Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Leak detection
Patent
1996-04-10
1997-07-29
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Leak detection
376247, 376280, G21C 1700
Patent
active
056527756
ABSTRACT:
The reactor vessel is placed inside a reactor pit having a vertical axis and including a bottom (5) arranged below and aligned with the vessel bottom head. In the event of meltdown of the reactor core as a result of accidental operation of the nuclear reactor, which may lead to perforation of the vessel bottom head, the temperature at a plurality of points (14) distributed over the surface (8) of the reactor pit bottom (5) in line with the vessel bottom head is measured continuously. Optical measurement of the temperatures on the bottom (5) of the reactor pit is preferably carried out by using a plurality of optical fibers (10) arranged on the reactor pit bottom (5), along the length of which Bragg gratings (14), each capable of reflecting a light signal having a particular wavelength, are distributed.
REFERENCES:
patent: 4449403 (1984-05-01), McQueen
patent: 5465280 (1995-11-01), Wedellsborg
Framatome
Wasil Daniel D.
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