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18.104.22.168 High and Intermediate Pressure Zones
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Operation of an automatic crossover valve shall cause all compressors on the affected system to immediately stop in accordance with the following:
- Dedicated pressure-sensing devices located immediately adjacent to crossover valves shall be permitted as a means for determining operation of a valve.
- To ensure that the automatic crossover valve system provides a redundant means of stopping compressors in an overpressure condition, high pressure cutout sensors associated with compressors shall not be used as a basis for determining operation of a crossover valve.
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