Taylor-Wharton High Capacity GST Storage Tanks User Manual
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Main TANK PRESSURE RELIEF VALVES that leak or fail to operate at the set pressure should
be replaced immediately. Repair and recalibration of these valves should only be done by
experienced personnel with proper equipment. Return the valves to the manufacturer or to an
ASME approved repair station for overhaul or recalibration. In certain cases these valves shall be
tested every five years per CGA S-1.3, section 9, “Pressure Relief Device Standards Part 3 –
Stationary Storage Containers For Compressed Gases”.
Replace THERMAL EXPANSION RELIEF VALVES when leakage or improper functioning
occurs. Do not attempt to repair or reseat these components since they are of the throw-away type.
PRESSURE AND LIQUID LEVEL GAUGES
The major cause of malfunctioning tank PRESSURE GAUGE, INNER VESSEL, or LIQUID
LEVEL GAUGE is an open EQUALIZATION VALVE or leakage in the gauge lines. Refer to the
Trouble-Remedy Guide in this manual for maintenance procedure. If the problem is not readily
corrected, replace the gauge with a spare. Return the defective gauge to the manufacturer for repair.
Include a description of the difficulty encountered.