fire code official. The size of piping and the number of inlets shall be approved by the fire code official. If acceptable to the water purveyor, it may be installed on the backflow assembly. Fire department inlet connections shall be painted "OSHA safety red." Four 2 1/2" inlets shall be provided when the automatic fire sprinkler system design (including system-supplied fire hose stream demand) requires 500 gpm or greater.

19.1.1.1 [Added] When fire sprinkler systems are required in buildings of undetermined use other than warehouses, they shall be designed and installed to have a fire sprinkler density of not less than that required for an Ordinary Hazard Group 2 use, with no reduction(s) in density or design area. Warehouse fire sprinkler systems shall be designed to Table 21.4.1.2.1(c) Commodity Class IV, Nonencapsulated. Use is considered undetermined if a specific tenant/occupant is not identified at the time the sprinkler plan is submitted. Where a subsequent use or occupancy requires a system with greater capability, it shall be the responsibility of the occupant to upgrade the system to the required density for the new use or occupancy.

NFPA 13D 2025 Edition, Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes

7.1.2 [Delete and Replace] The sprinkler system piping shall not have separate control valves installed unless supervised by a central station, proprietary, or remote station alarm service.

NFPA 14, 2025 Edition, Standard for the Installation of Standpipe and Hose Systems

9.5.1.1 [Amended] Class I and III Standpipe hose connections shall be unobstructed and shall be located not less than 18 inches or more than 24 inches above the finished floor. Class II Standpipe hose connections shall be unobstructed and shall be located not less than 3 feet or more than 5 feet above the finished floor.

NFPA 24, 2025 Edition, Standard for the Installation of Private Fire Service Mains and Their Appurtenances

6.2.8.1 [Added] All indicating valves controlling fire suppression water supplies shall be painted OSHA red.

Exceptions:

1.	Brass or bronze valves on sprinkler risers mounted to the exterior of the building may be left unpainted.

6.2.9 [Amended] All connections to private fire service mains for fire protection systems shall be arranged in accordance with one of the following so that they can be isolated:

1.	A post indicator valve installed not less than 40 feet from the building.	A post indicator valve installed not less than 40 feet from the building.
	1.1	For buildings less than 40 feet (12 m) in height, a post indicator valve shall be permitted to be installed closer than 40 feet but at least as far from the building as the height of the wall facing the post indicator valve.
2.	A wall post indicator valve.	A wall post indicator valve.
3.	An indicating valve in a pit, installed in accordance with Section 6.4.	An indicating valve in a pit, installed in accordance with Section 6.4.
4.	A backflow preventer with at least one indicating valve not less than 40 feet from the building.	A backflow preventer with at least one indicating valve not less than 40 feet from the building.
	4.1	For buildings less than 40 feet in height, a backflow preventer with at least one indicating valve shall be permitted to be installed closer than 40 feet but at least as far from the building as the height of the wall facing the backflow preventer.
5.	Control valves installed in a fire-rated room accessible from the exterior.	Control valves installed in a fire-rated room accessible from the exterior.
6.	Control valves in a fire-rated stair enclosure accessible from the exterior.	Control valves in a fire-rated stair enclosure accessible from the exterior.

10.1.5 [Added] All ferrous pipe and joints shall be polyethylene encased per AWWA C150, Method A, B, or C. All fittings shall be protected with a loose, 8-mil polyethylene tube or sheet. The ends of the tube or sheet shall extend past the joint by a minimum of 12 inches and be sealed with 2-inch-wide tape approved for underground use. Galvanizing does not meet the requirements of this section.

Exception: 304 or 316 Stainless steel pipe and fittings.

10.4.3.1 [Amended] Private fire service mains supplying fire protection systems within the building shall be permitted to extend no more than 24 inches, as measured from the outside of the building, under the building to the riser location.

10.4.3.2 [Amended] Where fire service mains enter the building adjacent to the foundation, the pipe may run under a building to a maximum of 24 inches, as measured from the interior face of the exterior wall to the center of the vertical pipe. The pipe under the building or building foundation shall be 304 or 316 stainless steel and shall not contain mechanical joints or it shall comply with Section 10.4.3.2.1 through 10.4.3.2.4.

Appendices D, E, F, G, I, J, K, L, M and N. [Deleted]

(Ord. 07-22, 2022; Ord. 01-25, 1/28/2025; Ord. 17-25, 11/12/2025)