Over-pressure protection system

Details Over-pressure protection system Over-pressure protection system

2005-04-19

2005-04-19

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

C137S461000, C137S557000, C073S168000

Reexamination Certificate

active

06880567

ABSTRACT:
An over-pressure protection system having a conduit section extending between a pressure reduction valve and a low-pressure fluid handling system, a shut-off valve provided with an actuator arranged in the conduit section, pressure sensors arranged one on either side of the shut-off valve in the conduit section, a safety control system that communicates with the actuator and the pressure sensors which produces a signal when it detects a high pressure in the conduit section, and a self-diagnostic system for checking the shut-off valve and the pressure sensors that communicates with the actuator, the pressure sensors and the safety control system, which self-diagnostic system produces a signal when it detects a failure in either the shut-off valve or the pressure sensors or both.

REFERENCES:
patent: 3844310 (1974-10-01), Brindisi
patent: 4572237 (1986-02-01), Thompson
patent: 5329465 (1994-07-01), Arcella et al.
patent: 5836348 (1998-11-01), Ostand
patent: 6123093 (2000-09-01), D'Antonio, et al.
patent: 6131609 (2000-10-01), Metso et al.
patent: 2062812 (1981-05-01), None
International Search Report dated Feb. 12, 2003.

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