Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 331

shall be protected from physical damage using the vehicle
structure, valve protectors, or a suitable metal shield. The cylinder
shall also be protected from accidental contact with overhead
electrical wiring by metallic or non-metallic covers.
e. Containers that are installed behind a rear axle of a CNG vehicle
shall be installed transversely.
Exception: Containers shall be permitted to be installed in other
orientations where the container valve and fittings are located at
the end of the container most protected from a source of impact.
f.
Each container rack shall be secured to the vehicle body, bed, or
frame to prevent damage from road hazards, slippage, loosening,
or rotation using a method capable of withstanding a static force
in the six principal directions of eight times the weight of a fully
pressurized container(s).
The container weight shall not be
supported by outlet valves, manifolds, or other fuel connections.
g. Each fuel supply container in the rack shall be secured to its cradle
in such a manner that it is capable of withstanding a static force
applied in the six principal directions of eight times the weight of
the fully pressurized container with a maximum displacement of
thirteen millimeters (13 mm).
h. Fuel supply containers located less than two hundred millimeters
(200 mm) from the exhaust system shall be shielded against direct
heat.
i. The mounting system shall minimize fretting corrosion between the
container and the mounting system. A resilient gasket that does not
retain water shall be installed between metal clamping bands and
their supports and container. The resilient gasket shall provide
insulation to protect clamping bands from galvanic corrosion in
contact with carbon fiber containers.
j. Containers located in a vehicle compartment capable of
accumulating natural gas shall install a pressure relief device
vented to the outside through a metallic tube or hose and shall be
maintained to prevent it from being blocked by debris.
k. The minimum clearance from the road to a container, its housing,
or fittings, whichever is lowest where the container is installed below
the frame and between the axles of a CNG vehicle, with the
vehicle loaded to its gross weight rating, shall be in accordance
with the Table 27.
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