ML20085M744
| ML20085M744 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, 05000000 |
| Issue date: | 12/10/1973 |
| From: | Gilleland J TENNESSEE VALLEY AUTHORITY |
| To: | Kruesi F US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20085M697 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8311090192 | |
| Download: ML20085M744 (1) | |
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TENNESSEE VALLE CH ATTANOOGA, "ENNESSEE U T H O AIT Y "~~ M 7 '
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ANNIVF EiL',A RY December 10, 1973 os m am.c m
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- y,4; . .- . 8 Mr. F. E. Kruesi, Director 3.(S' N'h Directorate of Regulatory Operations U.S. Atomic Energy Cornmission .'.c $up " N.
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Dear Mr. Kruesi:
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.' S 5NilC In conformance with paragraph 50.55(e) of 10 CFR 50, this k,h-[.
(;3t is submitted as an interim report on a design deficiency ft;g,4 in the control logic of HPCI and RCIC systems of our Mfy Q':.;
Browns Ferry Nuclear Plant units 2 and 3. Initial report i
of this deficiency was made to AEC-DRO Region II on Q: m ' Q' November 10, 1973. Had this deficiency not been discovered, 74 ' c ' '
a complete loss of plant electrical power would have caused kNf l
the HPCl and RCIC to be inoperable until manally reset. '<
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, We are continuing to analyze the safety implications .
1 associated with thie problem and we are making design changes } ft 'gg~
?gG'rf to these control systems. We will supply a final report
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on this problem to you by January 10, 1974.
kt? T; Very truly yours, $)b.@..
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J. E. Gilleland k Assistant to the Manager of Power j[j$.n?$
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CC: Mr. Norman C. Moseley, Director _A?fh i
Directorate of Regulatory Operations i~ .'%
U.S. Atomic Energy Commission Region II - Suite 818 230 Peachtree Street, NW.
Atlanta, Georgia 30303 l
8311090192 730725 PDR ADOCK 05000259
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