Check valve test method using truncated accumulator blowdown

Details Check valve test method using truncated accumulator blowdown Check valve test method using truncated accumulator blowdown

1986-11-06

1987-09-22

Frankfort, Charles

Measuring and testing

Blower, pump, and hydraulic equipment

G01M 1900

Patent

active

046946934

ABSTRACT:
A method for testing a normally closed check valve connected in series with an isolation valve at the outlet of a passive injection system includes adjusting pressure upstream and downstream of the check and isolation valves to an upstream pressure higher than the downstream pressure and then opening and closing the isolation valve. In order to verify proper operation of the check valve, a preoperational test is performed to provide base line data and acceptance criteria. In a typical passive injection system having an accumulator tank, pressure and level changes of liquid in the accumulator tank are recorded during the opening and closing of the isolation valve. The recorded measurements of pressure and level during each test of the check valve are compared with the acceptance criteria to determine whether the check valve operates properly.

REFERENCES:
patent: 3485082 (1969-12-01), Myers
patent: 3819476 (1974-06-01), Pocock et al.
patent: 4389888 (1983-06-01), Morooka
patent: 4473528 (1984-09-01), Kleimola
patent: 4515012 (1985-05-01), Jenkins et al.
patent: 4548067 (1985-10-01), Cox
U.S. Nuclear Regulatory Commission, Regulatory Guide, Sep. 1975, pp. P.03-P.05, Regulatory Guide 1.79 (Office of Standards Development), "Preoperational Testing of Emergency Core Cooling Systems for Pressurized Water Reactors".

Affiliated with

Also associated with

Rating

Check valve test method using truncated accumulator blowdown does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve test method using truncated accumulator blowdown, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve test method using truncated accumulator blowdown will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2051831