Part 21 Report - 1997-240
LICENSEE: UNITED STATES ENRICHMENT CORPORATIO
SITE: PADUCAH GASEOUS DIFFUSION PLAN EN NUMBER:31954
DOCKET: 0707001 EVENT DATE: 03-14-97
RX TYPE: EVENT TIME: 00:00
VENDORS: NOTIFY DATE: 03-14-97
EMERGENCY CLASS: N/A REGION: 3 STATE: KY TIME: 13:30
OPS OFFICER: STEVE SANDIN
10 CFR SECTION: CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE
10 CFR PART 21 NOTIFICATION REGARDING STRESS CORROSION CRACKING
OF CYLINDER VALVE PACKING NUTS
IT HAS BEEN DETERMINED THAT STRESS CORROSION CRACKING OF THE
1-INCH CYLINDER VALVE PACKING NUTS USED IN VARIOUS STAGES OF THE
ENRICHMENT PROCESS HAS, IN ONE CASE, RESULTED IN A REPORTABLE
RELEASE OF UF6. THIS PROBLEM HAS ONLY BEEN OBSERVED IN THE
636-ALLOY NUTS ON VALVES SUPPLIED BY HUNT VALVE CO., INC.
* * * UPDATE 1740EDT 4/11/97 FROM MARK LOMBARD TO S. SANDIN * * *
THE LICENSEE SUBMITTED AN UPDATE VIA FAX. NOTIFIED R3DO(MADERA)
AND FORWARDED TO NMSS(RAMSEY).
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