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Discusses inquiry rept re partial control rod scram during surveillance testing of main steam line radiation monitors. Scram initiated by monitoring trip signal for trip sys. Problem w/scram circuitry under review.

Accession Number: ML093630339

Date Released: Tuesday, April 7, 2020

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• ML093630338 - Advises of intent to amend Indemnity Agreement B-19 to delete coverage for License SNM-1108,effective on issuance of License DPR-26. (2 page(s), 10/13/1971)
• ML20084C686 - RO:on 710720,control rods associated w/scram solenoid groups 1 & 4 partially inserted during spurious trip.Reactor pressure spike caused steam voids in reactor to collapse. (9 page(s), 9/8/1971)