CRSC · California Referenced Standards Code

What plumbing code cross‑references apply when installing gas shutoff devices in the 12‑16 series?

If a gas shutoff device is certified under the CRSC 12‑16 series, you must install it following the California Plumbing Code (not just the CRSC certification). The Plumbing Code governs listing, sizing, accessibility, bonding, overpressure/automatic‑shutoff settings, and special local ordinance requirements for earthquake and excess‑flow devices; see **§ 12‑16‑101.1** and **§ 12‑16‑201.1** for the CRSC linkage and the Plumbing Code sections noted above for the detailed rules.

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

The California Referenced Standards Code (CRSC) requires that installations of customer‑owned gas shutoff devices certified under the 12‑16 series be installed in accordance with the California Plumbing Code. Specifically, § 12‑16‑101.1 requires installations of ASCE/ANSI earthquake‑actuated devices to follow the California Plumbing Code, and § 12‑16‑201.1 requires the same for residential excess‑flow valves. § 12‑16‑101.1 and § 12‑16‑201.1 .

The single most important rule: if a device is certified under the 12‑16 standards, install it to the California Plumbing Code — do not treat the CRSC certification as a substitute for the Plumbing Code requirements.

Requirements in detail

The CRSC establishes which device standards the State Architect accepts, then ties every installation back to the California Plumbing Code (Title 24, Part 5). From the Plumbing Code the most decision‑relevant provisions when installing shutoff devices are these (summary + code §).

Which device standards are covered by the 12‑16 series
- Earthquake‑actuated automatic gas shutoff devices — certified per ASCE/ANSI/SEI 25‑16; installations must follow the California Plumbing Code (§ 12‑16‑101.1) .
- Residential excess flow actuated automatic gas shutoff valves — certified per ASTM F2138 / ANSI Z21.93; installations must follow the California Plumbing Code (§ 12‑16‑201.1) .
Key California Plumbing Code provisions that apply to shutoff devices (plain English + code citation and source):
- Accessibility & marking — Manual and system shutoff valves must be readily accessible, protected from damage and identified (tagged). See § 1210.9 and § 1210.9.1.
- Earthquake‑actuated valves — Where local ordinance requires them, certified earthquake‑actuated valves must be provided and installed per ordinance or manufacturer instructions; uncertified devices are prohibited in public buildings subject to mandatory local ordinances. See § 1211.8.
- Excess flow valves — Excess flow valves must be listed to ANSI Z21.93/CSA 6.30 and sized/installed per the manufacturer. See § 1209.1 and the referenced standard listing.
- Overpressure protection / automatic shutoff — Automatic shutoff devices are one of the acceptable overpressure protection methods and must be set to shut at the limits in the Plumbing Code; where separate devices are used they must meet the Construction/Installation and testing requirements. See § 1208.9 and § 1208.9.2–.5.
- Shutoff valve selection & listing — Shutoff valves 1 inch NPT and smaller must be listed and labeled; selection must follow the Plumbing Code table requirements. See § 1208.13 and Table references.
- Bonding & electrical considerations — Gas piping and electrically operated controls have bonding/grounding and electrical‑connection rules; do not use gas piping as an electrical conductor. See § 1211.4–.7.
- Appliance connectors & caps — Outlet, connector and cap requirements (e.g., cap outlets when disconnected) govern how appliance/disconnect connections downstream of a shutoff are handled. See § 1210.8–.8.2 and § 1212.1.

Decision table — dimensions that determine which Plumbing Code rules you apply

Decision dimension	Typical values / thresholds	What matters for installation	Code Reference
Device category	Earthquake‑actuated OR Excess‑flow	Determines which referenced device standard and which plumbing sections are most directly applied	§ 12‑16‑101.1 ; § 12‑16‑201.1
Listing / standard	ASCE/ANSI/SEI 25‑16; ANSI Z21.93 / ASTM F2138	Device must be certified/listed to the referenced standard and installed per Plumbing Code/manufacturer	§ 12‑16‑101. and § 12‑16‑201.
Valve size	≤ 1 inch NPT vs > 1 inch	Valves ≤ 1 inch must be listed and labeled; selection must follow Table requirements	§ 1208.13
System pressure	Service > 2 psi (14 kPa) OR ≤ 2 psi	Overpressure protection required when supplier delivers > 2 psi to systems meant for low‑pressure appliances	§ 1208.8 and § 1208.9
Accessibility	Readily accessible; protected from damage	Valves and emergency/exterior shutoffs must be accessible and marked	§ 1210.9 / § 1210.9.1
Local ordinance	Required vs optional	Local ordinances can mandate earthquake valves; installations must follow ordinance and Plumbing Code	§ 1211.8

