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mounted equipment including radiator fans, coolant pumps, ventilation fans, lights, <br />and controls as necessary. <br />F. The system shall be designed to accommodate up to 6 starts per hour without <br />damage to the motor. The control system shall shut down the compressor system <br />upon excessive starts and indicate the fault. <br />2.7 Gas Recovery System <br />A. The gas recovery system shall be designed to take the compressor blowdown gas and <br />store the gas in a captive tank for re -compression upon the next startup of the <br />compressor. <br />B. The captive tank shall be ASME-rated and have the necessary capacity and <br />working pressure to store the blowdown gas without relieving gas to atmosphere <br />or to the station suction line. The captive tank shall have full capacity relief <br />protection and shall be located within the compressor enclosure. <br />2.8 Compressor Controls and Instrumentation <br />A. Acceptable Manufacturer: <br />1. Allen Bradley <br />2. Or approved equal <br />B. A local control system, instrumentation panel, and communication panel shall be <br />furnished and fully integrated into the compressor system. <br />C. All controls and instrumentation shall comply with the NEC requirements for class <br />I, Division 2, Group D, or be classified intrinsically safe, as dictated by code. <br />D. All pressure gauges and dial thermometers shall be stainless steel. No sensing <br />element containing brass or copper shall be permitted. Pressure gauges shall be <br />liquid -filled and have rear blowout protection. <br />E. Each compressor shall have, as a minimum, the following control devices and <br />indicators: <br />1. Compressor Shutdown Protection <br />High inlet pressure <br />Low inlet pressure <br />High discharge pressure <br />Low discharge pressure (w/time delay) <br />Low oil pressure or level <br />ESD shutdown <br />City of Santa Ana - RFP 20-095 <br />CNG Fuel Station: Design, Build, Operate and Maintain <br />20 <br />