The Paton Welding Journal, 2005, №10

2005 №10 (07)

2005 №10 (09)

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The Paton Welding Journal, 2005, #10, 39-45 pages

To the problem of selection of the technology for welding elements of MCP Dn850 in replacement of steam generators PGV-1000M at NPP

A.K. Tsaryuk¹, V.Yu. Skulsky¹, V.V. Volkov¹, A.I. Byvalkevich², V.V. Podiachev², N.A. Ivanov², N.V. Nemlej³, A.P. Miroshnichenko³, A.V. Bazhukov3

¹E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²Pilot Enterprise «Atomremontservis», National Atomic Power Generation Company «Energoatom», Slavutich, Ukraine
³Pilot Enterprise «Yuzhno-Ukrainskaya» NPP, National Atomic Power Generation Company «Energoatom», Yuzhnoukrainsk, Ukraine

Abstract
It is recommended to use the tested and certified method of automatic argon-arc welding with 0.8-0.9 mm filler wire, instead of manual welding, to produce sound joints between elements of the main circulation piping and steam generator branch pipes. The suggested process allows reduction in labour consumption and welding operation cycle, provides high and consistent quality of welded joints, and makes it possible to decrease dose of the radiation effect on personnel performing welding operations.
Keywords: arc welding, piping, steam generator, welding technology, non-consumable electrode, welding wire, shielding gas, chemical composition, mechanical properties

References

1. Kharchenko, V.V., Stepanov, G.V., Romanov, S.V. et al. (2004) Some actual problems of evaluation of strength and life of critical equipment components of NPP in heat-force loading. Problemy Prochnosti, 1, 140−146.
2. Melekhov, R.K., Pokhmursky, V.I. (2003) Structural materials of power generation equipment. Kyiv: Naukova Dumka.
3. Kuran, R.I., Tsyba, V.I., Tsaryuk, A.K. (2004) Heat treatment of welded joints of main circulation piping Dn 850 in replacement of steam generators PGV-1000M at the Yuzhno-Ukrainskaya NPP. Svarshchik, 1, 32−34.
4. Belkin, S.A., Ivanova, I.V., Borisenko, M.M. et al. (1992) Properties of welded joints in NPP main circulation loop piping Dn 850 made by automatic argon-arc welding. Energet. Stroitelstvo, 5, 50−55.
5. (1990) PNAE G-7-008-89: Rules of arrangement and safe operation of equipment and piping at nuclear power plants. Moscow: Energoatomizdat.
6. (1990) PNAE G-7-010-89: Equipment and piping of nuclear power plants. Welded joints and deposited beads. Monitoring rules. Moscow: Energoatomizdat.
7. (1990) PNAE G-7-009-89: Equipment and piping of nuclear power plants. Welding and surfacing. Main provisions. Moscow: Energoatomizdat.
8. Poloskov, S.I., Bukarov, V.A., Ishchenko, Yu.S. (2003) Peculiarities of groove filling (deposition) in automatic orbital position butt welding. Svarochn. Proizvodstvo, 8, 3−11.
9. Poloskov, S.I., Ishchenko, Yu.S., Bukarov, V.A. (2003) Minimisation of the probability of formation of exterior defect in welds during automatic orbital welding. Ibid., 10, 6−13.
10. Poloskov, S.I., Bukarov, V.A., Ishchenko, Yu.S. (2003) Peculiarities of control of the weld root formation in orbital position butt welding. Ibid., 4, 3−10.
11. Loskutov, M.I., Belkin, S.A., Shefel, V.V. et al. (1976) Automatic welding of the main circulation loop piping at NPP with apparatuses WWER-440. Energet. Stroitelstvo, 7, 7−10.
(1989) PNAE G-7-002-86: Rates of strength design for NPP equipment and piping. Moscow: Energoatomizdat

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Suggested Citation

A.K Tsaryuk, V.Yu Skulsky, V.V Volkov, A.I Byvalkevich, V.V Podiachev, N.A Ivanov, N.V Nemlej, A.P Miroshnichenko, A.V Bazhukov (2005) To the problem of selection of the technology for welding elements of MCP Dn850 in replacement of steam generators PGV-1000M at NPP. The Paton Welding J., 10, 39-45.

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