Cover device for jet pumps installed in nuclear power plant vessels

Patent No. 8,675,803

Issued: March 18, 2014
Filed: April 9, 2008
PCT Filed: April 09, 2008
PCT No.: PCT/ES2008/070067
371(c)(1),(2),(4) Date: December 23, 2010
PCT Pub. No.: WO2009/125028
PCT Pub. Date: October 15, 2009
Term Extension: 679 days

Inventors: Izquierdo Mendoza; Jose Antonio (Madrid, ES), Marti Gomez; Miguel (Madrid, ES), Cantos Tejedor; Carlos (Madrid, ES), Argiles; Angel (Madrid, ES), Pomares Martinez; Francisco (Madrid, ES), Vilanova; Jose (Madrid, ES), Vidondo Gil; Alberto (Madrid, ES), Tome De La Concepcion; Jose (Madrid, ES), Gavilan Moreno; Carlos (Madrid, ES)
Assignee: Iberdrola, S.A (Madrid, ES)

The invention relates to a plug device for jet pumps installed in nuclear power plant vessels, which comprises two covers (1-2) that form two independent plug units, one fitted on the even pump, which incorporates two plugs (6), and the other on the odd pump of each jet pump assembly, which incorporates three plugs (6), both mounted on a common base (3) at the end of respective arms (4), articulated in the central area, which are actuated by mechanical or hydropneumatic means. The plugs may be blind, in which case they are used to seal the five outlets of the nozzle of the jet pump, or channeled, being used to close the decontamination circuit of the recirculation loops, preventing the cleaning solution from being dispersed in the reactor.

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