Safety valve testing

Data processing: measuring – calibrating – or testing – Calibration or correction system – Pressure

Reexamination Certificate

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Details

C702S033000, C702S034000, C702S035000, C702S113000, C073S009000, C073S168000, C073S04050R

Reexamination Certificate

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07869971

ABSTRACT:
A method of measuring the condition of a safety valve includes measuring a condition parameter that varies with the sealing force of the valve. The condition parameter may be determined from in-line measurements, such as measurements of a pressure pso at which the valve will open and a pressure psl at which the valve will leak.

REFERENCES:
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patent: 4566310 (1986-01-01), Cohen et al.
patent: 6283138 (2001-09-01), Friend et al.
patent: 2001/0029933 (2001-10-01), Fabre
patent: 2002/0029808 (2002-03-01), Friend et al.
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patent: 2360078 (2001-09-01), None
“Patent Acts 1977: Search Report under Section 17(5)” Sep. 26, 2005 for Application No. GB0510860.0.
Stolte, J: “Einbau and Proefung Von Federbelasteten Sicherheitsventilen” VBG Kraftwerkstechnik GmbH, vol. 73, No. 1 Jan. 1993, pp. 54-59.

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