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Discusses design deficiency of Westinghouse safety injection block switch used at Point Beach Unit 1.Westinghouse identified other plants using similar switches & informed licensees of potential resolutions noted in stated encls.

Accession Number: ML17309A437

Date Released: Sunday, November 8, 2020

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• ML17309A436 - Discusses design deficiency of Westinghouse safety injection block switch used at Point Beach Unit 1.Westinghouse identified other plants using similar switches & informed licensees of potential resolutions noted in stated encls. (14 page(s), 2/2/1990)
• ML17309A438 - Forwards AEOD/T904, "Design Deficiency of Safety Injection Block Switch." Licensee decision to correct existing scheme by installing two selector switches w/one switch for each train noted. (2 page(s), 4/18/1989)
• ML17309A439 - AEOD/T904, "Design Deficiency of Safety Injection Block Switch." (4 page(s), 4/18/1989)