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Thermal-hydraulics of PGV-4 water volume during damage of the feedwater collector nozzles

Abstract

A number of VVER-440 plants has experienced the distributing nozzles of feedwater collector being damaged due to corrosion-erosion wearing. Such phenomenon could result in feedwater redistribution within the SG inventory with undesirable consequences. The collector with damaged nozzles has to be replaced but a certain time is needed for the preparatory works. The main objective of the investigation conducted is to assess if the safe operation of SG is possible before collector replacement. It was shown that the nozzle damage as observed did not result in the dangerous disturbances of thermobydraulics as compared with the conditions existing at the initial period of operation. (orig.).
Authors:
Logvinov, S A; Titov, V F; [1]  Notaros, U; Lenkei, I [2] 
  1. OKB Gidropress (Russian Federation)
  2. NPP Paks (Hungary)
Publication Date:
Dec 31, 1995
Product Type:
Conference
Report Number:
LTKK-TJ-43; CONF-9410509-
Reference Number:
SCA: 210200; 360105; PA: AIX-29:032354; EDB-98:066407; SN: 98001970761
Resource Relation:
Conference: 3. international seminar on horizontal steam generators, Lappeenranta (Finland), 18-20 Oct 1994; Other Information: DN: 1 ref.; PBD: 1995; Related Information: Is Part Of Third international seminar on horizontal steam generators; PB: 430 p.
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; CORROSION; FEEDWATER; NOZZLES; REACTOR SAFETY EXPERIMENTS; STEAM GENERATORS; STEELS; WWER TYPE REACTORS
OSTI ID:
614732
Research Organizations:
Lappeenranta Univ. of Technology (Finland).
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE98626444; ISBN 951-763-942-2; TRN: FI9800070032354
Availability:
INIS; OSTI as DE98626444
Submitting Site:
FIN
Size:
pp. 33-48
Announcement Date:
Jun 26, 1998

Citation Formats

Logvinov, S A, Titov, V F, Notaros, U, and Lenkei, I. Thermal-hydraulics of PGV-4 water volume during damage of the feedwater collector nozzles. Finland: N. p., 1995. Web.
Logvinov, S A, Titov, V F, Notaros, U, & Lenkei, I. Thermal-hydraulics of PGV-4 water volume during damage of the feedwater collector nozzles. Finland.
Logvinov, S A, Titov, V F, Notaros, U, and Lenkei, I. 1995. "Thermal-hydraulics of PGV-4 water volume during damage of the feedwater collector nozzles." Finland.
@misc{etde_614732,
title = {Thermal-hydraulics of PGV-4 water volume during damage of the feedwater collector nozzles}
author = {Logvinov, S A, Titov, V F, Notaros, U, and Lenkei, I}
abstractNote = {A number of VVER-440 plants has experienced the distributing nozzles of feedwater collector being damaged due to corrosion-erosion wearing. Such phenomenon could result in feedwater redistribution within the SG inventory with undesirable consequences. The collector with damaged nozzles has to be replaced but a certain time is needed for the preparatory works. The main objective of the investigation conducted is to assess if the safe operation of SG is possible before collector replacement. It was shown that the nozzle damage as observed did not result in the dangerous disturbances of thermobydraulics as compared with the conditions existing at the initial period of operation. (orig.).}
place = {Finland}
year = {1995}
month = {Dec}
}