Exceptions & special cases

Local ordinance may mandate earthquake‑actuated shutoff valves for buildings; where mandated, provide valves certified by the State Architect. Uncertified valves are prohibited in public buildings subject to such ordinances. See § 1211.8 and the CRSC mapping to Chapter 12‑16‑1 (§ 12‑16‑101.1).
The Plumbing Code allows certain listed devices (for example, listed quick‑disconnect outlets or factory‑equipped vent limiting devices) to be installed per their listing and manufacturer instructions without following some generic placement rules; always check the appropriate Plumbing Code exception language for appliance types. See the relevant Plumbing Code apparatus sections (e.g., outlet and vent exceptions).
Where an automatic shutoff is used as overpressure protection, it must be manually reset and designed so it remains closed until reset, per Plumbing Code overpressure device rules. See § 1208.9(4) and § 1208.9.2.

Common mistakes

Assuming CRSC certification alone authorizes installation without following the California Plumbing Code. The CRSC requires compliance with the Plumbing Code for installations — § 12‑16‑101.1 and § 12‑16‑201.1.
Installing an excess‑flow valve without verifying it is listed to ANSI Z21.93 / ASTM F2138 and sized/installed per manufacturer and § 1209.1.
Failing to provide a required accessible upstream manual shutoff or failing to mark/tag shutoff valves as required by § 1210.9 and § 1210.9.1.
Using a non‑listed small valve (≤ 1 inch) or selecting a valve size without following the Plumbing Code selection criteria in § 1208.13.
Overlooking bonding/electrical rules when the device has electrical controls — Plumbing Code sections on bonding and electrical connections (e.g., § 1211.4–.7) must be followed.

Worked example — concrete scenario

Scenario: You are installing a State‑Architect‑certified earthquake‑actuated automatic gas shutoff device on the incoming gas line to a small public building where a local ordinance requires earthquake shutoffs.

Steps and code grounding:

Verify the device is certified under ASCE/ANSI/SEI 25‑16 (covered by the CRSC). The CRSC links the device standard to the Plumbing Code: § 12‑16‑101.1 requires the installation be in accordance with the California Plumbing Code.
Confirm local ordinance mandates installation and that the device is certified by the State Architect (if the building is public). If the device is uncertified, it is prohibited under § 1211.8.
Provide an upstream manual shutoff valve that is readily accessible and protected from physical damage, and permanently mark the valve so the piping it controls can be identified, per § 1210.9 and § 1210.9.1.
If the service pressure from the supplier is greater than 2 psi and the building appliances are designed for low pressure, verify overpressure protection requirements; an automatic shutoff may qualify as the overpressure protection but must be set and tested to the limits in § 1208.9 and § 1208.9.4 (and remain closed until manually reset).
If the shutoff device is electrically actuated or has control wiring, follow the Plumbing Code electrical connection and bonding rules (do not use gas piping as an electrical conductor; apply § 1211.4–.7).
Document device listing/certification and installation compliance in the job records and with the enforcing jurisdiction (because CRSC certification + Plumbing Code compliance together control the installation). See § 12‑16‑101.1 and applicable Plumbing Code sections.

Related provisions — quick list

California Referenced Standards Code — § 12‑16‑101.1 (earthquake actuated devices must be installed per California Plumbing Code).
California Referenced Standards Code — § 12‑16‑201.1 (residential excess‑flow devices must be installed per California Plumbing Code).
California Plumbing Code — § 1211.8 (earthquake‑actuated gas shutoff valves; local ordinance requirements and certification).
California Plumbing Code — § 1209.1 (excess flow valve listing/ANSI Z21.93 reference).
California Plumbing Code — § 1208.8–1208.9 (overpressure protection and automatic shutoff as an option).
California Plumbing Code — § 1208.13 (shutoff valve selection; listing requirements for ≤ 1 inch).
California Plumbing Code — § 1210.9 and § 1210.9.1 (manual gas shutoff valves, accessibility, marking).

Code references

Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:

CRSC § 12-16 High relevance — show source text
12-16-1 ENGINEERING REGULATIONS—QUALITY AND

DESIGN OF THE MATERIALS OF CONSTRUCTION

CALIFORNIA STANDARD FOR EARTHQUAKE-ACTUATED AUTOMATIC GAS SHUTOFF SYSTEMS (SEE CCR TITLE 24, PART 2, CHAPTERS 16 AND 16A, AND CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-1

DIVISION OF THE STATE ARCHITECT

Authority: Sections 19180–19183, Health and Safety Code. Reference: Section 19182, Health and Safety Code.

