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=Text=
=Text=
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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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ANNIVF EiL',A RY December 10, 1973 os m am.c m
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U.S. Atomic Energy Cornmission up -
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==Dear Mr. Kruesi:==
==Dear Mr. Kruesi:==
6,, V :" i,            .
.' S 5NilC In conformance with paragraph 50.55(e) of 10 CFR 50, this k,h-[.
                                                                                                                                .' S 5NilC In conformance with paragraph 50.55(e) of 10 CFR 50, this                                       k,h-[.
(;3t ft;g,4 :.;
(;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':.;
is submitted as an interim report on a design deficiency Q'
Browns Ferry Nuclear Plant units 2 and 3. Initial report i
in the control logic of HPCI and RCIC systems of our Mfy Browns Ferry Nuclear Plant units 2 and 3.
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 ' '
Initial report of this deficiency was made to AEC-DRO Region II on Q: m ' Q' i
a complete loss of plant electrical power would have caused                               kNf l
74 ' c ' '
the HPCl and RCIC to be inoperable until manally reset.                                               '<
November 10, 1973.
ki'
Had this deficiency not been discovered, kNf a complete loss of plant electrical power would have caused
{f:;t [.~( .,( '
' ki' the HPCl and RCIC to be inoperable until manally reset.
  ,                        We are continuing to analyze the safety implications                                                           .
{f [.~(.,( '
1 associated with thie problem and we are making design changes                               } ft           'gg~
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                                                                                                                                ?gG'rf to these control systems. We will supply a final report
:;t We are continuing to analyze the safety implications associated with thie problem and we are making design changes
                                                                                                                        ?               l 7. ,
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1 to these control systems. We will supply a final report
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on this problem to you by January 10, 1974.
on this problem to you by January 10, 1974.
kt?                   T; Very truly yours,                                    $)b.@..
kt?
                                                                                                                          / '. cU f 5
T;
$)b.@.. f Very truly yours,
/ '. cU 5
Ch ly.;
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J. E. Gilleland                                                     k Assistant to the Manager of Power                      j[j$.n?$
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CC:   Mr. Norman C. Moseley, Director                                                           _A?fh i
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Directorate of Regulatory Operations                                                 i~ .'%
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U.S. Atomic Energy Commission Region II - Suite 818 230 Peachtree Street, NW.
Mr. Norman C. Moseley, Director i~.'%
i Directorate of Regulatory Operations U.S. Atomic Energy Commission Region II - Suite 818 230 Peachtree Street, NW.
Atlanta, Georgia 30303 l
Atlanta, Georgia 30303 l
8311090192 730725 PDR ADOCK 05000259
8311090192 730725 PDR ADOCK 05000259 S
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Latest revision as of 02:59, 14 December 2024

Interim Deficiency Rept on Design Deficiency in Control Logic of HPCI & RCIC Sys.Initially Reported on 731110. Analysis Continuing.Final Rept Will Be Submitted by 740110
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)
v • d • e


Text

-

p..c r

n

9,,

e.

TENNESSEE VALLE U T H O AIT Y "~~ M 7 '

CH ATTANOOGA, "ENNESSEE 4

374CY1 U 3#.

M.U., f. ; a,

,r 1

fin G. l

.,.f n 1: L.

E <\\,9I' ' -

%g y a

ANNIVF EiL',A RY December 10, 1973 os m am.c m

'.c c> -

PA A T N r_ n S H a r) p2 My-

_h 4

..$'lh m

0f

  • A q Vbi.. W)>T /

g1 f.g.

s$ r..v -%p a y

.x

, ;c c x er p v

..u%

V%yLA 9:.; *La.

csc

- y,4;..-. 8 3.(S N'h Mr. F. E.

Kruesi, Director Directorate of Regulatory Operations

'.c N. s #

. $ " iM'.*

U.S. Atomic Energy Cornmission up -

ik b.%w Tyh.j Wauhington, DC 205h) f 6,, V :" i,

Dear Mr. Kruesi:

.' S 5NilC In conformance with paragraph 50.55(e) of 10 CFR 50, this k,h-[.

(;3t ft;g,4 :.;

is submitted as an interim report on a design deficiency Q'

in the control logic of HPCI and RCIC systems of our Mfy Browns Ferry Nuclear Plant units 2 and 3.

Initial report of this deficiency was made to AEC-DRO Region II on Q: m ' Q' i

74 ' c ' '

November 10, 1973.

Had this deficiency not been discovered, kNf a complete loss of plant electrical power would have caused

' ki' the HPCl and RCIC to be inoperable until manally reset.

{f [.~(.,( '

l

t We are continuing to analyze the safety implications associated with thie problem and we are making design changes

} ft 'gg~

1 to these control systems. We will supply a final report

. ?gG'rf

?

l 7.,

on this problem to you by January 10, 1974.

kt?

T;

$)b.@.. f Very truly yours,

/ '. cU 5

Ch ly.;

C tc>s g

J. E. Gilleland j[j$.n?$

k Assistant to the Manager of Power w

gg

%. (p i.

_A?fh CC:

Mr. Norman C. Moseley, Director i~.'%

i Directorate of Regulatory Operations U.S. Atomic Energy Commission Region II - Suite 818 230 Peachtree Street, NW.

Atlanta, Georgia 30303 l

8311090192 730725 PDR ADOCK 05000259 S

PDR

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M T

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