Device for cleaning the guide tubes of the means of measuring ne

Details Device for cleaning the guide tubes of the means of measuring ne Device for cleaning the guide tubes of the means of measuring ne

1985-11-06

1988-01-19

Gron, Teddy S.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Optics

376249, 376310, 376313, 134169C, G21C 1708, G21C 1900

Patent

active

047203692

ABSTRACT:
Device for cleaning the instrumentation guide tubes (5) of a pressurized-water nuclear reactor, comprising a pump (18) for injecting demineralized water under pressure into the tubes (5) and an assembly (15, 20, 21, 22) for recovering the radioactive waste. The assembly (15) can take up a position above each of the passages (7) located in the vessel bottom (2) and through which the guide tubes (5) open into the vessel (1). The assembly is put in place at the end of each of the passages (7) in succession, without the need to remove the lower internal equipment (9, 40) of the reactor. All operations are controlled from the platform (17) of the reactor fuelling machine. The invention is used for the maintenance of pressurized-water nuclear reactors during refuelling .

REFERENCES:
patent: 4309583 (1982-01-01), Krauss et al.
patent: 4313793 (1982-02-01), Klumb et al.
patent: 4483205 (1984-11-01), Bellaiche et al.

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