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 DOCDATE: 04/i8/78 NRC RQCHESTER GAS 8( ELEC 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 DISTRIBUTQR INITIAL: X JM INITIAL'~

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

<DISTRIBUTION CODE A007)

FOR ACTION:

INTERNAL: REG FILE+4W/ENCL NRC PDR++W/ENCL EEB++W/ENCL BALLARD~~~W/ENCL J. COLLINS+4 W/ENCL KREGER++W/ENCL KASTNER4 4 W/ENCL EXTERNAL: LPDR~S ROCHESTER> NY++W/ENCL TIC>~W/ENCL NS I C4 4~W/ENCL ACRS CAT B>+W/ENCL DISTRIBUTION: LTR 20 ENCL 20 CONTROL NBR: 78i i60i78 SIZE: iP+3P w

THE END

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muzzy izzard' uzzsiltl jiiiiiiiiiiiiii ROCHESTER GAS AND ELECTRIC CORPORATION o 89 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D. WHITE, JR. TELEPHONE VICE PRESIDENT AREA CODE Tle 546 2700 April 18, 1978 CU I "I En cnt.','I

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XEO Director of Nuclear Reactor Regulation Attention: Mr. Dennis Ziemann, Chief C7 ITI ED Operating Reactors Branch o. 2 CA II.R. Nuclear Regulatory Commission .g]jiIIIIfgI Ma fbi Washington, DC 20555 Mg g

Dear Mr. Ziemann:

-

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 t Aoo

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 2 3 4 5 6 7 9 10 11 12 13 I I I I I I I I I I I I 0.546 0.552 0.56

-1.0 0.6 1.5

0. 636 - 009 l. 131 0. 824 1. 144 . 022 0. 647

-1. 1 -1. 0 -1. 0 -0.4 0.2 p.3 0.6

.471 1. 008 . 284 1. 117 0. 907 1.11 . 301 1. 025 0-479

-1.1 -1.1 -1. 1 -0. 2 -0. 5 -0. 0.3 0.6 0. 6 p.62g 0.998 0. 979 -130 1.244 0.980 1.24 .134 1- 006 1- 025 0. 646

-., 2.2 -2.2 2 2 ~ -0.3 0.3 0.5 0. 0.0 0.5 0.4 0.4 0'.gg7 1.270 l. 111 1- 255 1. 178 0. 978 l. 17 .266 1.141 1.305 1.024

-2. 2 -2. 2 2~2 -1.2 -0.3 -0.1 -0. -0.3 0.4 0.4 0.4

.556 1.152 1.095 l. 215 1-162 1.034 1-230 1.159 1.222 1.107 1.148 ~ 568 1.1 0 -2 ' 2~2 9 -1.4 2 -1.7 -1.1 0.7 3.3

.551 0.831 o.914 0. 969 0. 961 1. 224 1. 049 1.20 0.944 0.949 0.888 0.82 .563 0' 1.0 p 9 0 4 -0. 6 0 -1.8 6 -2. -3.8 -2.7 -2.4

~ 0.7 3.3 G

.556 l. 152 l. 131 1.254 1.182 1 043 1.236 1.02 1-150 1.217 1.096 1.13 0.568 1.1 1.0 1.0 0.9 03 -06 07 -2. -2.9 -2.1 -2.1 -0. 3.3

1. 03 1. 315 l. 147 27g 1 185 0 980 1.19 1-268 1.118 1.269 0.99 Oi2 1.2 1.2 0.9 p 7 p,p 0. -0.2 -1.6 -2.3 -2.

0. 692 1. 098 l. 050 1.173 1.242 p.g8p 1.25 1.139 0.993 1.004 0.62

3. 5 0.1 7.6 7.6 4.9 0.5 1. 0.5 -0.8 -1.6 -2.

