ML18142A703

Response to NRC Request Consisting of Information Concerning Data Taken During the Startup of Cycle 7 at Subject Facility with Attachment Table Presenting Predicted Rod Worth and the Measured Rod Worths with and Without Control Rod

ML18142A703
Person / Time
Site:	Ginna
Issue date:	04/18/1978
From:	White L Rochester Gas & Electric Corp
To:	Ziemann D Office of Nuclear Reactor Regulation
References
Download: ML18142A703 (7)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM <RIDS)

DISTRIBUTION FOR INCOMING MATERIAL 50-244 I

REC:

ZIEMANN D L ORG:

WHITE L D NRC RQCHESTER GAS 8( ELEC DOCDATE: 04/i8/78 DATE RCVD: 09/26/78 DOCTYPE:

LETTER NOTARIZED:

NO COPIES RECEIVED

SUBJECT:

LTR i ENCL 1

FORWARDING RESPONSE TO NRC REQUEST CONSISTING QF INFO CONCERNING DATA TAKEN DURING THE STARTUP OF CYCLE 7 AT SUBJECT FACILITY...W/ATT TABLE PRESENTING PREDICTED ROD WORTH AND THE MEASURED ROD WORTHS WITH AND WITHOUT CONTROL RODS L8

8. K7 SWAPPED.

PLANT NAME: RE GINNA UNIT i REVIEWER INITIAL:

XJM DISTRIBUTQR INITIAL'~

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS ANNUAL ENVIRONMENTAL RPTS (OL STAGE>.

<DISTRIBUTION CODE A007)

FOR ACTION:

INTERNAL:

EXTERNAL:

REG FILE+4W/ENCL BALLARD~~~W/ENCL KREGER++W/ENCL LPDR~S ROCHESTER>

NY++W/ENCL TIC>~W/ENCL NSIC4 4~W/ENCL ACRS CAT B>+W/ENCL NRC PDR++W/ENCL EEB++W/ENCL J.

COLLINS+4 W/ENCL KASTNER4 4 W/ENCL DISTRIBUTION:

LTR 20 ENCL 20 SIZE:

iP+3P w

THE END CONTROL NBR:

78i i60i78

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89 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D. WHITE, JR.

VICE PRESIDENT TELEPHONE AREA CODE Tle 546 2700 April 18, 1978 Director of Nuclear Reactor Regulation Attention:

Mr. Dennis Ziemann, Chief Operating Reactors Branch o.

2 II.R. Nuclear Regulatory Commission

.g]jiIIIIfgI Washington, DC 20555 Ma fbiMg g

Dear Mr. Ziemann:

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- During conversations with members of the NRC staff, a revue'st" was made for data taken during the startup of Cycle 7 at the R. E. Ginna Plant.

This data reflects measurements taken with control rod LS operating as a D bank rod and rgd K7 operating as an A bank rod.

Figure 1 illustrates the F

obtained from the Incore reduction of Flux Map VII-3 which Rs take with the rods as described above.

Figure 2 illustrates the F>HIs with the rod swap corrected.

Also attached is a table which presents the predicted rod worth and the measured rod worths with and without control rods LS and K7 swapped.

Very truly yours, L. D. White, Jr.

,7Sl160i78 Aoo t

Cycle 7 Flux Map VII-3 D bank = 136 steps, 28% power, Control Rod L8 and K7 interchanged ROCHESTER GAS ANO ELECTRIC CORPORATION CORE MAP N

Measured F~H 2700 5

6 7

9 10 11 12 13 2

3 4

I I

I I

I I

I I

I I

I I

0.546 0.552

-1.0 0.6 0.56 1.5

0. 636

-1. 1

- 009 l.131 0. 824

-1. 0

-1. 0

-0.4

1. 144

. 022 0.2 p.3

0. 647 0.6

.471

-1.1 p.62g 0.998

-., 2.2

-2.2 0'.gg7 1.270

-2. 2

-2. 2

1. 008

-1.1

0. 979 2

~ 2 l.111 2 ~ 2

. 284 1. 117 0. 907

-1. 1

-0. 2

-0. 5

-130 1.244 0.980

-0.3 0.3 0.5 1-255 1. 178 0. 978

-1.2

-0.3

-0.1 1.11

-0.

1.24 0.

l. 17

-0.

. 301 0.3

.134 0.0

.266

-0.3

1. 025 0-479 0.6

0. 6 1- 006 1- 025 0. 646 0.5 0.4 0.4 1.141 1.305 1.024 0.4 0.4 0.4

.556 1.1

.551 1.0

.556 1.1 1.152 1.095 0

-2 '

0.831 o.914 p 9 0 ~ 4

l. 152 l.131 1.0 1.0

1. 03

1. 315 1.2 1.2

l. 215 2 ~ 2

0. 969

-0. 6 1.254 0.9 l.147 0.9 1-162 1.034 1-230 9

-1.4 2

0. 961 1. 224 1. 049 0

-1.8 6 1.182 1 043 1.236 03

-06 07 27g 1 185 0 980 p 7 Oi2 p,p 1.159 1.20 0.944

-2.

-3.8 1.02 1-150

-2.

-2.9 1.19 1-268 0.

