Part 21 Report - 1995-157
95157 MCGUIRE 1 2 29016 07-03-95 POW LICENSEE: DUKE POWER CO. SITE: .MCGUIRE 1 2 . EN NUMBER:29016 DOCKET: 05000369 05000370 EVENT DATE: 07-03-95 RX TYPE: PWR PWR EVENT TIME: 14:02 VENDORS: W-4-LP W-4-LP NOTIFY DATE: 07-03-95 EMERGENCY CLASS: N/A REGION: 2 STATE: NC TIME: 14:08 OPS OFFICER: LEIGH TROCINE 10 CFR SECTION: CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE UNIT SCRAM RX INIT INITIAL MODE CURR CURRENT MODE CODE CRIT PWR PWR 1 N N 0 HOT STANDBY 0 HOT STANDBY 2 N Y 100 POWER OPERATION 100 POWER OPERATION 10 CFR PART 21 NOTIFICATION REGARDING THE FAILURE OF EMERGENCY DIESEL GENERATOR MODEL VTR 500 TURBOCHARGERS SUPPLIED BY ABB TURBO SYSTEMS, LTD. ON JULY 2, 1995, THE LICENSEE DETERMINED THAT FATIGUE FAILURE OF THE COMPRESSOR WHEEL CAN OCCUR WHEN USING A 17-HOLE JET ASSIST PLATE IF THE TURBOCHARGER IS OPERATED AT SPEEDS WHICH CAN PRODUCE RESONANCE. THE LICENSEE HAS EXPERIENCED TWO FAILURES OF MODEL VTR 500 TURBOCHARGERS SUPPLIED BY ABB TURBO SYSTEMS, LTD. (REFER TO EVENT NUMBER 28997.) THESE TURBOCHARGERS WERE DEDICATED AS COMMERCIAL GRADE ITEMS AND WERE APPROVED AND INSTALLED AS AN ACCEPTABLE SUBSTITUTE ON ALL FOUR MNS NORDBERG EMERGENCY DIESEL GENERATORS. FAILURE OF THE TURBOCHARGER RENDERS THE ASSOCIATED EMERGENCY DIESEL GENERATOR INCAPABLE OF PROVIDING THE RATED OUTPUT. IN ORDER TO CORRECT THIS PROBLEM, THE LICENSEE REPLACED THE 17-HOLE JET ASSIST WALL PLATES WITH WALL PLATES OF EITHER A SLOTTED OR BLANK CONFIGURATION. THE LICENSEE ALSO REPLACED THE COMPRESSOR WHEELS IN ALL FOUR EMERGENCY DIESEL GENERATORS. THE ONLY INSTALLED MODEL VTR 500 TURBOCHARGERS KNOWN TO THE LICENSEE ARE AT THE D. C. COOK PLANT. ONE ADDITIONAL UNIT IS ON ORDER FOR USE AT THE BRUNSWICK PLANT. BOTH PLANTS HAVE BEEN VERBALLY NOTIFIED BY THE LICENSEE. BECAUSE THE TURBOCHARGERS IN QUESTION WERE INSTALLED AS COMMERCIALLY DEDICATED PARTS, OTHER EXAMPLES MAY EXIST WITHIN THE INDUSTRY. THE LICENSEE WILL NOTIFY THE RESIDENT INSPECTOR.
Page Last Reviewed/Updated Wednesday, March 24, 2021
Page Last Reviewed/Updated Wednesday, March 24, 2021