Part 21 Report - 1996-531

ACCESSION #: 9609190044 Grinnell [Registered Trademark] CORPORATION ENGINEERED PIPE SUPPORTS Precision Park 160 Frenchtown Road North Kingstown, RI 02852 September 16, 1996 United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: NRC OPERATIONS CENTER RE: INTERIM REPORT TITLE 10 - CHAPTER 1 - 10CFR PART 21 Gentlemen: During a recent engineering review of a Duke Power Purchase Order, Grinnell discovered the following deviation: Grinnell Hydraulic Shock and Sway Suppressors (Snubbers) have been qualified to the following environmental conditions: Radiation: 3 x 10**7 Rads Temperature for Seals and Metal Reservoirs (PH 76N and PH 74R) 340 degrees F for 3 hours followed by 320 degrees F for 3 hours followed by 250 degrees F for 18 hours Temperature for Polycarbonate Reservoirs: 200 degrees F Continuos Operation with Brief Transients to 250 degrees F These conditions vary from the accident environmental conditions contained in Duke Power's specifications for the McGuire and Oconee Plants. After obtaining additional information Grinnell promptly notified Duke Power of the deviation so they could perform a safety evaluation. SALES/MARKETING TECHNICAL SERVICES ADMINISTRATION Page 2 September 16, 1996 RE: INTERIM REPORT TITLE 10 - CHAPTER 1 - 10CFR PART 21 Duke Power notified Grinnell on September 3, 1996 that the snubbers are operable as shipped. This was confirmed by Duke Power Problem Investigation Reports - Serial # 0-096-1636 for the Oconee site and Serial # 0-M96-2408 for the McGuire Site. Duke Power intends to clarify the post accident environmental temperatures and radiation level requirements in their design specifications. Grinnell is currently reviewing the environmental conditions (relative to hydraulic snubbers of customer design specifications to assure we are in compliance and we will notify the appropriate customers if any deviations are found. We will also keep the NRC informed. Evaluation Completion: It is estimated that this review will be completed on or about November 18, 1996, Grinnell Contacts: David V. Walshe - Quality Assurance Manager (401 - 886-3030) Stephen J. Perreault - Engineering Manager (401 - 886-3040) Very truly yours, Grinnell Corporation David V. Walshe Quality Assurance Manager DVW/gp cc: Part 21 Evaluation Group D. Curtin - G/NK B. Doherty - G/Exeter Duke Power GENERAL INFORMATION or OTHER EVENT NUMBER: 31009 LICENSEE: GRINNELL CORP, NORTH KINGSTOWN, RI NOTIFICATION DATE: 09/16/96 CITY: NORTH KINGSTOWN REGION: 1 NOTIFICATION TIME: 12:11 [ET] COUNTY: STATE: RI EVENT DATE: 09/16/96 LICENSE#: AGREEMENT: Y EVENT TIME: 00:01[EDT] DOCKET: LAST UPDATE DATE: 09/16/96 NOTIFICATIONS NRC NOTIFIED BY: DAVE WALSHE VERN HODGE NRR HQ OPS OFFICER: CHAUNCEY GOULD EMERGENCY CLASS: NOT APPLICABLE 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH EVENT TEXT - 10CFR21 REPORT - THE GRINNELL CORPORATION DISCOVERED DEVIATIONS ON A DUKE POWER PURCHASE ORDER FOR GRINNELL HYDRAULIC SHOCK AND SWAY SUPPRESSORS (SNUBBERS). THESE SNUBBERS HAD BEEN QUALIFIED TO ENVIRONMENTAL CONDITIONS THAT VARY FROM THE ACCIDENT ENVIRONMENTAL CONDITIONS CONTAINED IN DUKE POWER'S SPECIFICATIONS FOR THE MCGUIRE AND OCONEE PLANTS. GRINNELL NOTIFIED DUKE POWER SO THAT THEY COULD PERFORM A SAFETY EVALUATION. DUKE POWER NOTIFIED GRINNELL THAT THE SNUBBERS ARE OPERABLE, AS SHIPPED. THEY ARE CONTINUING FURTHER INVESTIGATION OF THESE SNUBBERS. *** END OF DOCUMENT ***

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