Chapter - 1
MNL000440.doc
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09/19/2016
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A flow restricting orifice may be installed in the cylinder valve. This flow
restricting orifice significantly reduces the flow of gas in the event of a failure
in the downstream equipment.
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An ultraviolet infrared (UVIR) detector may be installed for pyrophoric gas
systems. A temperature switch is required in lieu of a UVIR detector for
pyrophoric gas systems.
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A temperature switch is required for flammable gas systems.
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Pressure relief valves may be incorporated into the design to prevent
overpressurization of the process line and downstream equipment and to
protect the inert purge system.
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Manual operation access is denied during the presence of a shutdown alarm.
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An "EMERGENCY STOP" pushbutton is located on the controller panel.
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A password security system prevents unauthorized personnel to operate or
modify the GASGUARD controller menu.