Chapter - 1
MNL000440.doc
Revision 00
09/19/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
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1.13
Equipment Safety Features
Dependent on the design of your specific system, the following safety features may
be incorporated into the GASGUARD system:
•
Warning labels and gas identification labels are placed on the outside door of
each cabinet (see Section 1.12).
•
The gas cabinet has a self-closing cabinet door with locking mechanism.
•
A sprinkler head is installed in the source system, unless water is a hazard with
the specific gas used in the source system.
•
Cabinet doors have self-closing 1/4" thick wire reinforced safety glass
windows.
•
Fault and Shutdown alarms notify the operator through the alarm horn, light
and alarm label on the controller of a problem with the system. In addition, the
Shutdown alarms close all pneumatic valves and abort the controller program.
•
Excess flow sensors are installed, when required, to shut off the flow of gas in
the event of downstream equipment failure.
•
An exhaust monitor verifies ventilation through the cabinet.
•
The system may utilize a positive shutoff regulator. This type of regulator is
designed to close tightly if the pressure builds above the setpoint because the
diaphragm is mechanically connected to the valve poppet. Be aware that the
regulator may leak if the regulator seat is damaged, corroded or soiled.