DIVISION 1—CONSTRUCTION

SCOPE

Sec. 12-16-101. The American Society of Civil Engineers (ASCE) requirements for “Earthquake-Actuated Automatic Gas Shutoff Devices,” ANSI/ASCE/SEI 25-16 (copyright 2016 by ASCE), shall be the applicable standard used by the Division of the State Architect for the certification of these devices.

Sec. 12-16-101.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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12-16-2 ENGINEERING REGULATIONS—QUALITY AND

DESIGN OF THE MATERIALS OF CONSTRUCTION

CALIFORNIA STANDARD FOR RESIDENTIAL EXCESS FLOW ACTUATED AUTOMATIC GAS SHUTOFF VALVES (SEE CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-2

DIVISION OF THE STATE ARCHITECT

Authority: Sections 19200–19204, Health and Safety Code. Reference: Sections 19201.5 and 19202, Health and Safety Code.

DIVISION 1—CONSTRUCTION

SCOPE

Sec. 12-16-201. The American Society for Testing and Materials (ASTM) F2138-12(2017) Standard Specification for Excess Flow Valves for Natural Gas Service, and the American National Standards Institute (ANSI) Z21.93-2017/CSA 6.30-2017 Excess Flow Valves for Natural and LP Gas with Pressure up to 5 psig, shall be the applicable standards used by the Division of the State Architect for certification of these devices.

Sec. 12-16-201.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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12-31C RADIATION SHIELDING STANDARDS

STANDARD 12-31C-1

DEPARTMENT OF HEALTH SERVICES
CRSC § 1210.7.1 High relevance — show source text
1210.7.1 Location of Drips. All drips shall be installed only in such locations that they are readily accessible to permit cleaning or emptying. A drip shall not be located where the condensate is likely to freeze. [NFPA 54:7.6.2] 1210.7.2 Sediment Traps. The installation of sediment traps shall be in accordance with Section 1212.9. [NFPA 54:7.6.3]

1210.8 Outlets. Outlets shall be located and installed in accordance with the following requirements:

(1) The outlet fittings or piping shall be securely fastened in place.

(2) Outlets shall not be located behind doors.

(3) Outlets shall be located far enough from floors, walls, patios, slabs, and ceilings to permit the use of wrenches without straining, bending, or damaging the piping.

(4) The unthreaded portion of gas piping outlets shall extend not less than 1 inch (25.4 mm) through finished ceilings or indoor or outdoor walls.

(5) The unthreaded portion of gas piping outlets shall extend not less than 2 inches (51 mm) above the surface of floors or outdoor patios or slabs.

(6) The provisions of Section 1210.8(4) and Section 1210.8(5) shall not apply to listed quick-disconnect devices of the flush-mounted type or listed gas convenience outlets. Such devices shall be installed in accordance with the manufacturer’s installation instructions. [NFPA 54:7.7.1.1 – 7.7.1.6] 1210.8.1 Cap Outlets. Each outlet, including a valve, shall be closed gastight with a threaded plug or cap immediately after installation and shall be left closed until the appliance or equipment is connected thereto. When an appliance or equipment is disconnected from an outlet and the outlet is not to be used again immediately, it shall be capped or plugged gastight.

Exceptions:

(1) Laboratory appliances installed in accordance with Section 1212.3.1 shall be permitted.

(2) The use of a listed quick-disconnect device with integral shutoff or listed gas convenience outlet shall be permitted. [NFPA 54:7.7.2.1] 1210.8.2 Appliance Shutoff Valves. Appliance shutoff valves installed in fireplaces shall be removed, and the piping capped gastight where the fireplace is used for solid fuel burning. [NFPA 54:7.7.2.2] 1210.9 Manual Gas Shutoff Valves. An accessible gas shutoff valve shall be provided upstream of each gas pressure regulator. Where two gas pressure regulators are installed in series in a single gas line, a manual valve shall not be required at the second regulator. [NFPA 54:7.8.2]

1210.9.1 Accessibility of Gas Valves. System shutoff valves shall be readily accessible for operation and installed so as to be protected from physical damage. System shutoff valves shall be marked with a metal tag or other permanent means attached by the installing agency so that the gas piping systems supplied through them can be readily identified. [NFPA 54:7.8.1.1 – 7.8.1.2] **1210.9.2 Shutoff Valves for Multiple House Lines.
CRSC § 1310.10 High relevance — show source text
(6) The provisions of Section 1310.10(4) and Section 1310.10(5) shall not apply to listed quick-disconnect devices of the flush-mounted type or listed gas convenience outlets. Such devices shall be installed in accor dance with the manufacturer’s installation instructions.

