F310 DAMAGE PROBABILITY OF THE STEAM GENERATOR HEAT EXCHANGE PIPELINES IN VVER NPP

V. I. Baranenko; S. G. Oleynik; V. N. Merkushev; O. E. Kostyukov; O. A. Belyakov; A. V. Kumov

doi:10.1299/jsmeicope.2003.3._3-427_

2003.3

DOI https://doi.org/10.1299/jsmeicope.2003.3._3-427_

Conference information

F310 DAMAGE PROBABILITY OF THE STEAM GENERATOR HEAT EXCHANGE PIPELINES IN VVER NPP

V. I. Baranenko, S. G. Oleynik, V. N. Merkushev, O. E. Kostyukov, O. A. Belyakov, A. V. Kumov

Author information

Keywords: operational reliability, steam generators, heat exchange tube, water-water power reactor (VVER), water-chemical regime (WCR), stress corrosion, corrosion products (CP), vessel internals, high pressure heater (HPH)

CONFERENCE PROCEEDINGS FREE ACCESS

Pages _3-427_-_3-432_

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Abstract

Low operational reliability of steam generators (SG) of NPPs with VVER type reactors is one of main factors affecting stability and quality of the output electric energy. Unscheduled unit stoppage when detecting heat exchange tubes (HET) and other steam generator components defects, caused by their repairing or replacement of whole SG, Result in underproduction of electric energy and decreasing NPP capacity factor (CF). For these reasons the steam generator lifetime does not conform to the lifetime of NPP primary equipment. Therefore the enhancement of SG operational reliability attracts attention of experts from the countries operating PWR and VVER NPPs.

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