ML20055D538

Notice of Violation from Insp on 891030-1130.Violation Noted:Setpoints for Emergency Diesel Generator Air Sys Compressor Start Setpoint Not Sufficient

ML20055D538
Person / Time
Site:	San Onofre
Issue date:	06/29/1990
From:	Richards S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20055D537	List: ML20055D536 ML20055D538
References
50-361-89-200, 50-362-89-200, NUDOCS 9007090071
Download: ML20055D538 (2)

Text

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b 4-NOTICE OF VIOLATION Southern California Edison Company Docket Nos.: 361, 50-362 -

San Onofre Units 2 and 3 License Nos.: NPF-10 NPF-15 During an NRC inspection conducted between October 30 and November 30, 1989, 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", the violations are listed below:

A. 10 CFR Part 50, Appendix B, Criterion III requires that measures be established to ensure that the design basis is. correctly translated into specifications, drawings, procedures,'and instructions . i 10 CFR Part 50, Appendix B, Criterion V' requires that activities  ;

affecting quality be accomplished in accordance with appropriate

-instructions or procedures.

Contrary to the above:

1. At the time of the inspection, the fuel oil; day tank low level (pump

. start and alann) setpoints of- 25.2.+ 1. inch were not sufficient to ensure a minimum 325 gallons of fueT in the diesel day tank, as required by Sections 3.8.1.1.b.1 and 3.81.2.b.1 of' the San Onofre Units 2/3 Technical Specifications.

2. At the time of the inspection, the calibration procedures for.the diesel fuel oil day tank and storage tank level indicators'were inappropriate in that they.did not include the information necessary for equating-indicated level in the tanks to.the actual tank-level-t or fuel volume. In addition, procedures for calibrating the fuel oil storage tank level indicators were insufficient to ensure that I

the storage tank volumes required by the Technical' Specifications'-

were being maintained.

This is a Severity Level IV Violation (Supplement I),-applicable to Units 2 and 3.

L . B. 10 CFR.Part 50, Appendix B, Criterion III requires that measures bE L established to ensure that the design basis is correctly translated into specifications, drawings, procedures, and instructions.

Contrary to the above, the setpoints for the emergency diesel-generator l air system compressor start setpoint (182 psig) and air receiver low L pressure alarm setpoint (165 psig) were not sufficient'to ensure five l cranking cycles of the diesel generators as described in paragraph 9.5.6.2.1.3 of the Units 2/3 FSAR. Both of chese setpoints were belowL i the 195 psig established during preoperational testing as the minimum l pressure to ensure five cranking cycles. j This is a Severity Level IV Violation (Supplement I), applicable to j Units 2 and 3.- '

9007090071 900629 POR ADOCK 05000361 o PDC

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,,- J C. 10 CFR Part 50 Appendix B, Criterion V,-requires that activities affecting quality be prescribed by documented instructions, .

1 procedures or drawings and are accomplished in accordance with 1 these instructions, procedures, or drawings. .

Procedure No. S023-I-2.11, Revision 6. TCN 6.4, " Diesel Generator 1 Surveillance Inspection," Paragraph 6.4.5.3.5.1, requires piston-to- l head clearance measurements to be subtracted from one another when  !

determining diesel engine piston-to-head clearance. I Contrary to the above, diesel engine piston clearance measurements were improperly evaluated during reassembly of the diesel generators for  ;

Units 2 and 3 during the 1989 and 1005 refueling outages respectively.

Specifically, the piston-to-head measurements were improperly subtracted.

from those of a previous octage rather than from those taken on the opposite side of each piston at thit time.

This.isaSeverityLevelIVViolation(SupplementI),applicableto Units 2 and 3.

Pursuant to the provisions.of-10 CFR 2.201, Southern California Edison Company is hereby required to submit a written statement of explanation to ,

the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, I Washington, DC, 20555 with a copy.to the Regional Administrator, Region V,. l and a copy to the NRC Senior Resident Inspector, San 0nofre, 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 address, for violation A.2 above: (1) the basis for the conclusion in your April 24, 1990 letter that the diesel fuel oil storage tanks'have sufficient 1 margin to accommodate any additional errors that may be , identified, and (2) specifi-cally, the basis for SCE's confidence that the fuel inventory requirements-stated in Technical Specification 3.8.1 are met at all times.' Our review of the responses provided in your April 24 letter indicates that you have taken or initiated appropriate corrective. actions for violations A.1, B, and C of this Notice; consequently, no additional response is required for= these violations. 'If an adequate reply is- not received within the time specified i in this Notice, an order may be issued to show cause why the license should i

.. 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 I

response time for good cause shown.

/ l Dh S. A. Richards, Chief "

i Reactor Projects' Branch e Dated at Walnut Creek, California

! this-Mday of June,1990.

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