Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 341

12. Testing
a. Piping, tubing and hose, and hose assemblies shall be leak tested
after assembly to prove them free from leaks at a pressure equal to
at least the normal service pressure of that portion of the system.
b. Pressure relief valves shall be tested at least every five (5) years.
13. Installation of Emergency Shutdown Equipment
a. A manually operated container valve shall be provided for each
DOT or TC storage cylinder. Each group of ASME storage vessels up
to a maximum combined capacity of two hundred eighty three
cubic meters (283 m 3 ) shall be provided with a manually operated
shutoff valve.
b. The fill line on a storage container shall be equipped with a
backflow check valve to prevent discharge of natural gas from the
container in case of the rupture of the line, hose, or fittings.
c. A manually operated shutoff valve shall be installed in a manifold
as close to a container or group of containers as practical.
d. Gas piping from an outdoor compressor or storage system into a
building shall be provided with shutoff valves located outside the
building.
e. An emergency manual shutdown device shall be provided at the
dispensing area and at a location remote from the dispensing
area. This device, when activated, shall shut off the power supply
and gas supply to the compressor and the dispenser.
f.
A breakaway device shall be installed at every dispensing point.
Such device shall be arranged to separate using a force not
greater than sixty-eight kilograms (68 kg) when applied in any
horizontal direction.
g. Control circuits shall be arranged so that, when an emergency
shutdown device is activated or electric power is cut off, systems
that shut down shall remain down until manually activated or reset
after a safe condition is restored.
h. Each line between a gas storage facility and a dispenser at a fast-
fill station shall have a valve that closes when one of the following
occurs:
i.
The power supply to the dispenser is cut off; or
ii. Any emergency shutdown device at the refueling station is
activated.
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