Ensuring Overpressure Protection in Hydrostatic or Pneumatic Pressure Tests
Rinoj Rajan, L6σBB,MEngNZ,MIEAust,MIET, MIIRSM, MIMMM, PCQI, PMP?, RMP?
Mechanical Engineer ?? Strategic Quality & Project Leader ?? QHSE ? Inspection ? Expediting ? Project MGMT. ??? CSWIP 3.2 ??? BGAS Grade 2 ??? FROSIO Level III (Coating) ??? Lead Auditor - API & ISO (QMS ? EMS ? OHSMS)
How is ???????????????????????? ???????????????????? Ensured in ?????????????????????? or ?????????????????? ???????????????? ???????????
? In hydrostatic ???? ?????????????????? pressure tests, the ???????????????? ???????????? ?????????????? (??????s) designed to ?????????????? equipment during ???????????? ?????????????????? are ???????????? ?????????????? or ??????????????, as they are set to ???????? ?????????? the test pressure.
? To ensure the ???????????? of both equipment and personnel during these tests, ?????????????????????? ???????????????? ???????????? ?????????????? specifically designed for the testing conditions should be used.
???? ???????? ?????? ???????????????? ???????????? ?????? ?????? ???? ?????? ???????????? ????????????????
Let's denote the ???????? ???????????????? as ???? and the ?????? ???????????????? of the PRD as ????.
??) ?????????????????????? ???????? ????????????????:??????? ?????????????????
a) ?????????? ?????????????????????? ???????????????? ???????????? (???????? ???????? ???????? ????????, ????-????)
???? ????=??/?? ????
b) ????-?????????????? ?????????????????? (Pressure Vessel or Piping): ???????? ???????? ?????????????? ??????)
???? ????=?????? ???????????? ???? (??.?????? , ????+???? ??????) [(1.1???? , ????+345 ??????)]
??) ?????????????????? ???????? ???????????????? : ?????? ?????????????????
?a) ?????????? ?????????????????????? ???????????????? ???????????? (???????? ???????? ???????? ????????, ????-??????)
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?? ? ???? ???????????????????? ????????????? ?????????????????????? ??????????????????
??b) ????-?????????????? ?????????????????? (Pressure Vessel or Piping): ???????? ???????? ?????????????? ??????)
???? ????=?????? ???????????? ???? (??.?????? , ????+???? ??????) [(1.1???? , ????+70 ??????)]
? ??????????????:?
The ?????????? ???????????????? used in hydrostatic or pneumatic tests should have a range (maximum reading) , denoted as ???? , that satisfies the following equation:
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??/?? ???? ≤ ???? ≤ ??????
It is desirable,?????=??????
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