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Valve
Regulations - Marin County
ORDINANCE NO. 3322
ORDINANCE OF THE MARIN COUNTY BOARD OF SUPERVISORS
ADDING SECTION 19.04.090 and 19.04.091 OF
THE MARIN COUNTY CODE RELATING TO BUILDING
REGULATIONS AND SEISMIC SAFETY, ANCHORING OF
LIQUID PETROLEUM GAS TANKS AND GAS SHUT-OFF
DEVICES.
THE BOARD OF SUPERVISORS OF THE COUNTY OF
MARIN DOES HEREBY ORDAIN AS FOLLOWS:
SECTION l. SUMMARY. This
ordinance ADDS SECTION 19.04.090 and 19.04.091
to the Marin County
Code to require the installation of Excess
Flow Gas Shutoff Devices (non-motion sensitive)
or Gas Shutoff Devices that are activated by
motion. These devices are to be installed on
gas services downstream of the meter in new
construction and remodeling. Liquid petroleum
gas tanks are being required to be anchored.
This ordinance will be effective sixty (60)
days from the date it is passed. [Gov. Code § 25129].
SECTION ll GAS SHUT-0FF DEVICES. Section 19.04.090
is added to the Marin County Code to read:
19.04.090 GAS SHUTOFF DEVICES.
A) DEFINITIONS. For the purpose of this section
certain terms shall be defined as follows:
1) "Downstream of Gas Utility Meter" shall
refer to all customer-owned gas piping or in
liquid petroleum gas installations shall refer
to the gas piping on the structure side of
the gas regulator.
2) "Residential Building" shall
mean any single family dwelling, duplex, apartment
building, condominium building, townhouse building,
lodging house, congregate residence, hotel,
or motel.
3) "Excess Flow Gas Shutoff Device" shall
mean those valves or devices that are not actuated
by motion, but are activated by significant
gas leaks or overpressure surges, which can
occur when pipes rupture inside the structure.
The design of the device shall provide a proven
method to automatically provide for expedient
and safe gas shutoff in an emergency. The design
of the device shall provide a capability for
ease of consumer or owner resetting in a safe
manner. The device shall be certified by the
State Architect or the operational and functional
design of the device shall meet or exceed the
device certified by the Office of the State
Architect. The determination of whether the
operational and functional design of the device
is at least equal to the device certified by
the State Architect may be made by one of the
following: the Independent Laboratory of the
International Approval Services (IAS), Underwriter's
Laboratory (UL), International Association
of Plumbing and Mechanical Officials (IAPMO),
or other recognized listing and testing agent.
4) "Seismic Gas Shutoff Device" shall
mean a system consisting of a seismic sensing
means and actuating means designed to actuate
automatically a companion gas shutoff means
installed in a gas piping system in order to
shut off the gas downstream of the location
of the gas shutoff means in the event of a
severe seismic disturbance. The system may
consist of separable components or may incorporate
all functions in a single body. The device
shall be certified by the State Architect,
and the operational and functional design of
the device shall meet or exceed the device
certified by the Office of the State Architect.
The determination of whether the operational
and functional design of the device is at least
equal to the device certified by the State
Architect may be mode by one of the following:
the independent Laboratory of the International
Approval Services (IAS), Underwriters Laboratory
(UL), International Association of Plumbing
and Mechanical Officials (IAPMO), Office of
the State Architect or any other recognized
listing and testing agency.
5) "Upstream of Gas Utility Meter" shall
refer to all gas piping installed by the utility
up to and including the meter and the utility's
bypass tee at the connection to the customer
owned piping.
6) "Gas Shutoff Device" as
used in this Ordinance, shall refer to either
a
Seismic Gas Shutoff Device or Excess Flow Gas-Shut-Off
Device.
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