Rate-of-Drop Test Kit0 pages

Rate-of-Drop Test Kit The Gevalco "Rate-of-Drop Test Kit" is used to calibrate and simulate various pipeline operating scnarios in order to test automation control stratgies. Supplied in a portable self-contained enclosure, the R.OD. test kit is easily connected to the control system in the lield. Quick-disconnect ports, and pr驩cision gauges are included to measure the pipeline pressure and various pressures within the control module. The R.O.D. test kit is also used to calibrate the trip points (or the Gevalco "Line Break*', "Station Bypass\ and "Emergency g,^ Shutdown" control modules Various emergency scnarios can be simulated, under live conditions, to test control action without inadvertently causing a shutdown. Utilizing the R.O.D. test kit to calibrate and test control modules i ensures the valve activ⩢tes when, and only when desired. When calibrating and testing the Gevalco "Line Break" module, the R.O.D. test kit monitors the pressure levels in the pipeline, the pressure level in the rfrence tank, and the differential pressure across the timing orifice used to d驩termine the rate-of-drop trip point Utilizing the "Line Break" calibration charts, the setpoint of the differential switching valve can be tested against simulated rates of pressure drop to obtain an exact trip point. As a standard, the *Line Break" control module is provided with test ports and isolation valves for easy connection to the R.O.D. test kit. The R,O.D. test kit can also be used to calibrate the "Station Bypass" and "Bi-Directional Station Bypass" control modules. The test ports provided with the "Station Bypass' control module connect the test kit in parallel with the differential pressure sensing lines from the suclion and discharge of the compressor station. Utilizing the prcision differential gauge, and the digital pressure gauge. a station failure can be simulated and the exact trip point calibrated. ^SHSffa'Gevalco control modules with pressure shutdown functions, such as, the "Low ■ffi^S颎DB^Eniergency Shutdown'' and the "High Pressure Emergency Shutdown" module can -l0~b⣣.<caUbrat6d and tested with the R.CXD. test kit.