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
Page Last Reviewed/Updated Wednesday, March 24, 2021