[NFPA 54:7.7.1.1 – 7.7.1.6] 1310.10.1 Cap Outlets. Each outlet, including a valve, shall be closed gastight with a threaded plug or cap immediately after installation and shall be left closed until the appliance or equipment is connected thereto. When an appliance or equipment is disconnected from an outlet and the outlet is not to be used again immediately, it shall be capped or plugged gastight.

Exceptions:

(1) Laboratory appliances installed in accordance with Section 1312.3.1 shall be permitted.

(2) The use of a listed quick-disconnect device with integral shutoff or listed gas convenience outlet shall be permitted. [NFPA 54:7.7.2.1] 1310.10.1.1 Appliance Shutoff Valves. Appliance shutoff valves installed in fireplaces shall be removed and the piping capped gastight where the fireplace is used for solid fuel burning. [NFPA 54:7.7.2.2] 1310.11 Manual Gas Shutoff Valves. An accessible gas shutoff valve shall be provided upstream of each gas pressure regulator. Where two gas pressure regulators are installed in series in a single gas line, a manual valve shall not be required at the second regulator. [NFPA 54:7.8.2] 1310.11.1 Accessibility of Gas Valves. System shutoff valves shall be readily accessible for operation and installed so as to be protected from physical damage. System shutoff valves shall be marked with a metal tag or other permanent means attached by the installing agency so that the gas piping systems supplied through them can be readily identified. [NFPA 54:7.8.1.1, 7.8.1.2]

1310.11.1.1 Shutoff Valves for Multiple House Lines. In multiple-tenant buildings supplied through a master meter, through one service regulator where a meter is not provided, or where meters or service regulators are not readily accessible from the appliance or equipment location, an individual shutoff valve for each apartment or tenant line shall be provided at a convenient point of general accessibility. In a common system serving a number of individual buildings, shutoff valves shall be installed at each building. [NFPA 54:7.8.3.1] 1310.11.2 Emergency Shutoff Valves. An exterior shutoff valve to permit turning off the gas supply to each building in an emergency shall be provided. The emergency shutoff valves shall be plainly marked as such and their locations posted as required by the Authority Having Jurisdiction. [NFPA 54:7.8.3.2] 1310.11.3 Shutoff Valve for Laboratories. Each laboratory space containing two or more gas outlets installed on tables, benches, or in hoods in educational, research,

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FUEL GAS PIPING

CRSC § 4.3 High relevance — show source text

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REFERENCED STANDARDS

TABLE 1701.2 (continued) STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER	DOCUMENT TITLE	APPLICATION
ASSE/IAPMO/ANSI 5120- 2015	Cross-Connection Control Surveyors	Professional Qualifications
ASSE/IAPMO/ANSI 5130- 2015	Backflow Prevention Assembly Repairers	Professional Qualifications
ASSE/IAPMO/ANSI 5140- 2015	Fire Protection System Cross-Connection Control Tester	Professional Qualifications
ASSE/IAPMO/ANSI 5150- 2015	Backflow Prevention Program Administrators	Professional Qualifications
ASSE/IAPMO/ANSI Series 6000-2021	Professional Qualifications Standard for Medical Gas Systems Personnel	Professional Qualifications
ASSE/IAPMO/ANSI 6015- 2021	Bulk Medical Gas/Cryogenic Fluid Central Supply Systems Installers	Professional Qualifications
ASSE/IAPMO/ANSI

CRSC § 69-2015 High relevance — show source text

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REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
ASSE/IAPMO/ANSI 6020- 2021	Medical Gas Systems Inspectors	Miscellaneous	1324.5.4.7, 1324.5.6.2, 1324.5.6.5
ASSE/IAPMO/ANSI 6030- 2021	Medical Gas Systems Verifiers	Miscellaneous	1324.5.4.7, 1324.5.6.2, 1324.5.6.5, 1324.5.7.2
ASSE/IAPMO/ANSI 6035- 2021	Bulk Medical Gas/Cryogenic Fluid Central Supply Systems Verifiers	Miscellaneous	1324.5.7.3
ASSE/IAPMO/ANSI Series 7000-2020	Residential Potable Water Fire Sprinkler System Installers & Inspectors for One- and Two-Family Dwellings	Miscellaneous	612.1
ASSE/IAPMO/ANSI 12010-2021	Environment of Care,

