ML18044A575
| ML18044A575 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 02/26/1980 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8002280523 | |
| Download: ML18044A575 (2) | |
Text
consumers*
Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201 * (517) 788-0650 February 26, 1980 Director, Nuclear Reactor Regulation Att:
Mr Dennis L Ziemann, Chief Operating Reactors Branch No 2 US Nuclear Regulatory Commission Washing;ton, DC 20555 DOCKET 50-255 - LIC.EHSE DPR PALISADES PLANT -
RESPONSE TO WATER HOLE PEAKING QUESTION Consumers Power Company was requested by letter from Mr D L Ziemann (NRC) to Mr DA Bixel (CPCo) dated July 11, 1979, to submit information which wctLld provide assurance that water hole peaking was appropriately considered in the calculation of flux distributions.
On September 10, 1979, the requested response was submitted to the NRC containing a comparison between Exxon Nuclear Company's PDQ model and the casmo program which was r.un at Consumers
- Power Company.
During a meeting held in Bethesda, Maryland, on November 15, 1979,.Mr Bruce Webb of Consumers Power Company was informed by Messrs Cy Weiss and Themas Alexin, both of the NRC, that the information submitted on September 10, 1979, vas insufficient; however, a comparison between the PDG. ar.d a Monte Carlo calculation for the Palisades Plant would be acceptable.
The attached figure represents such a comparison for an octant of a Palisades Plant Reload H Assembly with the intersection of the wide water gaps at the upper left corner, center, and lower right corner of an assembly.
Four e?J,ergy
- groups with Mixed Number Density (MND) thermal cross sections yielded the clos-est agreement with the Monte Carlo calculatior. for t'he heterogeneous Palisades Plant lattice.
This method will be used in the evaluetion of peaking factors for future fuel cycles at the Palisades Plant.
David P Hoffman Nuclear Licensing Administrator page CC:
jGKeppler, USNRC
I I
- 1. 223 I 1.121 1.078
- 1. 083 0.0
- l. 072 1.032 1.017" I.
- 1. 240+.03 1.105+. 02 1.072+.01 1.072+. 01 0.0 1.072+;01 1. 0302:_. 01 1. 0232:_. 02
-1. 37 1.45 0.56 1.03
-0.09 0.19
-0.59 1.013
.961
- 1. 097 1.118
- 1. 114.
1;070 1.042
- 1. 020+. 02.957+.0l 1.081+.0l 1.115+.02 1.131+.0l 1.059+.0l 1
- 0]62:..:_ 02
-0.69 0.42 1.48 0.27
-1.50 1.04 0.58*
.897 1.006 1.026
- o.o 1.003
.968.
.904+.0l
. 999~. 01 1.063+*.01 0.0 1.021+.0l.969+.02
-0. 77 0.70
. -3.48
-1. 76
-0.10
.962
.958
. 962
.938
.917
.985+.02
.973+.0l
.943+.0l.931+.0l
.913+.02
-2.34
-1.54 2.01 0.75 0.44
.915
.900
.890
.884
.906+.02
.911+.0l.892+.0l
.885+.0l 0.99
-1. 21
-0.22
-0.11 4 Gr MND PDQ
.879
.876
.878 XMC
.885+.0l.864+.01
.856+.02 P8Q (XMC -l) 100
-0.68
- 1. 39 2.57
.890
.909
.884+.02
.907+.02 0.68 0.22 0.0
- Guide Sar Location 0.0
- Pali sades H Fuel, XMC vs PDQ 4-gr MND