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2 069 900

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C1

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IPC

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Application

4891391/25, 1990-12-17

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Actual filing date

1990-12-17

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Published

1996-11-27

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Inventor

Ignatov V.A.Karzov G.P.Filimonov G.N.Tsukanov V.V.Grekova I.I.Orlova V.N.Zhuravlev Ju.M.Khodasevich A.A.Dragunov Ju.G.Fedorov V.G.Birjukov G.I.Egorov M.F.Il'In Ju.V.Sokolova S.G.Rogov M.F.

(73)

Holder

Tsentral'Nyj Nauchno-Issledovatel'Skij Institut Konstruktsionnykh Materialov

METHOD FOR MANUFACTURING PRESSURIZED-WATER REACTOR VESSEL Russian patent published in 1996 - IPC

Abstract RU 2069900 C1

FIELD: nuclear power engineering. SUBSTANCE: main part of reactor vessel is made from steel grades most suited to operating conditions. Vessel must be assembled of components made of different grades of steel: bottom and core shells are to be made of steel 15X2MFA affording long service life with respect to radiation embrittlement resistance while pipe connection section shells, of steel 15XNMFA noted for high brittle fracture resistance in thick blanks under emergency cooling conditions. These blanks made of different grades of steel should be welded together by using welding materials and methods affording flaw-free joint. Intermediate tempering is conducted after welding two different-steel parts under conditions used for steel less resistant to tempering. Final tempering is conducted under conditions suited for steel more resistant to tempering upon anticorrosion facing of welded joints of two different steels. EFFECT: improved quality of reactor vessel. 2 tbl

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RU 2 069 900 C1

Authors

Ignatov V.A.

Karzov G.P.

Filimonov G.N.

Tsukanov V.V.

Grekova I.I.

Orlova V.N.

Zhuravlev Ju.M.

Khodasevich A.A.

Dragunov Ju.G.

Fedorov V.G.

Birjukov G.I.

Egorov M.F.

Il'In Ju.V.

Sokolova S.G.

Rogov M.F.

Dates

1996-11-27—Published

1990-12-17—Filed

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