ML20129J260
| ML20129J260 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/04/1996 |
| From: | Wetzel B NRC (Affiliation Not Assigned) |
| To: | Richard Anderson NORTHERN STATES POWER CO. |
| References | |
| TAC-M93072, TAC-M93073, NUDOCS 9611060189 | |
| Download: ML20129J260 (4) | |
Text
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UNITED STATES 1
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j NUCLEAR REGULATORY COMMISSION
~f WASHINGTON. D.C. 20045 4 001 o
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- f November 4, 1996 Mr. Roger 0. Anderson, Director
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Licensing and Management Issues Northern States Power Company 414 Nicollet Mall Minneapolis, MN 55401
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING TECHNICAL SPECIFICATION (TS) SOLUBLE BORON CREDIT, PRAIRIE ISLAND NUCLEAR GENERATING PLANT UNIT NOS. 1 AND 2 (TAC NOS. M93072 AND M93073)
Dear Mr. Anderson The Nuclear Regulatory Commission staff is reviewing your proposed license amendment request dated July 28, 1995, which would revise the Prairie Island Units 1 and 2 TS to allow the use of credit for soluble boron in spent fuel pool criticality analyses and relocation of the spent fuel pool operating limits to the Core Operating Limits Report (COLR). The staff has identified the following five items of additional information that are required in order to complete its review.
The staff understands that you plan to revise your July 28, 1995, submittal based on changes that are being considered by the l
l Westinghouse Owner's Group for one of the related topical reports
(" Westinghouse Spent Fuel Rack Criticality Analysis Methodology, WCAP-14416,"
dated June 1995). You are rc:ibe: dea to provide additional information in your revised submittal that addresses the following issues.
1.
The staff does not concur with the proposed placement of the burnup vs.
initial enrichment figures (Fig. 7 & 8) or tables (Tables 1 & 2) or the 3x3 checkerboard cell storage configuration (Fig. 9) in the COLR. These are not COLR-type items since they do not appear to be items that will i
i change from cycle-to-cycle in the future.
In addition, the NRC should review any changes to these items. They should, therefore, be retained in the TS.
2.
TS 3.8.E.2 should refer to the normal fuel pool boron concentration (3250 ppm), which could be placed in the COLR.
l 3.
Proposed TS 5.6.A.1.b should also refer to the minimum boron less than or equal to 0.95 concentration required to maintain the k*'d5 if fully flooded with water l
limit (1380 ppm). For example, "k,,, s 0.
borated to 1380 ppm...."
4.
Figure 5 of the Prairie Island submittal for a 3x3 checkerboard l
configuration approaches a burnup limit of 45,000 MWD /MTU for OFA
[ optimized fuel assembly) fuel.
Since WCAP-14416-P (Table 6) indicates a positive bias above 40,000 MWD /MTU, axial burnup distribution ri effects should be included in the burnup credit limit.
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4 R. O. Anderson 5.
Discuss any changes in plant procedures if necessary to control pool boron concentrations and water inventory during both normal and accident conditions.
Please contact me at (301) 415-1355 if you have any questions.
Sincerely, TIL d2 Beth A. Wetzel, Project Manager Project Directorate 111-1 i
Division of Reactor Projects - III/IV l
Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306 l
cc:
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I R. O. Anderson November 4,1996 1
5.
Discuss any changes in plant procedures if necessary to control pool boron concentrations and water inventory during both normal and accident conditions.
Please contact me at (301) 415-1355 if you have any questions.
l Sincerely, l
Original signed by Beth A. Wetzel, Project Manager l
Project Directorate 111-1 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306 cc:
See next page 1
i DISTRIBUTION:
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- E" = Copy with attachment / enclosure "N" = No copy l
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OFFICIAL RECORD COPY r
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0 Mr. Roger 0. Anderson, Director Prairie Island Nuclear Generating Northern States Power Company Plant i
cc:
J. E. Silberg, Esquire Shaw, Pittman, Potts and Trowbridge 2300 N Street, N. W.
Washington DC 20037 Plant Manager i
Prairie Island Nuclear Generating Plant Northern States Power Company 1717 Wakonade Drive East Welch, Minnesota 55089 Adonis A. Nebiett Assistant Attorney General Office of the Attorney General 455 Minnesota Street Suite 900 St. Paul, Minnesota 55101-2127 U.S. Nuclear Regulatory Commission Resident Inspector's Office 1719 Wakonade Drive East Welch, Minnesota 55089-9642 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Mr. Jeff Cole, Auditor / Treasurer Goodhue County Courthouse i
Box 408 l
Red Wing, Minnesota 55066-0408 Kris Sanda, Commissioner i
Department of Public Service 121 Seventh Place East l
Suite 200 St. Paul, Minnesota 55101-2145 Site Licensing Prairie Island Nuclear Generating Plant Northern States' Pnwer Company 1717 Wakonade Drive East Welch, Minnesota 55089 O(1ober 1996 l