ML20044B776
| ML20044B776 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 03/01/1993 |
| From: | Edison G Office of Nuclear Reactor Regulation |
| To: | Sieber J DUQUESNE LIGHT CO. |
| References | |
| TAC-M85081, TAC-M85082, NUDOCS 9303040141 | |
| Download: ML20044B776 (4) | |
Text
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March 1, 1993 Docket Nos. 50-334 and 50-412 Mr. J. D. Sieber, Senior Vice President and Chief Nuclear Officer Nuclear Power Division Duquesne Light Company Post Office Box 4 Shippingport, Pennsylvania 15077-0004
Dear Mr. Sieber:
SUBJECT:
BEAVER VALLEY ATOMIC POWER STATION, UNIT N05. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION RELATED TO CHANGE REQUESTS 205 AND 71 (TAC NOS. M85081 and M85082)
On December 30, 1992, Duquesne Light Company (DLC) submitted an application to amend the Appendix A Technical Specifications (TS) for Beaver Valley Power Station, Unit I and Unit 2.
The proposed application would revise the IS to allow sleeving of selected steam generator tubes. Our review of this application is underway, but for us to complete our review we require additional information.
The required additional information is described in the Enclosure.
DLC is requested to provide a response by March 12, 1993 so that the staff can continue its review on the schedule you have requested.
Questions 1 and 2 were discussed on,lanuary 26, 1993 with Mr. Sovick of your staff, and questions 3 through 10 on February 23, 1993.
The requirements of this letter affect fewer than 10 respondents, and, i
therefore, are not subject to the Office of Management and Budget review under FL 96-511.
Sincerely,
/S/
Gordon E. Edison, Senior Project Manager Project Directorate I-3 Division of Reactor Projects - I/11 Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/ enclosure:
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!! arch 1, 1993 Docket Nos. 50-334 and 50-412 Mr. J. D. Sieber, Senior Vice President and Chief Nuclear Officer Nuclear Power Division Duquesne Light Company Post Office Box 4 Shippingpo-t, Pennsylvania 15077-0004
Dear Mr. Sieber:
Sl8BJECT:
BEAVER VALLEY ATOMIC POWER STATION, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INF0PJ4ATION RELATED TO CHANGE REQUESTS 205 AND 71 (l R N05. M85081 and M85082)
On December 30, 1992, Duquesne Light Comptiy (DLC) submitted an application to amend the Appendix A Technical Specifications (TS) for Beaver Valley Power Station, Unit 1 anc Unit 2.
The proposed application would revise the TS to allow sleeving of selected steam generator tubes. Our review of this application is underway, but for us to complete our review we require additional information.
The required additional information is described in the Enclosure. DLC is requested to provide a response by March 12, 1993 so that the staff can continue its review on the schedule you have requested.
Questions 1 and 2 were discussed on January 26, 1993 with Mr. Sovick of your staff, and questions 3 through 10 on February 23, 1993.
The requirements of this letter affect fewer than 10 respondents, and, therefore, are not subject to the Office of Management and Budget review under PL 96-511.
Sincerely, Gordon E. Edison, Senior Project Manager Project Directorate I-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page
\\
Mr. J. D. Sieber Beaver Valley Power Station i
Duquesne Light Company Units 1 & 2 CC:
l Jay E. Silberg, Esquire Bureau of Radiation Protection Shaw, Pittman, Potts & Trowbridge Pennsylvania Department of 2300 N Street, NW.
Environmental Resources Washington, DC 20037 ATTN:
R. Janati Post Office Box 2063 Nelson Tonet, Manager Harrisburg, Pennsylvania 17120 Nuclear Safety Duquesne Light Company Mayor of the Borrough of Post Office Box 4 Shippingport Shippingport, Pennsylvania 15077 Post Office Box 3 Shippingport, Pennsylvania 15077 Comissioner Roy M. Smith West Virginia Department of Labor Regional Administrator, Region I Building 3, Room 319 U.S. Nuclear Regulatory Comission Capitol Complex 475 Allendale Road Charleston, West Virginia 25305 King of Prussia, Pennsylvania 19406 John D. Borrows Resident Inspector Director, Utilities Department U.S. Nuclear Regulatory Comission Public Utilities Comission Post Office Box 181 180 East Broad Street Shippingport, Pennsylvania 15077 l
Colun. Sus, Ohio 43266-0573 Director, Pennsylvania Emergency Management Agency Post Office Box 3321 Harrisburg, Pennsylvania 17105-3321 Ohio EPA-DERR ATTN: Zack A. Clayton Post Office Box 1049 Columbus, Ohio 43266-0149 l
3 Enclosure RE0 VEST FOR ADDITIONAL INFORMATION 1.
Please confirm that the Westinghouse laser welded free span joint will be post weld stress relief heat treated.
2.
An expanded discussion is needed of the "no detrimental effects expected" on the lower tube to tube sheet seal weld.
(WCAP-13483, p. 5-12.)
3.
What is the material specification for the tubes and sleeves, ASME SA-1637 4.
Provide the maximum and minimum dimensions for the outside diameter (7/8" 0.0. nominal) and wall thicknesses (.050" nominal) of the tubes.
5.
Provide the maximum, nominal and minimum dimensions for the outside diameter and wall thicknesses of the sleeves.
6.
Provide a copy of WCAP-12522, "Inconel Alloy 600 Tubing - Material Burst and Strength Properties."
7.
Wher e did the properties tabulated in Table 3-2 for Alloy 690 come from?
1.e., Young's Modulus through Specific Heat anq S,.
a.
Section 3.1.10 the sleeve analysis yield strength - 37 ksi and ultimate strength - 91 ksi. ASME SA-163 Alloy 690 list yield strength - 40 ksi (Reg Guide 1.85 Rev. 28) ultimate strength -
?.
b.
Are the actual heats known that will be used for the sleeves?
What are the S, and S,7 8.
Identify the units for Figure 3-18.
What values result when going from figure 3.18 to Figure 3.19 using Westinghouse data?
9.
Which curve, in Figure 3-17, is mada from the measured data (solid squares or open squares)? Which side of ta" measured data line is the 95%
confidence line?
- 10. Identify which weld width Beaver Valley will be using.
Please provide a more in-depth discussion of weld width (Section 3.1.13).
What are the trade-off;7 What are the restrictions? What forces were considered?
-