CPSES-200202963, Update for Commitment Material Change Evaluation Report 0005
| ML022330411 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/12/2002 |
| From: | Walker R TXU Electric |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 10010, CPSES-200202963, TXX-02154 | |
| Download: ML022330411 (3) | |
Text
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TX U TXU Energy C. Lance Terry Comanche Peak Steam Senior Vice President &
Electric Station Principal Nuclear Officer PO. Box 1002 (E01)
Glen Rose, TX 76043 Tel 254 897 8920 Fax. 254 897 6652 lance terry@txu corn CPSES-200202963 Log # TXX-02154 File # 10010 August 12, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 UPDATE FOR COMMITMENT MATERIAL CHANGE EVALUATION REPORT 0005 RE:
TXU Energy letter, logged TXX-02146, from C. L. Terry to the NRC dated August 1, 2002 Gentlemen:
On August 1, 2002, TXU Energy transmitted the 10CFR50.59 Evaluation Summary Report 0010 and Commitment Material Change Evaluation Report (CMCE) 0005 as a single parcel. Within the CMCE portion of the report, CMCE-01-03 contained a typographical error.
Please find attached the following update and correction pertaining to CPSES Unit 1 and Unit 2 Commitment Material Change Evaluation Report 0005.
The attachment is an updated and corrected Commitment Material Change Evaluation Report. The Commitment Material Change Evaluation identifies the affected commitment and origin, original criteria, proposed changes and the justifications for any changes. This transmittal pertains to the update and correction of CMCE-01-03 commitment material change evaluation which was previously reported in the referenced document. The error corrected was the reference; EPRI RI-151. The correct information is; EPRI RI-ISI.
- TXU TXX-02154 page 2 of 2 This communication contains no new licensing basis commitments regarding CPSES Units 1 and 2. If you have any further questions associated with this transmittal, please contact Mr. Neil Harris at 254-897-5449.
Sincerely, TXU Generation Company LP By:
TXU Generation Management Company LLC, Its General Partner C. L. Terry Senior Vice President and Principal Nuclear Officer By:
R-,, U r,'
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- Roge lb. Walker Regulatory Affairs Manager NSH/nh Attachments c -
E. W. Merschoff, Region IV W. D. Johnson, Region IV D. H. Jaffe, NRR Resident Inspectors, CPSES
Attachment to TXX-02154 Page 1 of 1 CMCE:
01-03 Commitment Number:
26528 Change Type:
Revision Source Document:
SSER-26 TXX-01026 SECY-00-045 NEI-99-04 Original Commitment
Description:
The residual heat removal (RHR) system piping on the discharge side of RHR pumps 1 and 2 contains a total of approximately 250 welds on 8-inch and 10-inch NPS Schedule 40 piping with wall thicknesses of 0.322 inch and 0.365 inch, respectively. The PSI examinations performed by the applicant were on the suction side of the RHR pumps where the 12-inch and 16-inch NPS pipe wall thicknesses are equal to or greater than 0.375 inch. When developing the in-service inspection plan, the applicant should consider redistributing the 7.5 percent sample to include volumetric examination of welds on the discharge side of the RHR pumps.
Revised Commitment
Description:
In lieu of selecting 7.5% of the welds from the "thin wall" (0.375") discharge piping for the RHR and CT pumps, the selection will be based on the EPRI RI-ISI methodology. When developing the in-service inspection plan, the applicant should consider redistributing the 7.5%
sample to include volumetric examination of welds on the discharge side of the RHR pumps.
Justification for Change:
The commitment identified in NRC SSER-26 was not a mandatory commitment (reference SECY-00-045 and NEI-99-04). The selection of welds will be based on the EPRI RI-ISI methodology.