ML20135B175

Monthly Operating Rept for June 1985

ML20135B175
Person / Time
Site:	Cook
Issue date:	06/30/1985
From:	Climer, Will Smith INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8509100456
Download: ML20135B175 (7)

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I)OCKET NO.

50-315 .

t n UNIT SlH311M)WNS ANin N)WLM NEing 1g)ss ~

UNIT NAME D.C. Cook Unit 1 llATE 7-6-85

-. ~ COMPl.ETEll hY B.A. Svensson utN)RIMONiil June, 1985 * - TEl.EPilONE 616/465-5901 e.

.3E 'E ji iiccuscc Ps,, ., _ Cause A Causective N i. Date .k

.E g N 3sg 1:vens g,? g3 Acu.wi ses F yE sE j ;y, g Nep.w e in O g' Psevent Heciuscuce d ,

246 850406 S 720 B&C 2 N.A. 24 ZZZZZZ The Unit was removed from service on 850406 for the scheduled Ten-Year 1

ISI and Cycle VIII - IX Refueling l Outage. The core is unloaded and the inspection of the reactor vessel and lower core internals is complete

- with no reportable indications found.

Estimated return to service date is 850807.

4 t

i 2 3 4 17: 12.uccJ Neas.wi: MethuJ: limlabis G Instsucci.uis 1 Manual los Psepas asioni ul~ 134 .:

S: SilicJuicJ A l'aguapuncr.: I;aeline (1 mplain)

R Mainsenance e iTess 2 Manual Scians. lintiy Slicens sin 1.icenwe C Refuchig 3- Autoniatic & sani. lIvent Repswa il l'RI l'ile INilRl:G-

1) Mcgulasoey Ressiicinami -l Olltes Ilimplain) 0161)

IV)pesasos I'sainingi licenw 1:manisaatiswa 5

ILAdnanissoassve G Opciaisonal I.a sus llimplaisil latabst I - Sanne Souice ps/D1 11 Helic: llisplamil  ;

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.' Dockst No.: 50-315

• Unit N; mas D.C. Cook Unit 1 Completed By: A. S. Puplis Telephone: (616) 465-5901 Date: July 8, 1985

, Page: 1 of 1 MONTHLY OPERATING ACTIVITIES - JUNE, 1985 HIGHLIGHTS:

! The Unit is currently'in the 10 Year ISIz and Cycle 9 Refueling Outage.

There was no electrical generation in the month of June.

Summary:

6-01-85 At 2312, an inadvertant safety injection was received when switching'from the normal vital instrument bus power supply,_CRID II, to the backup supply while maintenance was being performed on pressurizer Channel I.

6-07-85 At 1436, NIS Source Range Channel N-32 was declared inoperable due to water leaking into the detector housing.

a 6-15-85 At 1144, the core barrel was removed from the reactor vessel. At 1225, the core barrel was placed in its storage place. ,

6-23-85 At 1136, Train."A" blackout testing was commenced.

The Unit 1 Control Room Cable' Vault Halon System was inoperable as of 1400 on 4-05-83. The backup CO 2 system for the control Room Cable Vault remains operable.

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i DOCKET NO. 50 - 315 UNIT NAME D. C. Cook - Unit No. 1 DATE 7-6-85 COMPLETED BY B. A. Svensson MAJOR SAFETY-RELATED MAINTENANCE JUNE, 1985 M-1 CCW-183W (CCW Outlet Valve from "W" RHR Heat Exchanger) leaked by.

New valve installed due to condition of seat on original valve.

M-2 While performing an ISI hydro, a leak was discovered on the East RHR Heat Exchanger tube sheet flange. Gasket was replaced.

M-3 CCM-451 (CCW from RCP's oil coolers) leaked over guidelines in Per-formance's STP.203. Seat was beyond repair - new valve was instal-led and tested for operability.

M-4 IRV-111 (Fill Line to #1 Accumulator) was discovered to be leaking by during Hydro-ISI.024. Valve was disassembled and cage seat was lapped to plug. Valve was also repacked. IRV-lll was tested for operability after repairs.

C&I-l The CD-1 battery charger was not keeping the CD battery charged.

Three silicone controlled rectifiers were replaced which corrected the problem.

C&I-2 Diesel Generator ICD, air to turbo-charger pressure reducing valve, XRV-228, was not performing correctly causing a safety valve to operate. A metal fragment was found in the internals. The seat and cone were relapped and the pressure reducing valve tested satis-factorily.

4

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yst= 5 S YY S S S-Donaks C. Cook Nuclear Plant Y

P.O. Bau 458. Bridgman. Mchsgan 49106

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j July 6, 1985 Director, Office Of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:

Pursuant to the requirements of Donald C. Cook Nuclear Plant Unit 1 Technical Specification 6.9.1.6, the attached Monthly Operating Report for the Month of June, 1985 is submitted.

Sincerely, 0)

W. G. Smith, Jr.

Plant Manager WGS:ab Attachments cc: J. E. Dolan M. P. Alexich R. W. Jurgensen-NRC Region III B. L. Jorgensen R. O. Bruggee R..C. Callen S. J. Mierzwa F, S. VanPelt, Jr.

P.-D. Rennix D. R. Hahn Z. Cordero-J.-J. Markowsky S. R. Khalil J. T. Stietzel-PNSRC File INFO Records Center ANI Nuclear Engineering Department t-9 i\