Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 332

Table 27: CONTAINER (AND CONTAINER HOUSING
AND FITTING) ROAD CLEARANCE
l.
Vehicle Wheel Base Minimum Road Clearance
3230 mm
> 3230 mm 180 mm
230 mm
The venting system for the discharge of pressure relief devices
(pressure relief device channels) shall be constructed of metallic
tubing with threaded compression, or flare fittings and shall be
secured at the outer end. It shall not exit into a wheel well nor
restrict the operation of a container pressure relief device or
pressure relief device channel. It shall also be protected by caps,
covers, or other means to keep water, dirt, and insects from
collecting in the lines, but shall not restrict the flow of gas.
m. Fuel lines shall be mounted, braced, and supported to minimize
vibration and shall be protected against damage, corrosion, or
breakage due to strain or wear. A fuel line shall be installed,
supported, protected, and secured in such a manner as to
minimize the possibility of damage, corrosion, or breakage due to
expansion, contraction, vibration, strains, or wear and to preclude
any loosening while in operation. Where a fuel supply container is
located on a trailer, the fuel supply line shall contain an emergency
breakaway device designed to retain CNG on both sides of the
breakaway point.
n. Every cylinder shall be equipped with either a manual valve or a
normally closed, remotely actuated shutoff valve connected
directly to the cylinder.
Remotely actuated valves shall be
equipped to bleed the cylinder manually. In addition, a shutoff
valve shall be installed that allows isolation of the container(s) from
the remainder of the fuel system.
o. A valve that automatically prevents the flow of gaseous fuel to the
engine when the engine is not running, even if the ignition is
switched on, shall be provided in the system. Where multiple fuel
systems are installed on the vehicle, automatic valves shall be
provided, as necessary, to shut off the fuel system not being used.
p. The fuel system shall be equipped with a backflow check valve
that prevents the return flow of gas from the container(s) to the
filling connection.
q. A pressure gauge located inside the driver or passenger
compartment shall be installed in such a manner that no gas flows
through the gauge in the event of failure.
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