HIGH-TEMPERATURE LEAK-CHARACTERISTICS OF PCV HATCH FLANGE GASKET

Citation
K. Hirao et al., HIGH-TEMPERATURE LEAK-CHARACTERISTICS OF PCV HATCH FLANGE GASKET, Nuclear Engineering and Design, 145(3), 1993, pp. 375-386
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Nuclear Sciences & Tecnology
ISSN journal
0029-5493
Volume
145
Issue
3
Year of publication
1993
Pages
375 - 386
Database
ISI
SICI code
0029-5493(1993)145:3<375:HLOPHF>2.0.ZU;2-H
Abstract
Small-model tests were performed to examine the integrity of the conta inment flange gasket in a severe accident. During a severe accident, c ontainment structures suffer slow pressurization at relatively high te mperatures. A realistic understanding of containment performance in su ch conditions is a major concern in developing an accident management strategy. This paper describes the results of experiments on the seali ng capability of flange gaskets at high pressures and high temperature s. Silicone-rubber gaskets, which are used as the sealing material in BWR plant primary containment vessels (PCV) in Japan, were examined in small-model tests. The gaskets show sufficient sealing capability up to 225 degrees C at 20 kgf/cm(2). When applying the leakage characteri stics specified in this paper to codes for severe accidents, the resul ts should be examined carefully based on realistic heattransfer phenom ena.