0. 517 1. 101 1.408 1-204 0.918 1.10 1.269 76 p 992 0 474~

8.4 8.0 85 08 -1. -2.2 -0.6

0. 703 1.110 1.140 0.827 1.10 0.963 0.605 9.4 8.9 -0.2 -0.0 -F 1 -5.5 -5.8 0.550 0.548 0. 54

-0.2 -0.2 -2. ~

~F~

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N Difference between measured and predicted I I I I I I I I I 1 2 3 4 5 6 7 9 10 11 12 13 90~

Meas-Pred Pred il l7 FIGURE 3,

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~

2704 1 2 3 4 8 7 8 9 10 11 12 13 I I I I I I i I I I I I I

0. 0. 589 0. 578 5.6 3.8 2.6

0. 690 l. 051 1.171 0.852 .137 1.031 0 ~

5.6 5.6 5.7 3.2 2.6 3.6 6.

s.s4

1. 081 1.334 1. 109 0. 875 1. 104 l. 329 1.087 .535 5.6 1.1 -0.7 . 0.7 5.2 6. 6.2 0.646 1.011 1.002 1.148 1. 207 0. 949 1. 229 1.162 1 03 ~ . 016 0.648

-1.3 -1.3 -1.3 1.2 -2.1 -4.1 -0.3 2.4 .. 1. -0. 9 -0.9 0.983 1.248 1.123 1. 270 1. 201 0.99 1.145 1.244 1.12 .253 0. 986

-1.3 -1.3 -1.3 -0.1 0.2 -2. -4.5 -0. -0.9 -0. 9 0.552 1.086 1.083 1.219 1.184 1. 068

-1.8 -1.8 1. 24 1. 038 1.152 1.20 . 087 1.087 0-547

-1.3 -1.3 -1.4 -1.5 -2. -4. 2 4.1 -2. -0. 9 -1.8 180

0. 554 0.808 p.864 0 974 0. 988 1.226 1.06 1.211 0 965 0.96 0. 871 p.8p8 0.549

-1.8 -1.8 -1.9 -1.6 -2.8 -3.9 -4.

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-5.1 -5. 1 -2. -1. 1 2 7 G

0.551 1.086 1.077 1.222 1.181

-1.8 -1.8 -1.8 -1.0 -1.6 l.-'4.039 1.19 1.008 1.171 1.23 1.108 1.105 p.547

-6. -7.1 -2.S 1.0 -0.2 -2.7 2 0-

0. 977 1. 241 1. 130 1.271 1.149 0.95 1.186 1.306 1.16 G299 1. 026

-1.8 -1.8 -0.6 0.1 -4.2 -6. -1.1 2.8 2.7 3.0 0'.517 0.674 1.055 1.034 1.149 1. 183 0.97 1.280 1.177 1 p3 1. 052 0. 674 30 30 18 1.3 -4 -1. 3.8 3 ' 2. 2.6 3.1 1.053 1. 300 1.13 0. 92 1. 164 1 330 1 06 0. 515 2.7 2.9 2 8 ~ 3. 5. 6.2 5.3 2.2

0. 670 1. 023 1. 08 l. 068 p,7p 2.6 2.8 2~

1. 3.7 149 7~3 7.

0. 55 0 55 p 573 2~

+ F N

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%Difference between measured and predicted i I I I I I I I 2 3 4 5 7 9 10 11 12 90' FIGURE 2 47 ~ I T

Startup Cycle 7 May 21, 1977 Core Condition Boron Worth Boron End oint Isotherm Temp. Coefficient**

Predicted Measured* Predicted Measured*

(ppm) (ppm) (pcm 'F) pcm 'F ARO -115 1382 1400 -3.4 3 ~ 23 D bank in -114 1296, 1321 -5. 0 -5.2 DSC bank in -114 1177 1207 -7.8 -8.25 Control Rod Bank Worth Bank Predicted Worth (%kg) Measured* (%Q) Measured (%hP)

Bank Cumulative Bank Cumulative Bank Cumulative

/ D 0. 754 0. 7'54 0.666 0.666 0. 711 0.711 DSC 1.047 1.801 0. 991 1.657 0.979 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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