WO 10-0045, Revision to Response to NRC Generic Letter 2007-01

Revision to Response to NRC Generic Letter 2007-01

ML101890553
Person / Time
Site:	Wolf Creek
Issue date:	06/30/2010
From:	Hedges S Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-07-001, WO 10-0045
Download: ML101890553 (3)

Text

W0L.F CREEK 'NUCLEAR OPERATING CORPORATION June 30, 2010 Stephen E. Hedges Site Vice President WO 10-0045 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Reference:

Letter ET 07-0007, dated May 2, 2007, from T. J. Garrett, WCNOC, to USNRC (ADAMS Accession Number ML071290049)

Subject:

Docket No. 50-482: Revision to Response to NRC Generic Letter 2007-01 Gentlemen:

The reference provided the Wolf Creek Nuclear Operating Corporation (WCNOC) 90-day response to NRC Generic Letter 2007-01, "Inaccessible or Underground Power Cable Failures that Disable Accident Mitigation Systems or Cause Plant Transients." The generic letter requested licensees to provide a history of inaccessible or underground power cable failures and to describe inspection, testing and monitoring programs to detect the degradation of inaccessible or underground power cables for cables within the scope of 10 CFR 50.65.

On June 28, 2010, while reviewing the reference response, WCNOC discovered an error in the letter. In the attachment, in WCNOC's response to NRC Requested Information Item (2),

second paragraph, WCNOC made the following statement:

"WCNOC periodically performs visual inspection for corrosion and degradation of cable tray supports and visual inspection of the ends of the cables for jacket degradation of medium voltage cables installed in manholes."

Although the WCNOC inspection process in place at the time of submittal of the reference letter visually inspected medium voltage cables installed in manholes for jacket degradation, the inspection process did not include visual inspection of ends of the cables and did not apply to all medium voltage cables.

P-'.U. Box 411 / Burlington, KS 6o6839 / hnone: (b6U) 36:'4-8831 An Equal Opportunity Employer M/F/HCNET

WO 10-0045 Page 2 of 3 Pursuant to 10 CFR 50.54(f), the original sentence described above should be replaced with the following:

"WCNOC periodically performs visual inspection for corrosion and degradation of cable tray supports and cable jackets for selected medium voltage cables installed in manholes."

Subsequent to the submittal of the reference letter, through involvement in industry activities associated with inaccessible or underground cable, as well as site-specific experience, WCNOC has modified the process for visual inspections inside cable manholes.

This letter contains no commitments. The reference letter also contained no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4190, or Mr.

Richard D. Flannigan at (620) 364-4117.

Sincerely, E. Hedges SEH/rlt cc: E. E. Collins (NRC)

G. B. Miller (NRC)

B. K. Singal (NRC)

Senior Resident Inspector (NRC)

WO 10-0045 Page 3 of 3 STATE OF KANSAS )

)s COUNTY OF COFFEY )

Stephen E. Hedges, of lawful age, being first duly sworn upon oath says that he is Site Vice President of Wolf Creek Nuclear Operating Corporation; that he has read the foregoing document and knows the contents thereof; that he has executed the same for and on behalf of said Corporation with full power and authority to do so; and that the facts therein stated are true and correct to the best of his knowledge, information and belief.

Stephen-. e s, Site Vice r/ei nt SUBSCRIBED and sworn to before me this 3*)%ay of Ulfi, 2010.

OFF*CIAL"-

RHONDA L.1EMEYER MYCOUMSSION EXPIRES (A~d~

Notary Public C

etSEAL:. Pub Expiration Date j/ i/ d l{//

Text

W0L.F CREEK 'NUCLEAR OPERATING CORPORATION June 30, 2010 Stephen E. Hedges Site Vice President WO 10-0045 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Reference:

Letter ET 07-0007, dated May 2, 2007, from T. J. Garrett, WCNOC, to USNRC (ADAMS Accession Number ML071290049)

Subject:

Docket No. 50-482: Revision to Response to NRC Generic Letter 2007-01 Gentlemen:

The reference provided the Wolf Creek Nuclear Operating Corporation (WCNOC) 90-day response to NRC Generic Letter 2007-01, "Inaccessible or Underground Power Cable Failures that Disable Accident Mitigation Systems or Cause Plant Transients." The generic letter requested licensees to provide a history of inaccessible or underground power cable failures and to describe inspection, testing and monitoring programs to detect the degradation of inaccessible or underground power cables for cables within the scope of 10 CFR 50.65.

On June 28, 2010, while reviewing the reference response, WCNOC discovered an error in the letter. In the attachment, in WCNOC's response to NRC Requested Information Item (2),

second paragraph, WCNOC made the following statement:

"WCNOC periodically performs visual inspection for corrosion and degradation of cable tray supports and visual inspection of the ends of the cables for jacket degradation of medium voltage cables installed in manholes."

Although the WCNOC inspection process in place at the time of submittal of the reference letter visually inspected medium voltage cables installed in manholes for jacket degradation, the inspection process did not include visual inspection of ends of the cables and did not apply to all medium voltage cables.

P-'.U. Box 411 / Burlington, KS 6o6839 / hnone: (b6U) 36:'4-8831 An Equal Opportunity Employer M/F/HCNET

WO 10-0045 Page 2 of 3 Pursuant to 10 CFR 50.54(f), the original sentence described above should be replaced with the following:

"WCNOC periodically performs visual inspection for corrosion and degradation of cable tray supports and cable jackets for selected medium voltage cables installed in manholes."

Subsequent to the submittal of the reference letter, through involvement in industry activities associated with inaccessible or underground cable, as well as site-specific experience, WCNOC has modified the process for visual inspections inside cable manholes.

This letter contains no commitments. The reference letter also contained no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4190, or Mr.

Richard D. Flannigan at (620) 364-4117.

Sincerely, E. Hedges SEH/rlt cc: E. E. Collins (NRC)

G. B. Miller (NRC)

B. K. Singal (NRC)

Senior Resident Inspector (NRC)

WO 10-0045 Page 3 of 3 STATE OF KANSAS )

)s COUNTY OF COFFEY )

Stephen E. Hedges, of lawful age, being first duly sworn upon oath says that he is Site Vice President of Wolf Creek Nuclear Operating Corporation; that he has read the foregoing document and knows the contents thereof; that he has executed the same for and on behalf of said Corporation with full power and authority to do so; and that the facts therein stated are true and correct to the best of his knowledge, information and belief.

Stephen-. e s, Site Vice r/ei nt SUBSCRIBED and sworn to before me this 3*)%ay of Ulfi, 2010.

OFF*CIAL"-

RHONDA L.1EMEYER MYCOUMSSION EXPIRES (A~d~

Notary Public C

etSEAL:. Pub Expiration Date j/ i/ d l{//