ML20204B347

Notice of Violation from Insp on 981109-1218.Violation Noted:Train B Emergency Chilled Water Sys Was Inoperable on Two Separate Periods (980806-26 & 0904-25),while Units 2 & 3 Were in Mode 1.No Action Was Taken to Restore Operability

ML20204B347
Person / Time
Site:	San Onofre
Issue date:	03/16/1999
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20204B328	List: ML20204B320 ML20204B347
References
50-361-98-18-01, 50-361-98-18-1, 50-362-98-18, EA-98-563, NUDOCS 9903220080
Download: ML20204B347 (2)

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l ENCLOSURE l NOTICE OF VIOLATION Southern California Edison Co. Docket Nos.: 50-361 San Onofre Nuclear Generating Station 50-362 License Nos.: NPF-10 NPF-15 EA 98-563 During an NRC inspection conducted on November 9 through December 18,1998, a violation of NRC requirements was identified. In accordance with the " General Statemen* oo licy and Procedure for NRC Enforcement Actions," NUREG-1600, the violation is listet m w:

San Onofre, Units 2 and 3, Technical Specification 3.7.10 requires that while either unit is in Modes 1,2,3, or 4, two emergency chilled water trains shall be operable. The action statement requires that, with one emergency chilled water train inoperable, the train be restored to operable status within 7 days or that the units be in Mode 3 in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in Mode 5 in 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

Contrary to the above, the Train B emergency chilled water system was inoperable on two separate periods (August 6 through 26,1998, and September 4 through September 25,1998), while Units 2 and 3 were in Mode 1, and action was not taken to either restore the train to operable status within 7 days or place the units in Mode 5 within the following 'M hours. The train was inoperable during the first period due to maintenance, an incorrectly set electrical demand switch, and noncondensable gases in the refrigerant; during the second period due to maintenance, and a miswired low chilled water temperature cutout switch. (01013)  !

This is a Severity Level 111 violation (Supplement 1).

The NRC has concluded that information regarding the reason for the violation, the corrective actions taken and planned to correct th a vioihtion and prevent recurrence and the date when full compliance was achieved is already adequately addressed on the docket in inspection Report Nos. 50-361/98-18; 50-362/98-18, in Licensee Event Reports98-020 and 98-021, and in your correspondence dated February 11 and 16,1999. However, you are required to submit a written statement or explanation pursuant to 10 CFR 2.201 if the description therein does not accurately reflect your corrective actions or your position. In that case, or if you choose to respond, clearly mark your response as a " Reply to a Notice of Violation," end send it to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555 I with a copy to the Regional Administrator, Region IV,611 Ryan Plaza Drive, Suite 400, j Arlington, Texas 76011, and a copy to the NRC Resident inspector at thu facility that is the subject of this Notice, within 30 days of the date of the letter transmitting this Notice of Violaticn (Notice).

I If you contest this enforcement action, you should also provide a copy of your response, with the basis for your denial, to the Director, Office of Enforcement, United States Nuclear Regulatory Commission, Washington, DC 20555-0001.

9903220000 990316 PDR ADOCK 05000'361 i 3 PDR i

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I If you choose to respond, your response will be placed in the NRC Public Document Room (PDR). Therefore, to the extent possible, the response should not include any personal privacy, proprietary, or safeguards information so that it can be placed in the PDR without redaction. If personal privacy or proprietary information is necessary to provide an acceptable response, then please provide a bracketed copy of your response that identifies the information that should be protected and a redacted copy of your response that deletes such information. If you request withholding of such material, you must specifically identify the portions of your response  ;

that you seek to have withheld and provide in detail the bases for your claim of withholding I (e.g., explain why the disclosure of information will create an unwarranted invasion of personal I privacy or provide the information required by 10 CFR 2.790(b) to support a request for (

withholding confidential commercial or financialinformation). If safeguards information is l necessary to provide an acceptable response, please provide the level of protection described l in 10 CFR 73.21. i Dated this 16th day of March 1999 i

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