ML20149F099

Notice of Violation from Insp on 940515-0625.Violation Noted:On Certain Occasions,Porc Failed to Review Plant Operations to Detect Safety Hazards,As Evidenced by Listed Examples

ML20149F099
Person / Time
Site:	Vermont Yankee
Issue date:	08/04/1994
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
Shared Package
ML20149F094	List: IR 05000271/1994013 ML20149F089 ML20149F099
References
50-271-94-13, NUDOCS 9408100003
Download: ML20149F099 (2)

Text

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ENCLOSURE 1 ,

NOTICE OF VIOLATION Vermont Yankee Nuclear Power Corporation Docket No. 50-271 Vermont Yankee Nuclear Power Station License No. DPR-28 During an NkC inspection conducted from May 15 to June 25, 1994, a violation of NRC requirements was identified. In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C, the violation is listed below:

Technical Specification 6.2.A.6 requires that the Plant Operations Review Committee (PORC) review plant operations to detect any potential safety hazards. ,

Contrary to the above, on certain occasions the PORC failed to review plant operations to detect safety hazards, as evidenced by the following examples:

1. On April 6,1994 the PORC reviewed a safety significant condition involving reactor l coolant system leakage (RCS) into the " A" core spray (CS) subsystem, which had existed since the October 25, 1993 plant start-up from Refueling Outage XVII. This review  ;

included an assessment of operability for the subsystem and corrective actions that relied l upon an existing alarm response procedure. The PORC review failed to detect that  !

implementation of this procedure would result in three operational safety issues involving )

the loss of a low pressure piping high pressure alarm; the acceptability of the pressure rating and quality of a pressure switch required to retain RCS pressure; and marginal differential pressure opening capabilities of closed CS injection valves required to automatically open in response to accident conditions. This latter issue resulted in the "A" CS subsystem being inoperable for 81-hours following the implementation of the alarm response procedure.

2. On February 10,1994, plant operators, in respouse to a loss of the vital fire suppression water supply system, cross-connected thir fire water system to the service water system.

The PORC did not review this plant operating condition for the purposes of detecting potential safety hazards. Subsequently, it was determined that the cross-connection of the systems resulted in the inability to provide needed service water to imponant safety-related equipment during accident conditions.

In the aggregate, this is a Severity Level IV violation (Supplement I).

Pursuant to the provisions of 10 CFR 2.201, Vermont Yankee is hereby required to submit a written statement of explanation to the U.S. Nuclear Regulatory Commission, ATTN:

Document Control Desk, Washington, D.C. 20555 with a copy to the Regional Administrator, Region I, and a copy to the NRC Resident Inspector at the facility that is the subject of this Notice, within 30 days of the date of the letter transmitting this Notice of Violation (Notice).

This reply should be clearly marked as a " Reply to a Notice of Violation" and should include for each violation: (1) the reason for the violation, or, if contested, the basis for disputing the 9408100003 940804 PDR G

ADOCK 05000271 PDR OFFICIAL RECORD COPY

Enclosure 1 2 violation, (2) the corrective steps that have been taken and the results achieved, (3) corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved. If an adequate reply is not received within the time specified in this Notice, an order may be issued to show cause why the license should not be modified, suspended, or revoked, or why such other action as may be proper should not be taken. Where good cause is shown, consideration will be given to extending this response time.

Dated at J(ine of Prussia. Pennsylvania this 4th dry of Aucust,1994 l

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