ML20011E815

Notice of Violation from Insp on 891212-900116.Violation Noted:Chlorine Detectors Associated w/122 Control Room Ventilation Sys Inoperable W/O Outside Air Dampers Closed

ML20011E815
Person / Time
Site:	Prairie Island
Issue date:	01/31/1990
From:	Axelson W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20011E812	List: IR 05000282/1989031 ML20011E815
References
50-282-89-31, 50-306-89-31, NUDOCS 9002220523
Download: ML20011E815 (1)

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NOTICE OF VIOLATION Northern States Power Company Docket Nos. 50-282, 50-306 7

As a result of the inspection conducted on December 12, 1989 through January 16, 1990, and in accordance with the " General Policy and Procedures for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1988), the following violation was identified:

Technical Specification 3.13.E.2 requires that if both chlorir.e detection channels for one train of ventilation are inoperable then within 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />s:

(1) Restore at least one channel to operable status, or (2) Operate the redundant ventilation system in the normal (non-recirculation) mode and close the outside air supply dampers for the affected train of ventilation.

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Contrary to the above, from approximately 7:00 p.m. on December 11, 1989, to approximately 6:15 a.m. on December 12, 1989, both chlorine detectors associated with the 122 control room ventilation systen were inoperable, without the outside air dampers being closed.

This is a Severity Level IV Violation (Supplement 1).

l-Pursuant to the provisions of 10 CFR 2.201, you are required to submit to this office within thirty days of the date of this Notice a written statement of explanation in reply, including for this violation:

(1) corrective action taken and the results achieved; (2) corrective action to be taken to avoid further violations; and (3) the date when full compliance will be achieved.

' Consideration may be given to extending your response time for good cause shown.

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Dated W. L. Axelson, Chief i_

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9002220523 900131 PDR ADDCK 05000282 G

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