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Announces expansion of scope of the Pipe Crack Study Group to incl examination of intergranular stress corrosion cracking in the Inconel safe ends at subj facil in June 1978 & recommends actions to be taken to determine cause.

Accession Number: ML20064F298

Date Released: Saturday, November 7, 2020

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• ML20064F295 - Announces expansion of scope of the Pipe Crack Study Group to incl examination of intergranular stress corrosion cracking in the Inconel safe ends at subj facil in June 1978 & recommends actions to be taken to determine cause. (1 page(s), 9/29/1978)
• ML20153A897 - Outlines recommendations & proposed course of action re results of safe end inspec & metallographics exams relevant to insvc inspec, mod & design qual of 4 types of safe ends for recirculation nozzles. (4 page(s), 9/29/1978)
• ML20064F300 - Reports that preliminary test results re pump riser crack problem indicates cracks are intergranular & start in area formed by thermal sleeve & Inconel transition piece & may exist in other plants. (3 page(s), 9/14/1978)