CRSC § 12-7 High relevance — show source text
Fire tests of building
construction and materials.|SFM|Part 2, Section 703| |Chapter 12-7-2|Reserved||| |Chapter 12-7-3|Fire-resistive standards.
Fire testing furnaces.|SFM|Part 9, Section 3001| |Chapter 12-7-4|Fire-resistive standards.
Fire door assembly tests.|SFM|Part 2, Section 716| |Chapter 12-7-5|Fire-resistive standards. Interior
finish of decorative material.|SFM|Part 2, Chapter 8
Part 9, Chapter 8| |Chapter 12-7A|Materials and construction methods for
exterior wildfire exposure|SFM|Part 7, Chapter 5| |Chapter 12-8-1|Fire-resistive standards for fire protection|SFM|Part 2, Sections 408.14 and 435.6.2| |Appendix 12-8-1A|Calculation of the total rate of heat and carbon
monoxide or carbon dioxide production|SFM|| |Appendix 12-8-1B|Guide to mounting techniques for wall and
ceiling interior finish material|SFM|| |Chapter 12-10-1|Exits. Power-operated exit doors.|SFM|Part 2, Sections 408.4.2, 1010.1.4.2, 1010.1.9.1| |Chapter 12-10-2|Exits. Single-point latching or locking devices.|SFM|Part 2, Section 1010.2.2
Part 9, Section 1010.2.2| |Chapter 12-10-3|Exits. Emergency exit and panic hardware.
|SFM|Part 9, Section 1009.12| |Chapter 12-11A,
12-11B|Detectable warning products and directional
surfaces|DSA|Part 2, Sections 1112A.9, 1116A.5, 11B-247,
11B-406.5.12, 11B-705, 11B-810.5.2| |Chapter 12-12|Reserved||| |Chapter 12-13|Standards for insulating material|CA/SFM|Part 2.5, Section R302.10.1
Part 6, Section 110.8
Part 9, Section 720, Table 721.1(1)
Part 11, Section A5.504.4.8| |Chapter 12-16-1|California standard for earthquake-actuated
automatic gas shutoff systems|DSA|Part 2, Chapters 16 and 16A
Part 5, Section 1211.8| |Chapter 12-16-2|California standard for residential excess flow
actuated automatic gas shutoff valves|DSA|Part 5, Section 1209.1| |Chapter 12-31C|Radiation shielding|DPH|Part 2, Section 3102C| |Chapter 12-71|Air filters|SFM|Part 4, Sections 401.2, 509.2.3, 509.2.3.4
Part 6, Section 120.1| |Chapter 12-72-1|Protective signaling systems.
Standard test procedures.|SFM|| |Chapter 12-72-2|Protective signaling systems.
CRSC § 12-16 High relevance — show source text
CALIFORNIA STANDARD FOR RESIDENTIAL EXCESS FLOW ACTUATED AUTOMATIC GAS SHUTOFF VALVES (SEE CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-2

DIVISION OF THE STATE ARCHITECT

Authority: Sections 19200–19204, Health and Safety Code. Reference: Sections 19201.5 and 19202, Health and Safety Code.

DIVISION 1—CONSTRUCTION

SCOPE

Sec. 12-16-201. The American Society for Testing and Materials (ASTM) F2138-12(2017) Standard Specification for Excess Flow Valves for Natural Gas Service, and the American National Standards Institute (ANSI) Z21.93-2017/CSA 6.30-2017 Excess Flow Valves for Natural and LP Gas with Pressure up to 5 psig, shall be the applicable standards used by the Division of the State Architect for certification of these devices.

Sec. 12-16-201.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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12-31C RADIATION SHIELDING STANDARDS

STANDARD 12-31C-1

DEPARTMENT OF HEALTH SERVICES

Authority: Sections 102, 208 and 25811.

Reference: Sections 102, 208 and 436.5.

ALL HEALING ARTS X-RAY INSTALLATIONS

Sec. 12-31C-101. All radiation shielding barriers in rooms and enclosures housing radiation machines shall comply with the mandatory standards and appendices in Report No. 35, “Dental X-RAY Protection”; Report 49, “Structural Shielding Design and Evaluation for Medical use of X-rays and Gamma Rays of Energies up to 10 MeV”; and Report No. 51, “Radiation Protection Design Guidelines for 0.1-100 MeV Particle Accelerator Facilities.” Published by the National Council on Radiation Protection and Measurements, 7910 Woodmont Avenue, Bethesda, Maryland 20814.

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12-71 AIR FILTERS

STANDARD 12-71-1

STATE FIRE MARSHAL

DESCRIPTION OF TEST APPARATUS, METHOD AND CLASSIFICATION REQUIREMENTS FOR AIR FILTERS

Sec. 12-71-100.

(a) Test apparatus.
1. The test duct, made of M.S. gage galvanized sheet metal reinforced with angle irons, is 21 inches square (13 548 mm [2] ) and 13 [1] / 2 feet (4114 mm) long.
CRSC § 64703-64705. High relevance — show source text
This installed weight per square foot shall conform with the manufacturer’s installed design density per square foot at the manufacturer’s labeled R -value.

