ML17258B057
| ML17258B057 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/22/1981 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8105270250 | |
| Download: ML17258B057 (3) | |
Text
I RSOULATORY OIFORMATION DISTRIBUTION SYRM (RIBS)
ACCESSION NBR:8105270250 DOC ~ DATE: 81/05/22 NOTARIZED:
NO DOCKET FACIL':50-244 Robert Emmet Ginna Nuclear PlantR Unit 1R Rochester G
05000244 AUTH BYNAME AUTHOR AFFILIATION MAIERgJ ~ E, Rochester Gas 8 Electric Corp ~
RECIP ~ NAME:,
RECIPIENT AFFILIATION CRUTCHFIELDRD.
'perating Reactor s Branch 5
SUBJECT:
Informs of error contai 11.End"of"cycle burnup assumed<thereby reducin distribution is well wi DISTRIBUTION CODE: A001S, COPIES TITLE: General Distribution for NOTES: 1 copy:SEP Sect'dr.
ned in 810311 ltrire length of Cycle for Cycle 10 was-greater than g car ryover reactivity. Power thin Tech Specs, RECEIVED:LTR ~ ENCL
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VOCCa 89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E.
MA IER VICE PRESIDENT TCLCPHONC ARcA cooc. Tlo 546-2700 May 22, 1981 cp> y Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U. S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Cycle 11 Reload R.
E. Ginna Nuclear Power Plant Docket No. 50-244 l
IaINT 88\\885~
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Dear Mr. Crutchfield:
Our letter dated March 11, 1981 described our plans for Ginna Cycle 11, which will commence following the April 1981 refueling outage.
In that letter we stated that Cycle 11 had been designed for a length of 9200 MWD/MT assuming a Cycle 10 length of 8600
(+700 to -600)
MWD/MT.
The actual end-of-cycle burnup for Cycle 10 was 9688 MWD/MT; therefore, Cycle 11 was reanalyzed.
Appropriate analyses were also performed in a timely manner for the Cycle 10 coastdown.
Cycle 11 was reanalyzed for a Cycle 10 burnup to 9800 MWD/MTU.
The extended Cycle 10 burnup decreased slightly the carryover reactivity for Cycle 11; therefore, Cycle 11 length will be slightly less than 9200 MWD/MT. All parameters were within previously accepted bounds.
The power distribution is well within Technical Specification limits.
The neutronic character-istics are within the bounds used in the Plant Transients and ECCS analysis.
The Cycle 11 discharge burnup remains below 33300 MWD/MT batch average.
Therefore, extending Cycle 10 burnup to 9800 MWD/MT has no impact on the safety analysis for Cycle 11 which was done with a Cycle 10 burnup of 8600
(+700 to -600)
MWD/MT.
Very truly yours, J.
E. Maier SX DSCVO QCo
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