J. Phys. IV France
Volume 136, November 2006
Page(s) 257 - 262
Publié en ligne 22 décembre 2006
Corrosion and Long Term Performance of Concrete in NPP and Waste Facilities
V. L'Hostis, F. Foct and D. Féron
J. Phys. IV France 136 (2006) 257-262

DOI: 10.1051/jp4:2006136026

Corrosion failure of a BWR embedded reactor containment liner

B. Wegemar

Westinghouse Electric Sweden AB, 721 63 Västerås, Sweden

(Published online 22 December 2006)

Following sixteen fuel cycles, leakage through a BWR embedded reactor containment liner (carbon steel) was discovered. Leakage was located at a penetration for electrical conductors as a result of penetrating corrosion attack. During construction, porous cement structures and air pockets/cavities were formed due to erroneous injection of grout. Corrosion attacks on the CS steel liner were located at the relatively small, active surfaces in contact with the porous cement structure. The corrosion mechanism was supposed to be anodic dissolution of the steel liner in areas with insufficient passivation. The penetrations were restored according to original design requirements. Keywords: corrosion, embedded liner, grout injection

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