(b) Water heater insulation kits. No water heater insulation kit shall be sold, on or after March 25, 1982, unless it has a thermal resistance of at least R-6 and is so identified.

Each water heater insulation kit sold shall include instructions which are equivalent to the Department of Energy standard practice for the installation of insulation on gas-fired, oil-fired and electric resistance water heaters, 44 Fed. Reg. pages 64703-64705.

Authority: Section 25922, Public Resources Code.

Reference: Section 25922, Public Resources Code.

HISTORY:
1. Amendment filed 8-10-81; designated effective 9-22-81 (Register 81, No. 33).
2. Editorial correction of subsection (a) filed 1-13-82 (Register 82, No. 2).
INTERPRETATION

Sec. 12-13-1565.

The General Counsel of the Commission shall make a determination as to the application or interpretation of any provision of this article to any person requesting such a determination. Any such request shall be submitted in writing to the Commission. The Commission shall make written replies to such inquiries and shall widely publish interpretations that have broad application or interest.

Authority: Section 25218 (e), Public Resources Code.

Reference: Sections 25920 and 25922, Public Resources Code.

HISTORY:
1. Amendment filed 8-10-81; designated effective 9-22-81 (Register 81, No. 33).
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12-16-1 ENGINEERING REGULATIONS—QUALITY AND

DESIGN OF THE MATERIALS OF CONSTRUCTION

CALIFORNIA STANDARD FOR EARTHQUAKE-ACTUATED AUTOMATIC GAS SHUTOFF SYSTEMS (SEE CCR TITLE 24, PART 2, CHAPTERS 16 AND 16A, AND CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-1

DIVISION OF THE STATE ARCHITECT

Authority: Sections 19180–19183, Health and Safety Code. Reference: Section 19182, Health and Safety Code.

DIVISION 1—CONSTRUCTION

SCOPE

Sec. 12-16-101. The American Society of Civil Engineers (ASCE) requirements for “Earthquake-Actuated Automatic Gas Shutoff Devices,” ANSI/ASCE/SEI 25-16 (copyright 2016 by ASCE), shall be the applicable standard used by the Division of the State Architect for the certification of these devices.

Sec. 12-16-101.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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12-16-2 ENGINEERING REGULATIONS—QUALITY AND
CRSC § 1208.9 High relevance — show source text
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1208.9 Overpressure Protection Devices. Overpressure protection devices shall be one of the following:

(1) Pressure relief valve.

(2) Monitor regulator.

(3) Series regulator installed upstream from the line regulator and set to continuously limit the pressure on the inlet of the line regulator to the maximum values specified by Section 1208.10 or less.

(4) Automatic shutoff device installed in series with the line pressure regulator and set to shut off when the pressure on the downstream piping system reaches the maximum values specified by Section 1208.10 or less. This device shall be designed so that it will remain closed until manually reset. [NFPA 54:5.8.3.1] 1208.9.1 Separate Devices. The devices in Section 1208.9 shall be installed either as an integral part of the service or line pressure regulator or as separate units. Where separate overpressure protection devices are installed, they shall comply with Section 1208.9.2 through Section 1208.9.7. [NFPA 54:5.8.3.2]

1208.9.2 Construction and Installation. All overpressure protection devices shall meet the following requirements:

(1) Be constructed of materials so that the operation of the device is not impaired by corrosion of external parts by the atmosphere or of internal parts by the gas.

(2) Be designed and installed so they can be operated to determine whether the valve is free. The devices shall also be designed and installed so they can be tested to determine the pressure at which they operate and be examined for leakage when in the closed position. [NFPA 54:5.8.4] 1208.9.3 External Control Piping. External control piping shall be designed and installed so that damage to the control piping of one device does not render both the regulator and the overpressure protective device inoperative. [NFPA 54:5.8.5] 1208.9.4 Setting. Each pressure limiting or pressure relieving device shall be set so that the gas pressure supplied to the connected appliance(s) does not exceed the limits specified in Section 1208.10 and Section 1208.10.1.

[NFPA 54:5.8.6] 1208.9.5 Unauthorized Operation. Where unauthorized operation of any shutoff valve could render a pressure relieving valve or pressure limiting device inoperative, one of the following shall be accomplished:

(1) The valve shall be locked in the open position. Instruct authorized personnel in the importance of leaving the shutoff valve open and of being present while the shutoff valve is closed so that it can be locked in the open position before leaving the premises.

