ML17258A930

Forwards Incore Data Comparing Differences in Measured & Predicted Power Between Mixed Oxide & U Assemblies,In Response to Amend 32 to Provisional License DPR-18

ML17258A930
Person / Time
Site:	Ginna
Issue date:	03/30/1981
From:	Maier J ROCHESTER GAS & ELECTRIC CORP.
To:	Crutchfield D Office of Nuclear Reactor Regulation
References
NUDOCS 8104070486
Download: ML17258A930 (6)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) 0 ACCESSION NBR!8104070486 DOCQDATE! 81/03/30 NOTARIZED!'O DOCKET'ACIL':50 244 Robert Emmet Ginna Nuclear Planti: Unit" ir Rochester G

05000244 AUTH INANE AUTHOR AFFILIATION MAIERgJ ~ E ~'ochester Gas S Electr ic Corps.

REC IP ~ NAME<

RECIPIENT'FFILIATION CRUTCHFIELDrD ~

Oper a ting Reactor's Br anch 5

SUBJECT.;. For wards INCORE data compar ingd) fferences in measur edI 8

pnedicted power be*tween mixed ox)de-8 U assemblie@i,)n response to Amend 32 to Provisional License OPR 18.

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89 EAST AVENUE, ROCHESTER, N.Y. I4649

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JOHN E.

MAIER VICE PRESIDENT March 30, 1981 Director of Nuclear Reactor Regulation Attention:

Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.

5 U.S. Nuclear Regulatory Commission Washington, D.C.

20555'CLCPHONC ARCA COOC 710 546-2700 t(

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/'ub ject:

Comparison of Predicted versus Measured Power Levels Differences for MOX and Uranium Assemblies R. E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Crutchfield:

In accordance with Amendment No.

32 to Provisional Operating License No. DPR-18 for the R.E. Ginna Nuclear Power Station, the attached INCORE data comparing differences in measured and

,predicted power between MOX and uranium assemblies is presented.

This, data is from four peripheral core positions where measurements were taken during Cycle 10.

.With the exception of

startup, the power levels of the MOX assemblies are consistently overpredicted by a small amount.

The difference between the measured and predicted power for the mixed oxide assemblies, as represented by the mean, is within the range of differences for uranium assemblies located in similar regions of the core.

The level of uncertainty in the prediction as measured by the standard deviation is approximately.1.5 percent greater for the MOX assemblies.

The MOX assemblies will remain on the 'core periphery at less than core average power for Cycle 11.

Attachment Very truly yours, J.

E. Maier Pool il(

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MAP BURNUP D BANK MWD/MTU POSITION DIFFERENCE B~lEEN MEASURED AND PREDICTED RELATIVE POWER MOX ASSEMBLY URANIUM ASSEMBLY POSITIONS POSITIONS M7 G13 A8 Hl X-1 X-2 X-3 X-4 X-5 X-6 X-7 X-8 X-9 X-10 X-ll X-12 X-13 X-14 X-15 X-16 X-17R X-18 X-19 X-20 X-21 X-22 X-23 X-24 X-25 X-26 X-27 X-28 X-29 X-30 HZP*

HZP*

25% Power*

50% Power*

70% Power*

70$ Power*

70% Power*

100%Power*

586 983 1442 1903 2603 3029 3029 3029 3500 4223 4919 4919 4919 5535 5931 6394 7100 7100 7100 7500 7700 8100 ARO 0

88 117 145 128 150 219 205 217 216 214 212 223 196 224 215 217 224 200 225 224 221 219 224 200 225 224 220 221

-4.603

-6.317 6.367 4.875 3.772 5.746 3.171

.814

.149

.140

.606

-1.374

-2.190

-2.985

-2.051

-3.278

-1.169

-5.210

-3.289

-2.770

-4.846

-2.890

-2.173

-2.338

-2.969

-2.972

-3.200

-2.874

-3.046

-2.839

-8.887

-7.525 4.231 3.879 3.753 4.378 2.693

-2.730

-2.960 2.138

-2. 21,1

-1.829

-2.662

-2.113

-1.761

-2.542

-1.093

-4.039

-4.702

-3.688

-3.700

-3.846

-3.719

-2.814

-4.369

-3.738

-4.585

-3.804

-4.011

-4.011

.130

-1.321 2.178

4. 203

2. 326 1.204 4.220 3.974

.063

4. 643 3.839

4. 656 2.447 3'. 142 3.903 4;564 3.331 4.024 3.425 3.487 3.309 5.234 5.340 1.823 1.021 2.118 1.521 1.035 1.316 5.099

-1.785

-2.459

.255 2.070 1.344 1.020 1.394

-1.369

.308

-1.205

-2.591

-2.268

-3.184

-2.867

-3.263

-2.801

-2.669

-2.519

-3.968

-3.214

-3.641

-3.725

-3.013

-3.058

-3.675

-3.324

-4.193

-4.345

-3.902

-3.900 MEAN SDEV

-1.418 3.196

-2.209 3.306 2.875 1.707

-2.256 1.804

• Initial startup testing with burnup less than 200 MWD/MTU

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