Valve Regulations - Marin County

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B) DEVICES: WHEN REQUIRED. An approved Seismic: Gas Shut-Off Device (motion sensitive) or approved Excess Flow Gas Shutoff Devices (non-motion sensitive) shall be installed:

1) In any new building construction (commercial, industrial or residential) containing gas piping for which a building permit is first issued on or after the effective date of the ordinance; or

2) In any existing residential, commercial or industrial building, when any addition or alteration Is made to the interior of a building that contains gas piping, and a building permit is required for said work; or

When any plumbing permit is issued for gas piping.

C) EXCEPTIONS.

1) Gas-Shut-Off Devices installed on a building prior to effective date of this ordinance, are exempt from the requirements of this section provided they remain installed on the building or structure and are maintained for the life of the building or structure.

2) Gas Shutoff Devices installed on a gas distribution system owned or operated by a public utility shall not be subject to the requirements of this chapter (Health & Safety. Code § 19201 (b)).

Installation of gas Shut-off devices is not required for building permits issued for minor and non-structural repairs such as re-roofing, window replacement, siding replacement, decks and any other minor permit as determined by the Chief Building Official.

D) DEVICES: LOCATION REQUIRED.

1) Seismic Gas Shutoff Devices shall be installed downstream of the gas utility meter or liquid petroleum tank on each fuel gas line where the gas line services a building and/or:

2) Excess Flow Gas-Shut-Off Devices shall be installed downstream of the gas utility meter or liquid petroleum tank on each fuel gas line where the gas line serves a building and at each gas appliance within a building.

E) GENERAL REQUIREMENTS. Gas-Shut-Off Devices installed either in compliance with this ordinance or voluntarily, with a permit issued on or after the effective date of this ordinance, shall comply with the following requirements:

1) Be installed in accordance with the manufacturers instructions.

2) In the case of Seismic Gas-Shut-Off Devices (motion sensitive) only, such devices must be mounted rigidly to the exterior of the building or structure containing the fuel gas piping. This requirement need not apply if the Building and Safety Division determines that the seismic gas shutoff device (motion sensitive) has been tested and listed for an alternate method of installation.

3) Seismic Gas-Shut-Off Devices shall be certified by the State Architect and be listed by an approved listing and testing agency such as IAS, IAMPO, UL or the office or the State Architect.

4) Have a thirty (30) year warranty which warrants that the valve or device is free from defect and will continue to properly operate for thirty (30) years from the date of installation.

Where Gas Shutoff Devices, are installed voluntarily or as required by this section, they shall be maintained for the life of the building or structure or be replaced with a valve or device complying with the requirements of this section.

F) LIST OF APPROVED VALVES AND DEVICES. The Building and Safety Division of the Community Development Agency shall maintain a list of all Seismic Gas-Shut-Off Devices (motion sensitive) and Excess Flow Gas-Shut-off Devices (non-motion sensitive) which meet or exceed the requirements of devices certified by the Office of the State Architect for installation in the State of California and which comply with the standards and criteria set forth in Health and Safety Code section 19180 et seq, Including quality and design regulation for earthquake actuated automatic gas shutoff systems (see 24 Cal. Code Regs. Ch. 12-16-1).

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