Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 342

i. A fast-closing, “quarter turn” manual shutoff valve shall be
provided at a fast-fill station upstream of the breakaway device,
readily accessible to the person dispensing natural gas.
j. A self-closing valve shall be provided on the inlet of the compressor
that shuts off the gas supply to the compressor.
14. Installation of Electrical Equipment
Fixed electrical equipment and wiring, within areas specified in Table
28 below, shall comply with same table and shall be installed in
accordance with NFPA 70, National Electrical Code®.
Electrical equipment on internal combustion engines shall be installed
in accordance with NFPA 37, Standard for the Installation and Use of
Stationary Combustion Engines and Gas Turbines.
Table 28: ELECTRICAL INSTALLATIONS IN CNG SERVICE STATIONS
Location
Division
or Zone
Extent of Classified Area
Containers
(other
than
mounted
fuel
supply
2
Within 3 m of container
containers)
Area containing compression and ancillary equipment
Outdoors
2
Up to 4.6 m from equipment
Indoors
2
Up to 4.6 m from equipment
Dispensing equipment
Outdoors
1
Inside the dispenser enclosure
Outdoors
2
From 0 to 1.5 m from the dispenser
Indoors
1
Inside the dispenser enclosure
Entire
room,
with
adequate
Indoors
2
ventilation
Outdoors
Discharge from relief valves
1.5 m in all directions from the point
1
or vents
source
Beyond 1.5 m but within 4.6 m in all
2
directions from point of discharge
Valves, flanges of screwed
None
Unclassified
fittings
Discharge from relief valves
within 15 degrees of the line of
1
4.6 m
discharge
Exception: Listed dispensers shall be permitted to be installed using classified
areas in accordance with the terms of the listing.
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