ML20211L269

Notice of Violation from Insp on 860928-1108.Violations Noted:Containment Personnel Airlock Door Interlock Mechanism Failed on 860830 & Allowed Both Containment Doors to Be Open at Same Time

ML20211L269
Person / Time
Site:	Diablo Canyon
Issue date:	12/09/1986
From:	Mendonca M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20211L265	List: IR 05000275/1986029 ML20211L269
References
50-275-86-29-01, 50-275-86-29-1, NUDOCS 8612150408
Download: ML20211L269 (1)

Text

4 4-Appendix A Notice of Violation Pacific Gas and Electric Company Docket No. 50-275 77 Beale Street,' Room 1451 License No. DPR-80 San Francisco, California 94106 As a result of the inspection conducted during the period of September 28 i through November 8, 1986 ar.d in accordance with NRC Enforcement Policy (10 CFR Part 2 Appendix C), the following violation was identified.

A. 10 CFR 50. Appendix B, Criterion KVI " Corrective Action" states in part that " Measures shall be established to assure that conditions adverse to quality, such as failures....are promptly identified and corrected." "In

'the case of significant conditions adverse to quality, the measures shall assure that the cause of the condition is determined and corrective action taken to preclude repetition."

Contrary to the above, the containment personnel airlock door interlock mechanism failed on August 30, 1986 and allowed both containment doors to be open at the same time. Similar interlock failures had previously occurred on February 28, 1984 and May 16, 1985 and interlock failures continued subsequent to the August 30, 1986 event on October 3 and October 17, 1986. As evidenced, appropriate corrective action had not been taken to preclude recurrence.

This is a Severity Level IV Violation (Supplement I) applicable to Unit 1.

Pursuant to the provisions of 10 CFR 2.201, Pacific Gas and Electric Company is hereby required to submit to this office within thirty days of the date of this Notice, a written statement of explanation in reply including: (1) the corrective steps which have been taken and the results achieved; (2) the corrective steps which will be taken to avoid further items of noncompliance; and (3) the date when full compliance will be achieved. Consideration may be given to extending your response time for good cause shown.

DEC9 1986

%x1 Dated M. M. Mendonca, Chief Reactor Projects Section 1 8612150408 861209 gDR ADOCK 05000275 PDR ,

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