BSEP 06-0073, Notification of Deviation from Boiling Water Reactor Vessel and Internals Project Guidelines
| ML062060463 | |
| Person / Time | |
|---|---|
| Site: | Brunswick, PROJ0704  (DPR-071) |
| Issue date: | 07/18/2006 |
| From: | Scarola J Progress Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| BSEP 06-0073 | |
| Download: ML062060463 (5) | |
Text
IM111I~tlJames Scamole o
Progress Energy PresiNent Vice President 1-90P1611Brunswick Nuclear Plant Progress Energy Carolinas, Inc.
JUL 1i8 2006 SERIAL: BSEP 06-0073 U. S. Nuclear Regulatory Commission ATT1N: Document Control Desk Washington, DC 20555-0001
Subject:
Brunswick Steam Electric Plant, Unit No. 1 Docket No. 50-325/License No. DPR-71 Notification of Deviation From Boiling Water Reactor Vessel and Internals Project Guidelines Ladies and Gentlemen:
Carolina Power & Light (CP&L) Company, now doing business as Progress Energy Carolinas, Inc., is notifying the NRC of a deviation from a Boiling Water Reactors Vessel and Internals Project (BWRVIP) program element for the Brunswick Steam Electric Plant (BSEP), Unit No. 1. This is a notification only and no action from the NRC is being requested.
The deviation is from a "needed" element of the BWRVIP program. The needed element is evaluation of a flaw in Unit I core spray sparger tee box weld $2a-350 in accordance with BWRVIP-1 8A, BWR Core Spray Internals Inspection and Flaw Evaluation Guidelines.
A deviation disposition has been prepared, reviewed, and approved in accordance with BWRVLP Report BWRVIP-94, Revision 1, BWR Vessel and Internals Project, Program Implementation Guide. Enclosure 1 of this letter describes the deviation taken from BWRVIP guidelines and actions taken in lieu of the BWRVIP requirement. Enclosure 2 documents a commitment made by CP&L.
Please refer any questions regarding this submittal to Mr. Leonard R. Beller, Supervisor - Licensing/Regulatory Programs, at (910) 457-2073.
Sincerely, James Scarola P.O. Box 10429 Southport, NC 28461 T> 910.457.3698 F> 910.457.2803
Document Control Desk BSEP 06-0073 / Page 2 WRMIwrm
Enclosures:
- 1. Description of Deviation From Boiling Water Reactor Vessel and Internals Project (BWRVIP) Guideline
- 2. List of Regulatory Commitments cc (with enclosures):
U. S. Nuclear Regulatory Commission, Region II ATTN: Dr. William D. Travers, Regional Administrator Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, GA 30303-8931 U. S. Nuclear Regulatory Commission (Electronic Copy Only)
ATTN: Ms. Brenda L. Mozafari (Mail Stop OWFN 8G9) 11555 Rockville Pike Rockville, MD 20852-2738 U. S. Nuclear Regulatory Commission ATTN: Ms. Meena Khanna (Mail Stop OWFN 9H4) 11555 Rockville Pike Rockville, MD 20852-2738 U. S. Nuclear Regulatory Commission ATTN: Mr. Eugene M. DiPaolo, NRC Senior Resident Inspector 8470 River Road Southport, NC 28461-8869 Ms. Jo A. Sanford Chair - North Carolina Utilities Commission P.O. Box 29510 Raleigh, NC 27626-0510
BSEP 06-0073 Page 1 of 2 Description of Deviation From Boiling Water Reactor Vessel and Internals Prolect (BWRVIP) Guideline Carolina Power & Light (CP&L) Company, now doing business as Progress Energy Carolinas, Inc., is notifying the NRC of a deviation from BWRVIP Report BWRVIP-18A, BWR Core Spray Internals Inspection and Flaw Evaluation Guidelines. A deviation disposition has been prepared, reviewed, and approved in accordance with BWRVIP-94, Revision 1, BWR Vessel and Internals Project, Program Implementation Guide.
BWRVIP-94, Revision 1, provides implementation guidance to ensure the consistent application of BWRVIP guidelines by BWRVIP member utilities. Section 3.5 of BWRVIP-94, Revision 1, provides specific guidance for the reporting of inspection results, new repairs, and deviations taken from BWRVIP guidelines. If a utility does not implement any portion of an applicable "mandatory" or "needed" BWRVIP guideline that has been approved by the BWRVIP Executive Committee and transmitted to the NRC, the utility is required to notify the NRC and BWRVIP within 45 days following the utility executive concurrence with the disposition of the deviation. The utility is required to describe what BWRVIP requirement they are deviating from and what is being done in lieu of the applicable requirement.
During the BSEP Unit 1 refueling outage in March 2006, CP&L performed an inspection of core spray tee box weld S2a-350, including a re-inspection of a crack in this weld that was previously identified in 1993. A description of the deviation taken from the applicable BWRVIP inspection guideline is provided below.
BWRVIP BWRVIP Alternative Document Requirement Exception In Lieu Of BWRVIP-18-A, If the measured extent of The current evaluation An evaluation of current Section 5.1.5 cracking is "x" percent of the flaw in the heat and historical inspection of the inspected length, affected zone of core results for core spray then it must be assumed spray sparger weld sparger weld S2a-350 and that "2x" percent of the S2a-350 does not a 1993 limit load analysis un-inspected length is account for potential for the sparger tee crack cracked.
flaws in the has concluded that inaccessible region.
complete failure is unlikely. However, a review of short-term and long-term cooling has determined that a failure of core spray sparger weld
BSEP 06-0073 Page 2 of 2 BWRVIP BWRVIP Alternative Document Requirement Exception In Lieu Of
$2a-350 will not prevent the Core Spray System from accomplishing its design function.
This deviation will end during Unit I Refueling Outage B 117R1, currently scheduled for March 2008, at which time a repair will be performed.
BSEP 06-0073 Page 1 of 1 List of Regulator Commitments The following table identifies those actions committed to by Carolina Power & Light Company, now doing business as Progress Energy Carolinas, Inc., in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments. Please direct questions regarding these commitments to the Manager - Support Services at the Brunswick Steam Electric Plant.
Commitment Schedule Perform a repair core spray sparger weld I Unit 1 Refueling Outage B117R1,
$2a-350.
currently scheduled for March 2008.