IR 05000361/1997008

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-361/97-08 & 50-362/97-08 on 970421-25

ML20149G297
Person / Time
Site:	San Onofre
Issue date:	07/18/1997
From:	Howell A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Ray H SOUTHERN CALIFORNIA EDISON CO.
References
50-361-97-08, 50-361-97-8, 50-362-97-08, 50-362-97-8, NUDOCS 9707230106
Download: ML20149G297 (3)

Text

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0 AR LING ton, TE XAS 76011 8064 4'+9 . . . . * 9 July 18, 1997 I

I Harold B. Ray, Executive Vice President l Southern California Edison Co. I San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, California 92674-0128 l

SUBJECT: NRC INSPECTION REPORT 50-361/97-08;50-362/97-08

Dear Mr. Ray:

Thank you for your letter of June 20,1997, in response to our letter and Notice of I

Violation dated May 23,1997. We have reviewed your reply and find it responsive to the i concerns raised in our Notice of Violation. We will review the implementation of your corrective actions during a future inspection to determine that full compliance has been achieved and will be maintained.

Sincerely, l

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A'rthur T. Ho eli Ill, Director Division of Reactor Safety ,

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,l Docket Nos.: 50-361;50-362 License Nos.: NPF-10; NPF-15 l-cc:

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Chairman, Board of Supervisors County of San Diego 1600 Pacific Highway, Room 335 San Diego, California 92101

Alan R. Watts, Esq.

Woodruff, Spradlin & Smart 701 S. Parker St. Suite 7000 .

Orange, California 92868-4720

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Southern California Edison Co. -3-E-Mail report to T. Boyce (THB) 1 E-Mail report to NRR Event Tracking System (IPAS) l E-Mail report to Document Control Desk (DOCDESK)

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Regional Administrator Resident inspector DRP Director DRS-PSB Branch Chief (DRP/F, WCFO) MIS System Senior Project inspector (DRP/F, WCFO) RIV File Branch Chief (DRP/TSS) M. Hammond (PAO, WCFO)

WCFO File DRS Al 97-G-0056 l

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l DOCUMENT NAME: R:\_SO23\SO708AK.CJP To receive copy of document, indicate in box: "C" = Copy without enclosures "E" = Copy with enclosures "N" = No copy RIV:MB C:MB D:DRP l D:DR@ l l CJPaulk* DAPowers * TPGwynn * ATHdWMI Ill

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'Previously concurred OFFIC AL RECORD COPY I

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Southern California Edison Co. -2-- ,

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I Sherwin Harris, Resource Project Manager Public Utilities Department City of Riverside 3900 Main Street Riverside, California 92522 R. W. Krieger, Vice President Southern California Edison Company San Onofre Nuclear Generating Station

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, P.O. Box 128 l San Clemente, California 92674-0128

Dr. Harvey Collins, Chief Division of Drinking Water and Environmental Management California Department of Health Services P.O. Box 942732 l Sacramento, California 94234-7320 ll i

Terry Winter, Manager Power Operations San Diego Gas & Electric Company P.O. Box 1831 San Diego, California 92112 Mr. Steve Hsu l

Radiological Health Branch l State Department of Health Services l P.O. Box 942732

Sacramento, California 94234 l

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Mayor City of San Clemente 100 Avenida Presidio San Clemente, California 92672 Mr. Truman Burns \Mr. Robert Kinosian California Public Utilities Commission 505 Van Ness, Rm. 4102 San Francisco, California 94102 i

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SOUTHERN CAuf 0RN14 EDISON S*E";"" -

ha EDISON INTLRkarl0NAL Company June 20,1997

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U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C, 20555 Subject: Docket Nos. 50-361 and 50-362 Reply to a Notice of Violation San Onofre Nuclear Generating Station, Units 2 and 3 Reference: Letter, Mr. A. T. Howell lli (USNRC) to Mr. Harold B. RAY (Edison),

dated May 23,1997

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The referenced letter transmitted the results of NRC Inspection Report No. 60-361/9748;and

1. 50-362/97-08, conducted April 21-25,1997, at the San Onofre Nuclear Generating Station, Units 2 and 3. The enclosure to the referenced letter contained a Notice of Violation (9708-01), involving the failure to monitor in-process welding parameters. The enclosure tb

1. this letter provides Edison's reply to the Notice of Violation.

As noted in the reference, the welding procedure specification requirement to adhere to heat input limits was not implemented by appropriate guidance (i.e., measuring, monitoring, or training). Work organizations believed that if they followed their normal welding practices, ,

they would have been below the heat input limit. Edison has implemented interim heat input monitoring, and will evaluate further weld program enhancements.

If you have any further questions, please contact me.

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Sincerely,

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l Enclosure: Attached cc: E. W. Merschoff, Regional Administrator, NRC Region IV A. T. Howell, Director, Division of Reactor Safety, NRC Region IV K. E. Perkins, Director, Walnut Creek Field Office, NRC Region IV l

J. A. Sloan, NRC Senior Resident Inspector, San Onofre Units 2 and 3 M. B. Fields, NRC Project Manager, San Onofre Units 2 and 3

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e ENCLOSURE The enclosure to Mr. A. T. Howell's lettera dated ,

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es, in part:

May 23 1997 st t

' .. the most influential process ,

variables ng heat input, states, in part,are travel sp Voltage, for the purpose of heat input determination with this proca less

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joules perinch. Only amperage r

/travelspeed is 60,000 combin The following measures shall be taken to minimize - s mit ... shall bewelding used . []ind strictly to the specified limits in this WPS for interpass uced sensitization:

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Adhere and heat input

" Contrary to the above, on April 23,1997, the inspectors observed d welding performed on two Unit 3 safety-related for reactor coolant piping that measures for minimizing weldi uring gas tungstenreplacement arc pressure surement nozzles implemented. Specifically, the welding procedure ng-induced sensitization specificati were not variables had not been measured or monitored. on specified limits for heat input

"This is a Severity Level IV violation (Supplement 1) (50 362/9708

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-01)."

REPLY TO THE VIOLATION 1.

Reason for the Violation inadequate because it required .

a son's weldingspecific program was heat input lim to ensure the requirement was being met (i.e., measuring mo itered to witho

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been below the 60,000 joules per inch .

ces, they heat would have input limitorganiz Please note the referenced inspection report calculated for the

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heat input of approximately 61,200 joules perinch However the d t iweld

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(10 volts x 102 amps x 60 seconds / minutea adivided ,

by the n the inspection report dista inspection report uses a travel speed .

er calculated inof the 1 inch per minu inches per minute, based on the welder placing

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e actual travel a halfspeed circ is 1.18 build up with a diameter of approximately 0.75 inches in apumference weld b proximately 1 minute.

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Corrective Actions Taken and the Results Achieved

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On April 28,1997, Nuclear Oversight established interim monito i Standards,"was changed to include . .,

interim guidance eneral Welding parameters by welding engineers, and Nuclear Oversight Edison hasn oring follow-up surveillances on heat input monitoring (using tong t

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performed a number of to be in the range of 32,000 to 45,000 joules

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perinch esters), and found the heat input

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\ 2-3. Corrective Actions That Will Be Taken riate changes An Edison welding team will evaluate this i i / measuring).

issue andThis effort implement any approp b S ptember 30,1997.

necessary for final issue resolution (training and/or peri 4.

Date When Full Compliance Will be Achieved t blished an Full compliance was achieved on April 28,1997, when Nuclear Oversigh b interim monitoring program to address in-process welding. (

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