Morning Report for January 9, 2003
Headquarters Daily Report ********************************************************* 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 9, 2003 Licensee/Facility: Notification: Southern Nuclear Operating Company MR Number: H-03-0001 Vogtle 2 Date: 01/08/03 Waynesboro,Georgia Dockets: 50-425 PWR/W-4-LP Subject: Part 21 - Unstaked Capscrews Renders Residual Heat Removal Pump Inoperable Discussion: DATE OF DOCUMENT: 12/20/02 ACCESSION NO.: ML023650495 SOURCE OF DOCUMENT: LER 50-425/ REVIEWER: D. Billings 2002-001 During defueled conditions, the Residual Heat Removal (RHR) pump A was started to fill and vent the RHR system. The pump tripped moments later. Investigation determined that a back casing ring capscrew had become loose and subsequently lodged between the impeller and the back casing ring. RHR pump B was inspected and found to have a similar condition. In addition, the spare back casing rings in the warehouse were inspected and found to also have inadequately staked capscrews. Root cause of this event was determined to be a failure of the manufacturer to properly stake the back casing ring capscrews. Each capscrew is torqued and staking is performed as a redundant measure to hold the capscrews in place. The improperly staked capscrews lost torque and subsequently backed out. This could potentially cause both trains of ECCS equipment to be rendered inoperable. Vendor: Ingersoll-Rand Model No.: 8X20WDF Back Casing Ring Part No.: 6B Capscrew No.: 118C Contacts: Danny Billings, NRR 301-415-1175 E-mail: deb1@nrc.gov John Zeiler, Region 2 706-554-9901 E-mail: jxz@nrc.gov _ HEADQUARTERS MORNING REPORT PAGE 2 JANUARY 9, 2003 MR Number: H-03-0002 NRR DAILY REPORT ITEM GENERIC COMMUNICATIONS Subject: Issuance of Information Notice 2002-35 Information Notice 2002-35, "CHANGES TO 10 CFR PARTS 71 AND 72 QUALITY ASSURANCE PROGRAMS," was issued on December 20, 2002. This notice was issued to all holders of 10 CFR Part 71 quality assurance (QA) program approvals and all 10 CFR Part 72 licensees and certificate holders to remind them of the requirement to obtain NRC approval of all changes to Parts 71 and 72 QA programs before implementation of the changes. ADAMS Accession No. ML023520339 Technical Contact: Frank Jacobs, NMSS 301-415-3961 E-mail: fxj2@nrc.gov
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