Morning Report for January 22, 2003
Headquarters Daily report JANUARY 22, 2003 ****************************************************** REPORT NEGATIVE ATTACHED INPUT RECEIVED HEADQUARTERS X REGION I X REGION II X REGION III X REGION IV X *************************************************************************** PRIORITY ATTENTION REQUIRED MORNING REPORT - HEADQUARTERS JANUARY 22, 2003 MR Number: H-03-0004 NRR DAILY REPORT ITEM GENERIC COMMUNICATIONS Subject: Issuance of Information Notice 2003-02 Information Notice 2003-02, Recent Experience With Reactor Coolant System Leakage and Boric Acid Corrosion dated January 16, 2003 The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to inform addressees of recently observed reactor coolant leakage at two pressurized water reactor facilities, one of which resulted in the subsequent degradation of the reactor pressure vessel head. ADAMS Accession No.: ML030160004 Contacts: V. Hodge, NRR E. Sullivan, NRR 301-415-1861 301-415-2796 E-mail: cvh@nrc.gov E-mail: ejs@nrc.gov PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II JANUARY 22, 2003 Licensee/Facility: Notification: Virginia Power Co. MR Number: 2-03-0001 Surry 1 Date: 01/22/03 Surry,Virginia Dockets: 50-280 PWR/W-3-LP Subject: SURRY UNIT 1 C REACTOR COOLANT PUMP MOTOR BEARING FAILURE Reportable Event Number: 39507 Discussion: On 1/14/03 Surry Unit 1 was manually tripped from full power due to elevated C reactor coolant pump (RCP) shaft vibrations and a rapidly increasing lower motor bearing temperature. The lower motor bearings revealed severe damage due to lack of lubrication. Investigation revealed that the lower bearing oil reservoir site glass was empty and the reservoir was approximately 4 gallons below the 22 gallons required to fill the site glass to mid-scale. The investigation also revealed that no oil low level alarm had been received due to a broken oil reservoir level switch assembly. Furthermore no adverse trend in the bearing RTD temperature had been noted. The RTD was not installed in accordance with the Westinghouse drawing, in that, the RTD tip was not in contact with the bearing shoe. The loss of oil apparently occurred through small leaks over the approximately 400 days the unit was in service. The licensee has inspected oil levels and functionally tested the level alarms for the other Unit 1 RCPs. The B RCP upper oil reservoir alarm failed and was repaired. The C RCP motor bearing has been repaired and the unit is preparing for restart. Regional Action: Routine resident followup. Contact: L. GARNER (404)562-4552
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Page Last Reviewed/Updated Wednesday, March 24, 2021