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| {{#Wiki_filter: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. | | {{#Wiki_filter:}} |
| 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.
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| 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)):
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| l (0,1.00), (36. 7,1,00), and (50,0.87). It was recently learned that 50 d'4D/MTU
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| ! 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.
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| 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 pop}}
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