ML20065G384
| ML20065G384 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/24/1982 |
| From: | Musolf D NORTHERN STATES POWER CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8210040123 | |
| Download: ML20065G384 (1) | |
Text
eff Northem States Power Cornpany 414 Nicollet *Aall Mnneapoh5. Mnnesota 55401 Telephone (612) 330 5500 September 24, 1982 Director Office of Muclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLAhT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Supplemental Information Related to License Amendment Request dated June 14, 1982 In response to NRC staff concerns on this license amendment, the following information is submitted for your review.
The document submitted on July 7, 1982 (XN-NF-81-06 Supplement 1) titled "LOCA ECCS Limiting Break and Exposure Sensitivity Analysis for ENC XN-1 and XN-2 Reloads at Prairie Island Unit 1 with Five Peretnt Steam Generator Tubes Plugged using ENC's WREM II A PWR Model" is applicable to both Prairie Island Units 1 and 2.
Thus the limits on the total peaking factor (Figure 1) apply to both units.
On June 14, 1982 Figure TS.3.10-7 was submitted. This figure is a graph of the normalized exposure dependent function (BU(E )) versus burnup for Exxon fuel. The graph was defined by the followingcodrdinates(burnup,EU(E)):
l (0,1.00), (36. 7,1,00), and (50,0.87).
It was recently learned that 50 d'4D/MTU might not be sufficient for the XN-2 fuel type. Therefore, we request that the coordinates be changed to:
(0,l.00),(36. 7,1.00) and (51,0.86 ).
Analysis j
has been performed to show that this curve will bound the current cycle fuel types for the exposures planned.
W i
David 'tusolf l
Manager of Nuclear Suppor Services DM?f/TMP/bd cc:
Regional Admin-III, NRC NRR Project Manager, NRC NRC Resident Inspector G Charnoff MPCA 0
Attn: J t' Fe rma n 8210040123 820924 PDR ADOCK 05000282 P
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