What is PRV Seat leakage (tightness) test?
PRV Testing – Seat Tightness Test (Leakage Test); Seat Tightness Test or Leakage Test is a leak test between Seat and Disc of Pressure Relief Valves (PRV) which will be done after Pop test by maintaining PRV ‘s Inlet pressure at 90% of Set Pressure and counting bubbles. Caused by air or nitrogen leak through Seat and Disc come out. PRV Testing – Example of Seat Tightness Test (Leakage Test); An example of setting up equipment for the Seat Tightness Test or Leakage Test of Pressure Relief Valves (PRV) PRV Testing – Acceptance Criteria for Seat Tightness Test (Leakage Test); In … Continue reading What is PRV Seat leakage (tightness) test?
What is PRV pop test? (Popping test)
PRV Testing – Pop Test; “Pop Test” is a set pressure test of Pressure Relief Valve (PRV) by compressing the pressure into the inlet of PRV until Valve opens. The pressure that causes Valve to open (Pressure) will be compared with the Set pressure of the PRV to see how Valve open pressure on the set or not. See What is Set Pressure, and CDTP at shop test: What is Cold Differential Test Pressure (CDTP) PRV Testing – Pop Test Acceptance Criteria ASME VIII; Acceptance Criteria for Pop Test or Set Pressure Test according to ASME Section VIII and Section … Continue reading What is PRV pop test? (Popping test)
What is Backscatter on Radiograhpic (RT)
RT – Backscatter; The backscatter is the radiation that reflects the obstacles or the background and falls onto the back of the film during radiation tests. (Radiographic Testing, RT). The Backscatter will reduce the contrast and sharpness of the RT film, which may not be visible. Discontinuity or defects that appear on the film. Therefore , too much backscatter is not acceptable for RT. RT – Backscatter Detection; How to detect a backscatter or the reflected rays behind the film According to ASME Section V regulations, this can be done by placing the lead letter “B” on the back of the … Continue reading What is Backscatter on Radiograhpic (RT)
What is Cold Differential Test Pressure (CDTP)
PRV – Cold Differential Test Pressure; The Cold Differential Test Pressure (CDTP) of the Pressure Relief Valve (PRV) is a set pressure that is adjusted to be used for the PRV (Bench Testing). Because in actual use conditions, the PRV may be affected by the Backpressure. And the operating temperature. Therefore, when testing at room temperature and without backpressure, it is necessary to adjust the set pressure to compensate for these factors. In other words, the shop test pressure = CDTP. PRV – Cold Differential Test Pressure (Example 1); An example of a Cold Differential Test Pressure (CDTP) with a backpressure (superimposed) effect. In this case, CDTP is equal to Set Pressure minus Backpressure. Refer to: What … Continue reading What is Cold Differential Test Pressure (CDTP)
Steam Trap – Inverted Bucket Type
Steam Trap – Inverted Bucket Type; Steam Trap Series Inverted Bucket used to float up into the Inverted Bucket volume water Condensate and Lever in turn – off Valve drainage Condensate. Continue reading Steam Trap – Inverted Bucket Type
Steam Trap – Free Float Type
Steam Trap – Free Float Type; Steam Trap Series Free Float principle of ball ( Ball, the Float) to turn – off Valve drain condensate. Continue reading Steam Trap – Free Float Type
Steam Trap – Lever Float Type
Steam Trap – Lever Float Type; Steam Trap Series Lever Float principle of floats and levers ( Ball, the Float & Lever Bushing) , in turn – off Valve drain condensate. Continue reading Steam Trap – Lever Float Type
Steam Trap – Thermostatic Disc Type
Steam Trap – Thermostatic Disc Type; Steam Trap and Thermostatic Disc principle: Thermostatic of lifting the Disc – up – down to turn – off Valve. Steam Trap – Thermostatic Disc Working (HP/LP Steam); Operation ( open – closed ) of Steam Trap and Thermostatic Disc System High Pressure Steam/ Low Pressure Steam as below sample: Continue reading Steam Trap – Thermostatic Disc Type
What is Steam Trap
What is Steam Trap ?; Steam Trap is a special type of valve used in steam systems to help optimize the heat exchange process of the steam system. Every type of Steam Trap has 3 important functions which are 1. Open to vent Condensate 2. Open to ventilate air and non-condensing gas 3. Close to prevent steam leakage. Continue reading What is Steam Trap
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