Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Flux monitoring
Patent
1994-07-21
1996-02-06
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Flux monitoring
376247, 376246, 376258, 376216, G21C 1700
Patent
active
054901847
ABSTRACT:
Excore detector measurements are used to generate on-line absolute reactor power in a pressurized water reactor (PWR) by calibrating detector current measurements to the reactor thermal power calculation made at a base time early in reactor cycle while the thermal reactor power measurement is still accurate. Measurements are also made at the base time of the three-dimensional core power distribution and the core inlet temperature. Present core power measurements are then made by measuring the present excore detector current, the most recent three-dimensional core power distribution and the present core inlet temperature. The present core power is then calculated as the ratio of the present detector current to the detector current at the base time multiplied by the reactor thermal power measurement at the base time. The product is then corrected for changes in three-dimensional power distribution as a function of the difference between the three-dimensional core power distribution at the base time and a most recent three-dimensional core power distribution. The product is also corrected for changes in core inlet temperature by a correction factor which is an exponential term in which the difference between the present core inlet temperature and the core inlet temperature at the base time is multiplied by a constant. This constant is empirically determined at two different temperatures, preferably during start-up.
REFERENCES:
patent: 3219939 (1965-11-01), Vincent
patent: 4330367 (1982-05-01), Musick
patent: 4333797 (1982-06-01), Nishizawa
patent: 4637910 (1987-01-01), Impink, Jr.
patent: 4642213 (1987-02-01), Impink, Jr.
patent: 4711753 (1987-12-01), Impink, Jr.
patent: 4774049 (1988-09-01), Impink, Jr. et al.
patent: 4774050 (1988-09-01), Impink, Jr.
patent: 4839134 (1989-06-01), Impink, Jr. et al.
patent: 4944035 (1990-07-01), Aagardl
patent: 5024801 (1991-06-01), Impink, Jr. et al.
patent: 5158738 (1992-10-01), Trouble et al.
Chelliah Meena
Walsh Donald P.
Westinghouse Electric Corporation
LandOfFree
Method and a system for accurately calculating PWR power from ex does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and a system for accurately calculating PWR power from ex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and a system for accurately calculating PWR power from ex will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2180771