ML20140C407

Forwards Rev 1 to Zion Nuclear Station Recovery Plan, in Response to CAL RIII-97-02 & Suppl to CAL RIII-97-02,dtd 970414.Ltrs Concerned Actions to Be Taken at Zion Station in Preparation for Restart Following Reactivity Event

ML20140C407
Person / Time
Site:	Zion File:ZionSolutions icon.png
Issue date:	06/05/1997
From:	Mueller J COMMONWEALTH EDISON CO.
To:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20140C413	List: ML20140C407 ML20140C415
References
CAL-RIII-97-02, CAL-RIII-97-2, NUDOCS 9706090251
Download: ML20140C407 (2)

Text

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1 June 5,1997 Mr. A. B. Beach l Regional Administrator l NRC Region lli 801 Warrenvilla Road Lisle, Illinois 60532-4351

Subject:

Zion Station Unit 2 Recovery Plan

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Reference:

Confirmatory Action Letter, Rlll-97-002, from A. B. Beach (USNRC) to J. H. Mueller (Comed), dated February 25,1997, and 1 Supplement dated April 14,1997.

Dear Mr. Beach:

This is in response to Confirmatory Action Letter (CAL No. Rlll-97-002) dated l February 25,1997, and the Supplement to Confirmatory Action Letter Rlll 002 dated April 14,1997, both from A. B. Beach of the NRC to J. H. Mueller of Comed. These letters concerned actions to be taken at the Zion Station in preparation for restart following the reactivity event during the shutdown of Zion Unit 1 on February 21.1997. Following this event, the involved licensed operations and shift personnel were removed from licensed activities on i February 24,1997. Unit 1 was placed in.co!d shutdown on February 25,1997, j and both Units have since been maintained in cold shutdown.

Subsequent to this event, Comed chartered a Level I investigation to provide an ( l independent investigation of the actions taken during the shutdown of Unit 1. , 7pa i

The purpose of the investigation was to determine the root cause(s) of the event 4 i and to recommend corrective action. The results of the Level I investigation were J(

transmitted to the NRC by letter dated April 18,1997 from J. H. Mueller to A B.

Beach.

In addition to the Comed investigation of this event, the NRC directed that an ., k Augmented Inspection Team (AIT) be formed to determine the causes,  !

conditions, and circumstances relevant to the event and communicate its findings, safety concerns, and recommendations to NRC management. The AIT conducted its inspection between February 25 through March 7,1997, and transmitted its findings to Comed by letter dated April 29,1997, from A. B.

Beach to Thomas J. Maiman of Comed.

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Comed has evaluated the results of these comprehensive assessments of the causes of the reactivity event, and the generic deficiencies that may have contributed to it, and has developed the enclosed Zion Nuclear Station Recovery Plan (Recovery Plsn). The Recovery Plan is based on critical analyses of the reactivity event and contains the essential actions necessary to address and I

close-out the items identified in the Confirmatory Action Letter. These actions are in bold italics in the narrative summary portion of the plan and are shaded in the detailed action plans.

In addition to the actions identified in the Recovery Plan which resolve the issues identified in the Confirmatory Action Letter, Comed has included other improvement actions anticipated for completion prior to restart. As the Recovery Plan is implemented, Zion management will continue to review these improvement actions and emerging issues and adjust the Recovery Plan as appropriate.

As discussed at our recent public meeting, we would appreciate meeting with the NRC's Zion Restart Panel at your earliest convenience to discuss the Recovery Plan and actions required for the safe startup and subsequent operation of Zion Unit 2. If you have any questions or desire further information, please contact me at 847-746-2084 extension 3600 or Mr. Timothy O'Connor at extension 3009.

Sincerely, f

Ibb J hn H. Mueller '

Site Vice President Zion Station Enclosure l cc: Zion Restart Panel, USNRC Region ill Senior Project Manager, USNRC - NRR Project Directorate lil-2 Senior Resident inspector, Zion Station l Office of Nuclear Facility Safety - IDNS USNRC Document Control Desk l

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