(2) Duplicate relief valves shall be installed, each having adequate capacity to protect the system, and arrange the isolating valves or three-way valve so that only one relief valve can be rendered inoperative at a time. [NFPA 54:5.8.7]

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CRSC § 5.9.1.1 High relevance — show source text
Gas and air combustion mixers incorporating double diaphragm “zero” or “atmosphere” governors or regulators shall require no further protection unless connected directly to compressed air or oxygen at pressures of 5 psi (34 kPa) or more. [NFPA 54:5.9.1.1 – 5.9.1.2]

1208.11.1 Protective Devices. Protective devices

shall include but not be limited to the following:

(1) Check valves.

(2) Three-way valves (of the type that completely closes one side before starting to open the other side).

(3) Reverse flow indicators controlling positive shutoff valves.

(4) Normally closed air-actuated positive shutoff pressure regulators. [NFPA 54:5.9.2]

1208.12 Low-Pressure Protection. A protective device shall be installed between the meter and the appliance or equipment if the operation of the appliance or equipment is such that it could produce a vacuum or a dangerous reduction in gas pressure at the meter. Such protective devices include, but are not limited to, mechanical, diaphragm-operated, or electrically operated low-pressure shutoff valves. [NFPA 54:5.10]

1208.13 Shutoff Valves. Shutoff valves shall be selected in

accordance with Table 1208.13. Shutoff valves of size 1 inch

(25 mm) National Pipe Thread and smaller shall be listed and labeled. Where used outdoors, such use shall be in accordance with the manufacturer’s recommendation. [NFPA 54:5.11]

1208.14 Expansion and Flexibility. Piping systems shall be designed to prevent failure from thermal expansion or contraction. [NFPA 54:5.13.1]

1208.14.1 Special Local Conditions. Where local conditions include earthquake, tornado, unstable ground, or flood hazards, special consideration shall be given to increased strength and flexibility of piping supports and connections. [NFPA 54:5.13.2]

1208.15 Pressure Regulator and Pressure Control Venting. The venting of the atmospheric side of diaphragms in line pressure regulators, gas appliance regulators, and gas pressure limit controls shall be in accordance with all of the following:

(1) An independent vent pipe to the outdoors, sized in accordance with the device manufacturer’s instructions, shall be provided where the location of a device is such that a discharge of fuel gas will cause a hazard. For devices other than appliance regulators, vents are not required to be independent where the vents are connected to a common manifold designed in accordance with engineering methods to minimize backpressure in the event of diaphragm failure and such design is approved.

Exceptions:

(1) A regulator and vent limiting means combination listed as complying with CSA/ANSI Z21.80/CSA 6.22, shall not be required to be vented to the outdoors.

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222 2025 CALIFORNIA PLUMBING CODE

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

FUEL GAS PIPING

(2) A listed gas appliance regulator factory equipped with a vent limiting device is not required to be vented to the outdoors.

(2) Materials for vent piping shall be in accordance with Section 1208.5 through Section 1208.5.12.5.
CRSC § 1208.7.2 High relevance — show source text
1208.7.2 Location. The gas pressure regulator shall be accessible for servicing. [NFPA 54:5.7.3] 1208.7.3 Regulator Protection. Pressure regulators shall be protected against physical damage. [NFPA 54:5.7.4]

1208.7.4 Regulator Vents. Regulator vents shall be in accordance with Section 1208.15. [NFPA 54:5.7.5] 1208.7.5 Identification. Line pressure regulators at multiple regulator installations shall be marked by a metal tag or other permanent means designating the building or the part of the building being supplied.

[NFPA 54:5.7.6]

1208.8 Overpressure Protection Required. Where the serving gas supplier delivers gas at a pressure greater than 2 psi (14 kPa) for piping systems serving appliances designed to operate at a gas pressure of 14 inches water column (3.5 kPa) or less, overpressure protection devices shall be installed. Piping systems serving equipment designed to operate at inlet pressures greater than 14 inches water column (3.5 kPa) shall be equipped with overpressure protection devices as required by the appliance manufacturer’s installation instructions. [NFPA 54:5.8.1]

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1208.9 Overpressure Protection Devices. Overpressure protection devices shall be one of the following:

(1) Pressure relief valve.

(2) Monitor regulator.

(3) Series regulator installed upstream from the line regulator and set to continuously limit the pressure on the inlet of the line regulator to the maximum values specified by Section 1208.10 or less.

(4) Automatic shutoff device installed in series with the line pressure regulator and set to shut off when the pressure on the downstream piping system reaches the maximum values specified by Section 1208.10 or less. This device shall be designed so that it will remain closed until manually reset. [NFPA 54:5.8.3.1] 1208.9.1 Separate Devices. The devices in Section 1208.9 shall be installed either as an integral part of the service or line pressure regulator or as separate units. Where separate overpressure protection devices are installed, they shall comply with Section 1208.9.2 through Section 1208.9.7. [NFPA 54:5.8.3.2]

1208.9.2 Construction and Installation. All overpressure protection devices shall meet the following requirements:

(1) Be constructed of materials so that the operation of the device is not impaired by corrosion of external parts by the atmosphere or of internal parts by the gas.

