Measuring and testing – With fluid pressure – Leakage
Patent
1980-10-03
1982-09-07
Levy, Stuart S.
Measuring and testing
With fluid pressure
Leakage
138104, G01M 328
Patent
active
043477330
ABSTRACT:
A blowout preventor test system utilizes a pipe nipple being threaded, for example, at both ends, and having a central bore through which fluid can be conveyed. At the central portion of the bore is a reduced orifice which constricts flow through the bore. Trapped through the walls of the nipple, on either side of the orifice, are instrumentation taps for attaching a differential pressure recording device having dual pins and a recorder chart. To ensure during testing of the BOP stack that each and every ram on a BOP or blowout preventor stack is properly tested, the orifice within the test nipple provides a restriction in flow which will be apparent from an inspection of the recorder chart. Different readings of pressure drop are produced by the test pin if in fact on each ram, the BOP stack is pressurized and exhausted. Thus, there is provided a means for the inspector to know whether or not each and every ram is inspected.
REFERENCES:
patent: 3733903 (1973-05-01), Halmi
patent: 3897824 (1975-08-01), Fisher
patent: 4018276 (1977-04-01), Bode
Levy Stuart S.
Roskos Joseph W.
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