ML18030B191
| ML18030B191 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/12/1986 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | Muller D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.2, TASK-TM GL-84-23, TAC-45116, TAC-45117, TAC-45118, NUDOCS 8603180214 | |
| Download: ML18030B191 (5) | |
Text
REGULATORY I RMATION DISTRIBUTION SYS
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ACCESSION NBR: Bb03180214 DOC. DATE: 8b/03/12 NOTARIZED:
NO FACIL: 50-R59 Hv owns Ferry Nucleav Powev Stations Unit ii Tennessee 50-2bo Hv owns Fer'rg Nuclear Powev Stations Unit 2i Tennessee 50-29b Browns Ferry Nucleav Power Stationi Unit 3.
Tennessee AUTH. NAME AUTHOR AFFILIATION GRIDLEYi R.
Tennes'see Valley Authov itM REC IP. N*ME RECIPIENT AFFILIATION MULLER'. R.
BWR Pv'o Ject Directov'ate 2
DOCKET 05000259 050002bo 0500029b
SUBJECT:
Fov wards addi v'esponse to Genev ic Ltr 84-23'Reactov Vessel Water Level Instv'umentat ion in BWRs" v'e mod plans 5
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DISTRIBUTION CODE:
A055D COPIEB RECEIVED: LTR ENCL SIZE:
TITLE: OR/Licensing Submittal:
Salem ATWB'vents QL-83-28 NOTES: NMBS/FCAF 1 c g.
1 c g NMBS/FC*F/PM.
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RECIPIENT ID CODE/NAME BNR PD2 PD 01 BNR EICSB CLARKE R HNR RBB ADM/LFMB IE/DI NRR BNR ADTS NRR PNR-A ADTS NRR/DSRO/RSIB NRR/TAMB RGN2 COPIES LTTR ENCL 3
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EXTERNAL: 24X NRC PDR a2 1.
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TOTAL NUMBER OF COPIES REQUIRED:
LTTR 37 ENCL 35
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TENNESSEE VALLEYAUTHORITY CHATTANOOGA, TENNESSEE 37401 5N 157B Lookout Place March 12, 1986 Director of Nuclear Reactor Regulation Attention:
Hr. D. R. Muller, Project Director BMR Project Directorate No.
2 Division of Boiling Mater Reactor Licensing U.S. Nuclear Regulatory'ommission Mashington, D.C.
20555
Dear Hr. Huller:
1n the Matter of the Tennessee Valley Authority Docket Nos.
50-259 50-260 50-296 By TVA letters dated April 8, 1985, July 15, 1985, and October 15,
- 1985, we kept the NRC staff informed of our plans for implementing the r'ecommendations of Generic Letter 84-23, Reactor Vessel Mater Level Instrumentation in BMRs, at Browns Ferry Nuclear'lant.
Enclosed is a discussion of our.. final modification plans and a schedule as requested by the generic letter.
If you need additional information, please get in touch with us through the Browns Ferry Project Manager.
Very truly yours, TENNESSEE VALLEY AUTHORITY g
R. t ridley Hanager of Licensing Enclosure cc (Enclosure):
Hr. R. J. Clark U.S. Nuclear Regulatory Commission Browns Ferry Project Manager 7920 Norfolk Avenue
- Bethesda, Maryland 20814 U.S. Nuclear Regulatory Commission Region II ATTN:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NM, Suite 2900 Atlanta, Georgia 30323 8+03180214 8603><
PDR ADOCK 05000259 P
PDRl l
An Equal Opportunity Employer
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ENCLOSURE ADDITIONAL RESPONSE TO GENERIC LETTER 84-23 REACTOR VESSEL WATER LEVEL INSTRUMENTATION IN BWR'S BROWNS FERRY NUCLEAR PLANT Hi h Dr ell Te er ature The effects of high drywell temperature on level indications will be minimized by limiting the vertical drop of the reference legs inside the drywell to no more than two feet.
This will be accomplished by b i 'h r ngxng e reference legs outside the drywell at higher elevations utilizing a drywell ventilation penetration and an unused piping penetration.
This modification may also f
entail removing the heated reference leg temperature compensation from the wade range water level instrumentation.
This m dif'i o
xca on w ll be completed during the cycle 7 refueling outages on all three units.
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