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Application

2001131929/06, 2001-11-27

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Start date

2001-11-27

(22)

Actual filing date

2001-11-27

(45)

Published

2004-02-20

(72)

Inventor

Korchagin Ju.P.Kudrjavtsev B.K.Reznik A.A.Dmitriev S.A.Zinin A.V.Khubetsov S.B.Peregudov N.N.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Po Ehkspluatatsii Aehs"

METHOD FOR DECONTAMINATING SPENT ION-EXCHANGE RESIN DISPOSED IN RADIOACTIVE WASTE STORAGE TANK AT NUCLEAR POWER STATION Russian patent published in 2004 - IPC

Abstract RU 2224310 C2

FIELD: nuclear power engineering; treatment of ion-exchange resins. SUBSTANCE: decontaminating solution incorporating sodium salt and acid is passed upon heating to 30 - 100 C through spent cation-exchange resin. Strippant obtained is then passed through ferrocyanide sorbent filter for decontamination, and solution is alkalized to pH = 9.5 to 11.0 to enable additional precipitation of bivalent and trivalent radionuclides from strippant. EFFECT: enhanced efficiency of radionuclide desorption from cation-exchange resin; improved cleaning of strippant from activated corrosion products. 2 cl, 1 dwg

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RU 2 224 310 C2

Authors

Korchagin Ju.P.

Kudrjavtsev B.K.

Reznik A.A.

Dmitriev S.A.

Zinin A.V.

Khubetsov S.B.

Peregudov N.N.

Dates

2004-02-20—Published

2001-11-27—Filed