ML18219D509

Letter Abnormal Environmental Occurrence of Chlorine Residual at the Circulating Water Discharge Exceeded 0.10 Ppm for a Ten Minute Period

ML18219D509
Person / Time
Site:	Cook
Issue date:	07/28/1977
From:	Shaller D Indiana Michigan Power Co, (Formerly Indiana & Michigan Power Co)
To:	James Keppler NRC/IE, NRC/RGN-III
References
Download: ML18219D509 (4)

Text

U.S. NUCLEAR REGULATORY COM ION NRG'FORM 18S I2.7S I NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL DOCKET NUMSER TO:

Mr. J G>> Keppler FROM:

Indiana

& Michigan Power Company

Bridgman, Michigan D>>V>> Sheller DATE OF DOCUMENT 7/28/77 DATE RECEIVED 8/1/77

%LETTER OORIGINAL

~OP Y DESCRIPTION 0 MOTO R IZ E D

~ UN C LASS I F I E D PROP INPUT FORM ENCI OSURE NUMBER OF COPIES RECEIVED I

~'onfirming telephone conversation on 7/27/77 concerning an abnormal environ occurrence re chlorine residual z at the circulating water dis'charge exceeding 0>>10 ppm for a ten minute period>> ~ ~ ~ ~

PLANT NAME:

Cook Unit No>>

1 RJL 8/2/77 T MANAGER:

(e~N~N (1-P)

FOR ACTION/INFORMATION ASSIGNED AD:

BRANCH CHIEF:

PROJECT MANAGER:

ENVIRHNMENTAL MOORE LTR EN ING ASSXSTKVl'.

LICENSING ASSISTANT:

B>>

HARLESS INTERNALDISTRIBUTION TFMS SAFETY HEINEMAN E

E PLANT SYSTEMS TEDESCO BENAROYA SITE SAFETY &

ENVIRON ANALYSIS DENTON & MULLER ENGINEERING IPPOLITO OPERATING REACTORS ENVIRO TECH ERNST BALLARD BLOOD TIC e

VA CHECK AT I A TZMAN BERG EXTERNAL DISTRIBUTION NSIC BUTLER RI GAMMILL 2

SITE ANALYSIS VOLLMR BUNCH J ~ COLLINS CONTROL NUMBER R

IV J

HANCHETT 16 CYS ACRS SENT CAT GO Y NRC FORM 19d (2 7dl 772aeO232

A

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~Keen'mama 8 aaleHmau aowEa t;aeaaeY DONALD C. COOK NUCLZAR PLANT P.O. Box 458, Bridgman, Michigan 49106 July 28, 1977 0

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8.'r.

J.G.

Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region II I 799 Roosevel t Road Glen Ellyn, I<

60137 gS

Dear Mr. Keppler:

I g

@pe g)CLED Rt-Operating License DPR-58 Docket No. 50-315 This is to confirm our telephone call to Hr.

R. 'l<arnick, NRC Region III, at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on July 27, 1977.

During this conversation we reported that an abnormal environmental occurrence had taken place at 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br /> on July 27,

1977, when the chlorine residual at the circulating water discharge exceeded 0.10 ppm for a ten minute period.

During this ten minute interval the chlorine residual was 0. 10 - 0. 12 ppm which violates Appendix B Technical Specifications Section 2.2. 1.2.

A complete report of this event will be submitted by August 3, 1977.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

J.E.

Dolan R.'H. Jurgensen G.E. Lien R.

Ki 1 burn R.J.

Vollen BPI K.R. Baker RO:III-R.C. Callen MPSC P.H. Steketee, Esq.

R. Malsh, Esq.

G. Charnoff, Esq.

J.M. Hennigan G. Olson PNSRC J.F. Stietzel Dir., IE (20 copies)

Dir.; MIPC (2 copies)

Directorate of Licensing P7ZiqOZS-

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