ML20100P131
| ML20100P131 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/04/1996 |
| From: | Shell R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19355C727 | List: |
| References | |
| NUDOCS 9603110057 | |
| Download: ML20100P131 (6) | |
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HM Tennessee Valley Autnonty Post othee Box 2000. Soddy-Daisy Tennessee 37379 March 4,1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:
In the Matter of
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Docket No. 50-328 Tennessee Valley Authority
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SEQUOYAH NUCLEAR PLANT (SON)- NRC REQUEST FOR ADDITIONAL INFORMATION - TECHNICAL SPECIFICATION (TS) CHANGE 95-23, " ALTERNATE PLUGGING CRITERIA (APC) FOR STEAM GENERATOR (S/G) TUBING - UNIT 2"
References:
- 1. TVA letter to NRC dated December 12,1995, "Sequoyah Nuclear Plant (SON) - Technical Specification (TS) Change 95-23, ' Alternate Plugging Criteria (APC) for Steam Generator (S/G) Tubing - Unit 2'"
- 2. TVA letter to NRC dated February 9,1996,"Sequoyah Nuclear Plant (SON) - Special Report On Steam Generator (SG) Activities Completed During The Unit 1 Cycle 7 Refueling Outage" On February 1,1996, TVA met with NRC to discuss NRC questions regarding the TS amendment provided in Reference 1 above. This meeting concluded with a need to docket formal responses to the following items:
Item 1: Request: Relative to Enclosure 2, page 5, of Reference 1, TVA based its crack growth calculations on Electric Power Research Institute (EPRI) Report TR-100407. This report is two years old; therefore, the crack growth data is not up-to-date. TVA must submit current data for the staff to assess the proposed crack growth rate.
Response: Enclosure 2 contains a copy of "EPRI ARC Database for 3/4-inch and 7/8-inch Diameter Tubes and Updated ARC Correlation for 7/8-inch Diameter Tubes" (Proprietary). Enclosure 3 contains a copy of "EPRI ARC
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Database for 3/4-Inch and 7/8-inch Diameter Tubes and Updated ARC Correlation for 7/8-inch Diameter Tubes" (Non-Proprietary).
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U.S. Nuclear Regulatory Commission Page 2 March 4,1996 i
item 2: Request: Relative to Enclosure 5, page 1, Item 3.b.3.4 of Reference 1, please provide the basis for the statement: " Axial indications in dents less I
than 5 volts that are structurally significant will be detected with bobbin coit j
..." Discuss any testing performed to support this conclusion.
I Response: Information contained within Reference 2 provides the necessary data and discussion to support the conclusion stated above. The relevant portion of this information is supplied in Enclosure 4, for your convenience.
Item 3: Request: Relative to Enclosure 5, page 2, Item 3.c.2 of Reference 1, NRC is reviewing the industry reports on probe variability and probe wear, submitted on January 23,1996. This issue is still open. Our goal would be to resolve these issues and request that a permanent TS amendment for Unit 2 be submitted.
Response: Enclosure 5, Item 3.c.2 of Reference 1 is hereby revised to read:
"TVA will comply with probe variability as defined in the NEl letter to NRC dated January 23,1996,'New Probe Variability For Use In The ODSCC Alternate Repair Criteria.'" It is recognized that the above NEl letters do not address " nominal voltage response" and " testing at mixed frequencies."
These items are being addressed by the nuclear industry and will be factored into the TVA APC program upon resolution,
,, item 3.c.3 of Reference 1 is hereby revised to read: "TVA will comply with probe wear as defined in NEl letter to NRC dated February 23, 1996,' Eddy Current Probe Replacement Criteria for Use in ODSCC Alternate Repair Criteria (Project No. 689),' and NEl letter to NRC dated January 23, 1996,' Eddy Current Probe Replacement Criteria for Use in ODSCC Alternate Repair Criteria.'"
Upon final resolution of the probe variability issue, TVA plans to submit a license amendment request for Units 1 and 2 to allow implementation of APC on a noncycle specific basis.
Since Enclosure 2 contains information proprietary to Westinghouse Electric Corporation, Enclosure 1 contains the application for withholding and affidavit CAW-96-934 signed by Westinghouse, the owner of the information, as well as the proprietary information notice and copyright notice. The application for withholding i
and the affidavit set forth the basis on which the information may be withheld from l
public disclosure by NRC and addresses with specificity the considerations listed in Paragraph (b)(4) of Section 2.790 of the NRC regulations.
Accordingly, it is respectfully requested that information that is proprietary to I
Westinghouse be withheld from public disclosure in accordance with 10 CFR, Section 2.790, of the NRC regulations.
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3, U. S. Nuclear Regulatory Commission Page 3 March 4,1996 I
t Correspondence, with respect to the copyright or proprietary aspects of the items listed above or the supporting Westinghouse affidavit, should reference CAW-96-934 and should be addressed to N. J. Liparulo, Manager of Regulatory & Engineering Networks, Westinghouse Electric Corporation, P. O. Box 355, Pittsburgh, Pennsylvania 15230-0355.
L Please direct questions concerning this issue to Bill Ludwig at (423) 843-7460 l-Sincerely, Yo R. H. Shell Manager I
SON Site Licensing Enclosures cc (Encforgres):
Mr. '
- 5. LaBap,, Project Manager Nuclear Regulatory Commission i
One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region ll 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 L
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Proprietary Information Notice, Copyright Notice, i
Application for Withholding, 1
And Affidavit i
Proprietary Information Notice Transmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the NRC in connection with requests for generic and/or plant-specific review and approval.
In order to conform to the requirements of 10 CFR 2.790 of the Commission's regulations concerning the protection of proprietary information so submitted to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted).
The justification for claiming the information so designated as proprietary is indicated in both versions by means of lower case letters (a) through (f) contained within parentheses located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information. These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this transmittal pursuant to 10 CFR 2.790(b)(1).
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1 Copyright Notice lhe reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal use in connection with genetic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.790 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection notwithstanding. With respect to the non-proprietary versions of j
these reports, the NRC is permitted to make the number of copies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, DC and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.
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