ML20247A819

Forwards LERs89-004,89-005,89-006,89-007,89-008,89-009 & 89-010

ML20247A819
Person / Time
Site:	Cooper
Issue date:	03/20/1989
From:	Horn G NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20247A825	List: 05000298/LER-1989-004, :on 890216,emergency Diesel Generator Trouble Alarm Received Due to Inadvertent Actuation of Safety Shutdown Valve Overspeed Trip Lever.Caused by Personnel Error.Responsible Supervisor Counseled 05000298/LER-1989-005, :Ac Voltage Regulation Concerns Identified During NRC Insp on 870511-0619.Caused by Inadequate Design. Design Change 88-263 Will Install Annunciation on 69 Kv Line to Alert Operator If Line Voltage Cannot Support ECCS 05000298/LER-1989-006, :Control Bldg HVAC Design Concerns Identified During NRC Insp on 870511-0619.Caused by Inadequate Design. Steps to Install Permanent Essential Equipment That Will Provide Acceptable Room Temps Being Pursued 05000298/LER-1989-007, :on 890217 Svc Water Sys Flowrate Concerns Associated W/ Original Sys Design Identified During NRC Insp NRC Insp on 870511-0619.Caused by Inadequate Design. Reduction of Diesel Generator Room Temps Being Pursued 05000298/LER-1989-008, :Insufficient Operator Guidance to Assure Adequate Svc Water Flow During Design Basis LOCA Identified During NRC Insp on 870511-0619.Caused by Procedural Deficiency.Procedures Revised 05000298/LER-1989-009, :Svc Water Sys Inservice Testing Concerns Identified During NRC Insp on 870511-0619.Cause Not Stated.Inservice Testing Program Procedure for Pump Testing,Providing Specific Trending Guidance,Upgraded 05000298/LER-1989-010, :Diesel Generator Room Ambient Temp Control Inadequacies Identified During NRC Insp on 870511-0619. Caused by Error in Original Plant Design.Design Change 87-132 Provided Permanent Mod to Eliminate Deficiency ML20247A819
References
CNSS895626, NUDOCS 8903290200
Download: ML20247A819 (1)

Text

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CNSS895626 March 20, 1989

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U.S. Nuclear Regulatory Ccmmission Document Control Desk Washington, D.C.

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Dear Sir:

The following listed Cooper Nuclear Station Licensee Event Reports are forwarded as attachments to this letter.

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l LER 89-004 LER 89-005 LER 89-006 LER 89-007 LER 89-008 l

LER 89-009

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LER 89-010

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i Sincerely, l

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.c Ow%

G.

orn Div ion Manager of Nuclear Operations i

Cooper Nuclear Station cn GRH:sg Oso ONQ N o n.

Attachment (9 o 00 gy cc:

R. D. Martin L. G. Kunci 8d R. E. Wilbur gg V. L. Wolstenholm ose G. A. Trevors N

INP0 Records Center l Og ANI Library l coa.m NRC Resident Inspector R. J. Singer CNS Training

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CNS Quality Assurance

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FR E EMpWI u_x 1

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