CRSC § 101-2017 High relevance — show source text

1| |PDI|PDI|PDI|PDI| |PDI G-101-2017|Testing and Rating Procedure for Hydro Mechanical Grease
Interceptors with Appendix of Installation and Maintenance|DWV Components|Table 1009.1, 1014.1| |PDI G-102-2009|Testing and Certification for Grease Interceptors with FOG
Sensing and Alarm Devices|Certification|Table 1009.1, 1014.1| |PDI-WH 201-2017|Water Hammer Arresters|Water Supply
Components|609.11| |UL

|UL

|UL

|UL

| |UL 103-2010|Factory-Built Chimneys for Residential Type and Building
Heating Appliances (with revisions through September 24,
2021)|Fuel Gas, Appliances|509.5.1, 509.5.1.1| |UL 174-2004|Household Electric Storage Tank Water Heaters (with revisions
through December 16, 2021)|Appliances|Table 501.1(1)| |UL 263-2011|Fire Tests of Building Construction and Materials (with revisions
through August 5, 2021)|Miscellaneous|1404.3, 1405.3|

350 2025 CALIFORNIA PLUMBING CODE

REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
UL 378-2006	Draft Equipment (with revisions through September 17, 2013)	Fuel Gas, Appliances	509.3.3, 509.13, 509.14.1
UL 399-2017	Drinking Water Coolers (with revisions through July 31, 2020)	Fixtures	415.1
UL 430-2015	Waste Disposers (with revisions through September 14, 2021)	Appliances	419.1
UL 441-2016	Gas Vents (with revisions through August 28, 2019)	Fuel Gas, Vents	509.1
UL 467-2013	Grounding and Bonding Equipment (with revisions through June 7, 2017)	Miscellaneous	1211.2.5
UL 499-2014	Electric Heating Appliances (with revisions through October 22, 2021)	Appliances	Table 501.1(1)
UL 641-2010	Type L Low-Temperature Venting Systems (with revisions through April 23, 2018)	Fuel Gas	509.1
UL 723-2018	Test for Surface Burning Characteristics of Building Materials	Miscellaneous	701.2(2), 903.1(2), 1101.4
UL 732-2018	Oil-Fired Storage Tank Water Heaters (with revisions through August 9, 2018)	Fuel Gas, Appliances	Table 501.1(1)
UL 749-2018	Household Dishwashers	Appliances	414.

Frequently asked questions

Do I need both CRSC certification and the Plumbing Code compliance to install an earthquake shutoff?

Yes. The CRSC identifies the acceptable device standards and requires that installation comply with the California Plumbing Code; both apply. See § 12‑16‑101.1 and § 1211.8.

Are excess flow valves required to be listed?

Yes. Excess flow valves must be listed to ANSI Z21.93/CSA 6.30 or ASTM F2138 where applicable, and sized/installed per manufacturer and § 1209.1.

If a local ordinance requires earthquake valves, can I use any device labeled "seismic"?

No — for public buildings under mandatory installation you must use devices certified by the State Architect; uncertified devices are prohibited where the ordinance mandates certification. See § 1211.8.

Does an automatic shutoff used for overpressure protection need manual reset?

Yes. An automatic shutoff used as overpressure protection must be designed to remain closed until manually reset, per § 1208.9(4).

Where do I find the exact valve listing and selection requirements?

Refer to the California Plumbing Code selection rules and tables (for example § 1208.13 and related tables) and the referenced standards table that links ANSI Z21.93 to § 1209.1.

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How do the 12‑16 standards reference external standards (ASTM, ANSI, ASCE, CSA)?

Where are the 12‑16 series chapters and table of contents entries in the CRSC?

Installation, certification and related referenced standards (12‑16 series)

California Referenced Standards Code

What plumbing code cross‑references apply when installing gas shutoff devices in the 12‑16 series?

What the code requires — 2-4 sentences

Requirements in detail

Exceptions & special cases

Common mistakes

Worked example — concrete scenario

Related provisions — quick list

Code references

12-16-1 ENGINEERING REGULATIONS—QUALITY AND

12-16-2 ENGINEERING REGULATIONS—QUALITY AND

12-31C RADIATION SHIELDING STANDARDS

12-31C RADIATION SHIELDING STANDARDS

12-71 AIR FILTERS

12-16-1 ENGINEERING REGULATIONS—QUALITY AND

12-16-2 ENGINEERING REGULATIONS—QUALITY AND

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