ML20101B027
| ML20101B027 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Sequoyah, Farley  |
| Issue date: | 03/07/1996 |
| From: | Jain S DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20101B029 | List: |
| References | |
| NUDOCS 9603140042 | |
| Download: ML20101B027 (3) | |
Text
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g g gv,.r v.iiey po..r St.iion Shippingport. PA 15077-0004 SUSHIL C. JAIN (412) 393-5512 g,avger=*ra March 7,1996 Fax (412) 643-8069 Nuclear Power Dtv6sion U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001
Subject:
Beaver Valley Power Station, Unit No.1 Docket No. 50-334, License No. DPR-66 Proposed Operating License Change Request 229; Follow-up Information 3
i Supporting Alternate Tube Plugging Criteria Implementation This letter provides additional information as a follow-up to the information provided in our response dated March 1,1996. Enclosure 1 provides the steam generator upper voltage repair limit calculation and proprietary and non-proprietary versions of the updated tube pull database information which includes the new Beaver Valley 1, Sequoyah 1, and Farley 1 and 2 tube pull data as well as alternate repair criteria t
correlations for 7/8" diameter tubes.
It is our understanding that the enclosed information is the only remaining information necessary to pennit issuing the technical j
specification amendment for the subject license change request.
1 As Enclosure 1 contains infonnation proprietary to the Westinghouse Electric Corporation, it is supported by an affidavit signed by Westinghouse, the owner of the information. The affidavit sets forth the basis on which the infonnation may be withheld from public disclosure by the Commission and addresses with specificity the 4
considerations listed in paragraph (b) (4) of Section 2.790 of the Commission's regulations.
Accordingly, it is respectfully regaested that the infonnation which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section
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2.790 of the Commission's regulations. Correspondence with respect to the copyright or proprietary aspects of the items listed aeove or the supporting affidavit should reference CAW-96-935 and should be addressed to Mr. Nicholas J. Liparulo, Manager Regulatory
& Engineering Networks, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania 15230-0355.
9603140042 960307 PDR ADOCK 0500 4
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Beaver Valley Power Station Unit No.1 Proposed Operating License Change Request 229 Follow-up Information Page 2 If you have any questions regarding this submittal, please contact Mr. G. A. Kammerdeiner at (412) 393-6855.
Sincerely, o_? _.
Sushil C. Jain c:
Mr. L. W. Rossbach, Sr. Resident Inspector Mr. T. T. Martin, NRC Region I Administrator Mr. D. S. Brinkman, Sr. Project Manager l
l ENCLOSURE 1 Beaver Valley Power Station, Unit No.1 PROPOSED OPERATING LICENSE CHANGE REQUEST 229 FOLLOW-UP INFORMATION The attached data provided in Table 1 includes the most recent tube pull results for 7/8"
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tubing. Using this data, the upper voltage repair limit (VuRL) for Unit I refueling outage 11 is calculated as follows:
VuRt = Vst - Vo, - Vune VuRL = Vst / (1 + % Vune/100 + % Vo/100)
Where Vuos = NDE measurement uncertainty (20% per GL 95-05)
Vo, = Voltage growth rate per cycle (30% per GL 95-05)
Vst = Voltage structural limit from the burst pressure vs bobbin coil voltage correlation VURt = 8.6 volts / (l +.2 +.3) 1 VuRt = 8.6 volts / (1.5)
VuRt = 5.7 volts
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