ML19208B833

Forwards RO 77-005

ML19208B833
Person / Time
Site:	Cook
Issue date:	02/12/1977
From:	Jurgensen R INDIANA MICHIGAN POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19208B784	List: 05000155/LER-1978-007-03, /03L-0:on 780209,during Routine Test Operation of Emergency Diesel Generator,Unit Tripped on High Water Temp After 25 Minutes of Operation.Caused by Leakage of Cooling Water Pump Shaft Packing Causing Cooling Sys Suction Los 05000155/LER-1978-008-01, /01T-0:on 780215,during Maint of Reactor Depressurization Sys Control Circuitry,Fire Pump Control Switches Inadvertently Placed in Inhibit Position Incorrectly.Control Switches Marked W/Instructions 05000155/LER-1978-010-01, /01T:on 780217,during Review of Electrical Equipment Required for Loca,Steam Drum Low Level Switches Deemed Inadequate for High Temp Environ.Caused by Reactor Protection Sys Not Being Evaluated 05000255/LER-1978-007-01, /01T-0:on 780313,during Sealing of Electrical Connectors Located Inside Containment,Sockets &/Or Sealing Plugs Were Discovered Missing from Connectors.Caused by Connector Holes Not Being Filled During Wiring 05000255/LER-1978-033-01, /01T-0:on 781025,during 15-day Isolation of Waste Gas Decay Tank,Part of Tank Contents Leaked Out.Caused by Faulty Pressure Instrumentation.Instrumentation Recalibr 05000255/LER-1978-040-01, /01X-1:on 781128,during Venting of Waste Gas Surge Tank,Leakage Resulted in Gaseous Release W/O 15-day Holdup Time.Cause Under Evaluation.Rept Will Be Issued by 790105, Not 780105 as Previously Reported 05000255/LER-1978-041-01, /01T:on 781214,dtermined That Insufficient High Pressure Safety Injection Flow Would Be Delivered to Core in Event of Small Break Loca.Caused by Redundant High Pressure Safety Injection Header Being Valved Out of Svc 05000316/LER-1978-026-11, /01T-0:on 780502,during Change from Mode 5 to Mode 4,pumps Became Inoperable When Containment Spray Pump Control Switches in Pull Were in Lockout Position.Caused by Procedural Inadequacy & Personnel Error 05000316/LER-1978-045-03, /03L-0:on 780612,following Addition of Boric Acid to Borated Water Sys,Boron Injection Tank Boron Concentration Found to Be Below Limits.Caused by Chemical Technician Error ML19208B783 ML19208B793 ML19208B794 ML19208B801 ML19208B802 ML19208B805 ML19208B806 ML19208B811 ML19208B814 ML19208B833 ML19208B836 ML19208B840 ML19208B843 ML19208B845 ML19208B848
References
RTR-REGGD-01.016, RTR-REGGD-1.016 NUDOCS 7909210469
Download: ML19208B833 (1)

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,,,,. INDIANA & MICH10AN POWER COMPANY _

DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 February 12, 1977 Mr. J. G. Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 Operating License DPR-58 Docket No. 50-315

Dear Mr. Keppler:

Pursuant to the requirements of Appendix A Technical Specifications and the United States duclear Regulatory Commission Regulatory Guide 1.16, Revision 4, Section 2.b, the following report is submitted:

RO 50-315/77-05 Sin:erely,

& R. W. Jurgensen Plant Panager RWJ/mj cc:

R. S. Hunter J. E. Dolan G. E. Lien

'R. J. Vollen BPI R. C. Callen MPSC K. R. Baker R0: III R. Walsh, Esq.

P. W. Steketee, Esq.

G. Charnoff, Esq.

7 9 092104d G. Olson J. M. Hennigan

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R Kei th i

9VDM Dir., IE (30 copics)

Dir., MIPC (3 copies) 390081 FEB 161977