ML20203Q120

Part 21 Rept Re Itt General Controls Hydramotor Actuators Leaking Hydraulic Fluid.Initially Reported on 860418.Cause of Leakage Currently Being Evaluated.Evaluation Expected to Be Completed by 860602

ML20203Q120
Person / Time
Site:	Davis Besse
Issue date:	04/30/1986
From:	Williams J TOLEDO EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-86, REF-PT21-86-150-000 1-632, PT21-86-150, PT21-86-150-000, NUDOCS 8605090021
Download: ML20203Q120 (2)

Text

_

o. .

MS MXEDO Docket No. 50-346 l"[]lCj[g[Q License No. NPF-3 JOE VVLUAMS. Jn s.,, w. %w,uw Serial No. 1-632 pm na zoo emumn April 30, 1986 Mr. James G. Keppler, Regional Administrator United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60317

Dear Mr. Keppler:

On April 18, 1986, Mr. Rod Cook of Toledo Edison notified Mr. Nick Jackiv of NRC Region III of a potential 10CFR21 concerning ITT General Controls Hydramotor Actuators (Models NH91/95). These devices are utilized as Ventilation System Damper Controls that modulate ambient atmosphere conditions in areas where safety-related equipment such as the Emergency Diesel Generator and Component Cooling Water Pumps and associated instrumen-tation are located.

There are 22 ITT General Controls Hydramotor Actuators in use in safety-related applications at Davis-Besse. Table I identifies the location of the subject components installed at this facility.

Based upon the investigations conducted to date, Toledo Edison has experienced leakage of hydraulic fluid from two of thirteen of these actuators that have been recently tested. This leakage could result in making the hydramotor actuator inoperable. The causes of the observed leakare are currently being evaluated by the Toledo Edison Company to determine the extent of the deficiencies and corrective actions. This evaluation is expected to be completed by June 2, 1986.

This letter is being submitted to confirm the April 18 telephone discussion and to inform the NRC that we are continuing to evaluate the situation. Upon completion of our evaluation, we will inform you of the results and, if required, provide appropriate notification as specified in Title 10.

Very truly yours, y

CAB:RMC p1f eeusuvuuM1 860430 PDR ADOCK 05000346 S PDR Attachment cc: DB-1 NRC Resident Inspector MAY 51996 8/

THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISCN AVENUE TOLEDO. OHto 43652 1

.. e ITT GENERAL CONTROLS HYRAMOTOR ACTUATOR AT DAVIS-BESSE AE f LOCATION HV 4906 Control Room Emergency Ventilation System (EVS)

HV 4907 Control Room EVS HV 5000A EVS 1-1 Discharge HV 5000B EVS 1-1 Recire HV 5014A EVS 1-2 Discharge HV 5014B EVS 1-2 Recire HV 5305 Low Voltage Switchgear (LVSC) Room 1 Discharge HV 5314 LVSG Room 2 Discharge HV 5329A Emergency Diesel Generator (EDG) Room 1 Intake HV 5329B EDG Room 1 Recire HV 5329C EDG Rocm i Discharge HV 5336A EDG Room 2 Intake HV 5336B EDG Room 2 Recirc HV 5336C EDG Room 2 Discharge HV 5443A Component Cooling Water (CCW) Pump Room 1-1 Discharge HV 5443B CCW Pump Room 1-1 Recire HV 5443C CCW Pump Room 1-1 Intake HV 5444A CCW Pump Room 1-2 Discharge HV 5444B CCW Pump Room 1-2 Recire HV 5444C CCW Pump Room 1-2 Intake HV 5597 Battery Room 1 Ventilation HV 5598 Battery Room 2 Ventilation l

l

\ --