-0.2 1.222 1.107 1.148

-1.7

-1.1 0.7 0.949 0.888 0.82

-2.7

-2.4 0.7 1.217 1.096 1.13

-2.1

-2.1

-0.

1.118 1.269 0.99

-1.6

-2.3

-2.

~ 568 3.3

.563 3.3 0.568 3.3 G

0'

0. 692 1. 098 7.6 7.6

0. 517 8.4

l. 050 4.9

1. 101 8.0

0. 703 9.4 1.173 1.242 p.g8p

3. 5 0.1 0.5 1.408 1-204 0.918 85 76 08 1.110 1.140 0.827 8.9

-0.2

-0.0 1.25 1.139 1.

0.5 1.10 1.269

-1.

-2.2 1.10 0.963

-F 1 -5.5 0.993 1.004 0.62

-0.8

-1.6

-2.

p 992 0 ~ 474

-0.6 0.605

-5.8 I

1 2

0.550 0.548

-0.2

-0.2 I

7 90~

I I

I I

5 6

3 4

0. 54

-2.

Meas-Pred Pred N

~F~

~

% Difference between measured and predicted I

I I

9 10 11 12 13 FIGURE 3,

il l7

ycle 7 Flux Map VIZ-4 D bank = 119 steps, 25% power, Control Rod Swap Corrected ROCHESTER GAS ANO ELECTRIC CORPORATION CORE MAP N

Measured F~

1 2

I I

3 4

I I

2704 8

7 8

9 10 11 12 13 I

I i

I I

I I

I I

0.

5.6

0. 589 0. 578 3.8 2.6

0. 690 5.6 l. 051 5.6 1.171 5.7 0.852

.137 3.2 2.6 1.031 0 ~

3.6 6.

1. 081 s.s4 1.334 5.6

1. 109 1.1

0. 875 1. 104

-0.7

. 0.7 l. 329 5.2 1.087 6.

.535 6.2 180 0.552

-1.8

0. 554

-1.8 0.551

-1.8 0.646 1.011 1.002

-1.3 -1.3

-1.3 0.983 1.248 1.123

-1.3 -1.3

-1.3 1.086 1.083 1.219

-1.8 -1.3

-1.3 0.808 p.864 0 974

-1.8 -1.9

-1.6 1.086 1.077 1.222

-1.8 -1.8

-1.0

0. 977 1. 241 1. 130

-1.8 -1.8

-0.6 0.674 1.055 1.034 30 30 18 1.148 1.2

1. 270

-0.1 1.184

-1.4

0. 988

-2.8 1.181

-1.6 1.271 0.1 1.149 1.3

1. 207

-2.1

1. 201 0.2

1. 068

-1.5 1.226

-3.9

l. 039

-'4. 2 1.149

-4.2

1. 183

-4

0. 949 1. 229

-4.1 -0.3 0.99 1.145

-2.

-4.5

1. 24

1. 038

-2.

-4. 2 1.06 1.211

-4.

-5.1 1.19 1.008

-6.

-7.1 0.95 1.186

-6.

-1.1 0.97 1.280

-1.

3.8 1.162 1 ~ 03 2.4

.. 1.

1.244 1.12

-0.

1.152 1.20 4.1

-2.

0 ~ 965 0.96

-5. 1

-2.

1.171 1.23

-2.S 0-1.306 1.16 2.8 1.177 1 p3 3 '

2.

. 016

-0. 9

.253

-0.9

. 087

-0. 9

0. 871

-1. 1 1.108 1.0 G299 2.7

1. 052 2.6 0.648

-0.9

0. 986

-0. 9 1.087 0-547

-1.8 p.8p8 0.549 2 7 1.105 p.547

-0.2

-2.7

1. 026 3.0

0. 674 3.1 G

0'.517 1.053 2.7 2.9

1. 300 2 ~ 8 1.13 3.

0. 92 1. 164 5.

6.2 1 330 1 06 5.3

0. 515 2.2

0. 670 2.6

1. 023 2.8

1. 08 2 ~

1. 149 3.7 l. 068 p,7p 7 ~ 3 7.

0. 55 2 ~

0 55 p 573 1.7 I

7 90' i

I I

I I

4 5

I 2

3

+

F N

%Difference between measured and predicted I

9 10 11 12 FIGURE 2 47 ~ I T

Startup Cycle 7

May 21, 1977 Core Condition Boron Worth Boron End Predicted oint Measured*

Predicted Measured*

Isotherm Temp. Coefficient**

ARO D bank in DSC bank in

-115

-114

-114 (ppm) 1382

1296, 1177 (ppm) 1400 1321 1207 (pcm 'F)

-3.4

-5. 0

-7.8 pcm 'F 3 ~ 2 3

-5.2

-8.25 Control Rod Bank Worth Bank Predicted Worth

(%kg)

Bank Cumulative Measured*

(%Q)

Bank Cumulative Measured

(%hP)

Bank Cumulative

/

D DSC

0. 754 1.047

0. 7'54 1.801 0.666

0. 991 0.666 1.657

0. 711 0.979 0.711 1.690

• indicates measurements done with control rod L8 operating as a

D bank rod and rod K7 operating as an A bank rod.

• • Doppler Coefficient is +1.9 pcm/'F

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