ML20246B576

Notice of Violation from Insp on 881021-890410.Violation Noted:Refrigerant (Freon) Levels Necessary to Assure Operability of Emergency Chillers Were Not Properly Translated Into Procedures

ML20246B576
Person / Time
Site:	San Onofre
Issue date:	06/22/1989
From:	Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20246B574	List: IR 05000361/1989019 ML20246B570 ML20246B576
References
50-361-89-19, 50-362-89-19, NUDOCS 8907100013
Download: ML20246B576 (2)

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APPENDIX A j NOTICE OF VIOLATION Southern California Edison Company- Docket Nos. 50-361 50-362 San Onofre Units 2 and 3 License Nos. NPF-10

, NPF-15 l

During an NRC inspection conducted on October 21, 1988 through February 17

, and on April 10, 1989 (Inspection Report Nos. 50-361/88-35and50-362/88-37),  ;

violations of NRC requirements were identified. In accordance with 10 CFR Part.2, Appendix C, " General Statement of Policy and Procedure for NRC Enforcement Actions," 53 Fed. Reg. 40019 (October 13,1988), the violations are listed below:

A. 10 CFR 50, Appendix B, Criterion XVI states that measures shall be established to assure that conditions adverse to quality, such as fail-ures,' malfunctions, deficiencies, deviations, defective material and equipment, and nonconformance are promptly identified and corrected.

Contrary to the above requirement, the licensee determined on April 2, 1988 that the Freon level in emergency chiller ME-336 was low, as docu- j mented on deficiency tag #084348, and this condition was not properly '

evaluated and corrected until May 6, 1988. Failure to promptly correct this deficiency may have resulted in inoperability of emergency chiller I l ME-336.

This is a Severity Level IV violation (Supplement I). I B. 10 CFR 50, Appendix B, Criterion III states that measures shall be established-to assure that the basis for those structures, systems, and 1 components that prevent or mitigate the consequences of postulated I accidents are correctly translated into specifications, drawings, procedures, and instructions.

Contrary to the above, the refrigerant (Freon) levels necessary to assure operability of the Units 2 and 3 emergency chillers were not ,

properly translated into procedures and instructions. Prior to May 6, 1988, the applicable procedure did net establish Freon level limits i associated with the level in the sight glasses when the units were in the  !

shutdown condition. Subsequent to May 6, 1988, analyses performed by the l licensee showed that, to assure operability of the emergency chillers, the Freon level in the sight glass (with the unit shut down in excess of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) should be greater than (1) 2 to 2 1/2 inches, as a function of component cooling water temperature, to ensure proper chiller unit operation, and (2) greater than 1.6 inches to provide the design basis 320 tons of cooling capacity.

This is a Severity Level IV violation (Supplement I).

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i Pursuant to the provisions of 10 CFR 2.201, Southern California Edison <

Company is hereby required to submit a written statement or explanation to l the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555 with a copy to the Regional Administrator, Region V, and a copy to the NRC Senior Resident Inspector, San Onofre, within 30 days of ,

the date of the letter transmitting this Notice. This reply should be  !

clearly marked as a " Reply to a Notice of Violation" and should include for i each violation: (1) the reason for the violation if admitted, (2) the corrective steps that have been taken and the results achieved, (3) the 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. Consideration  ;

may be given to extending the response time for good cause shown. j FOR THE NUCLEAR REGULATORY COMMISSION WMC B. E Faulkenberry  !

Deputy Regional Adm nistrator Dated at Walnut Creek, California this g oday of % e , 1989 l

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