ML15261A138

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Discusses 970505 Telcon Re Actions That Will Be Taken as Result of Unisolable Unit 2 RCS Leak Identified on 970422, Emanating from Cracked Weld in Transition Piece Between HPI Line & 2A1 Reactor Coolant Loop
ML15261A138
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 05/05/1997
From: Reyes L
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To: Hampton J
DUKE POWER CO.
References
CAL-2-97-03, CAL-2-97-3, NUDOCS 9705130245
Download: ML15261A138 (5)


Text

May 5, 1997 CAL NO. 2-97-003 Duke Power Company ATTN: Mr. J. W. Hampton Vice President Oconee Site P. 0. Box 1439 Seneca, SC 29679

SUBJECT:

CONFIRMATION OF ACTION LETTER - OCONEE UNITS 1, 2, AND 3 Gentlemen:

This letter refers to the telephone conference between Mr. J. Johnson and yourself on May 5, 1997, concerning actions you will take as a result of the unisolable Unit 2 reactor coolant system leak identified on April 22, 1997, emanating from a cracked weld in the transition piece between the High Pressure Injection (HPI) line and the 2A1 reactor coolant loop. Unit 2 is in cold shutdown undergoing failure investigation/repairs; Unit 3 has also recently been shut down due to the potential for a HPI line failure similar to that experienced in Unit 2; and a Justification of Continued Operation (JCO) for Unit 1 has been submitted for NRC review. We understand that Duke Power Company is actively investigating the root cause of the Unit 2 HPI weld failure and evaluating the actions.that have been or will be taken in response.

It is also our understanding that you have or will take the following actions:

(1) Determine the cause of the Unit 2 cracked HPI weld, including the failure of your programs (e.g., Generic Letter 85-20 and Bulletin 88-08 augmented inspection) to preclude such an event.

Evaluate the findings and implement appropriate corrective actions to prevent recurrence including a response to the NRC questions made available to you on May 2, 1997.

(2) Determine the cause of the Unit 3 HPI system degradation which delayed entry into cold shutdown on May 3, 1997. Evaluate the findings and implement appropriate corrective actions. Verify Unit 1 letdown storage tank level instrument accuracy weekly, until root cause and. corrective actions are implemented.

(3) Implement as a compensatory measure, the enhanced leakage detection and make up flow guidelines for Unit 1 set forth in your letter of May 3, 1997.

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(4) Meet with the NRC to discuss the results of (1) and (2)

above, including any impact on the continued safe operation of Unit 1.

Obtain concurrence from the Regional Administrator prior to.reactor criticality for Units 2 or 3.

Pursuant to Section 182, of the Atomic Energy Act, 42 U.S.C. 2232, you are required to:

Notify me immediately if your understanding differs from that set forth above.

Notify me if for any reason you cannot complete the actions within the specified schedule and advise me in writing of your modified schedule in advance of the change.

Notify me in writing when you have completed the actions addressed in the Confirmation of Action Letter.

Issuance of this Confirmation of Action Letter does not preclude issuance of an order formalizing the above commitments or requiring other actions on your part; nor does it preclude the NRC from taking enforcement action for violations of NRC requirements that may have prompted the issuance of this letter. In addition, failure to take the actions addressed in this Confirmation of Action Letter may result in enforcement action.

The responses directed by this letter are not subject to the clearance procedures of the Office of Management and Budget as required by the Paperwork Reduction Act of 1980, Pub. L. No.96-511.

Sincerely, Original signed by:

Luis A. Reyes Regional Administrator Docket Nos. 50-269, 50-270, 50-287 License Nos. DPR-38, DPR-47, DPR-55 cc:

Mr. J. E. Burchfield Compliance Duke Power Company P. 0. Box 1439 Seneca, SC 29679 Mr. Paul R. Newton.

Legal Department (PBO5E)

Duke Power Company 422 South Church Street Charlotte, NC 28242-0001 cc cont'd:

(See Page 3)

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cc cont'd:

Mr. Robert P. Gruber Executive Director Public Staff - NCUC P. 0. Box 29520 Raleigh, NC 27626-0520 Mr. Robert B. Borsum Framatome Technologies 1700 Rockville Pike, Suite 525 Rockville, MD 20852 Mr. J. Michael McGarry, III, Esq.

Winston and Strawn 1400 L Street, NW Washington, D. C. 20005 Dayne H. Brown, Director Division of Radiation Protection N. C. Department of Environmental Health & Natural Resources P. 0. Box 27687 Raleigh, NC 27611-7687 Mr. Max Batavia, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201 County Supervisor of Oconee County Walhalla, SC 29621 Manager, LIS NUS Corporation 2650 McCormick Drive Clearwater, FL 34619-1035 Mr. G. A. Copp Licensing - EC050 Duke Power Company P. 0. Box 1007 Charlotte, NC 28201-1007 Ms. Karen E. Long Assistant Attorney General N. C. Department of Justice P. 0. Box 629 Raleigh, NC 27602 Distribution:

(See page 4)

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Distribution:

H. Thompson, DEDO E. Jordan, DEDO J. Lieberman, OE S. Collins, NRR S. Varga, NRR D. LaBarge, NRR B. Uryc, RII C. Evans, RII G. Tracy, OEDO R. Carroll, RII H. Berkow, NRR C. Casto, RII J. Johnson, RII J. Jaudon, RII PUBLIC NRC Resident Inspector U.S. Nuclear Regulatory Commission 78128 Rochester Highway Seneca, SC 29672 OFFICE RI1DRP RII DRS RI1DRP RII RS NRRHO SIGNATURE NAME CCasl JJaudon JJo 6ns n BMallett RZimmerman DATE 05 /

/97 05 97 05 /

/97 05/

/97 05I/

/97 05/

/97 COPY? I D

NO S

NO NO YES NO NO YES NO

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Distribution:

H. Thompson, DEDR E. Jordan, DEDO J. Lieberman, OE S. Collins, NRR S. Varga, NRR D. LaBarge, NRR B. Uryc, RII C. Evans, RII G. Tracy, OEDO R. Carroll, RII H. Berkow, NRR C. Casto, RII J. Johnson, RII J. Jaudon, RII PUBLIC NRC Resident Inspector U.S. Nuclear Regulatory Commission 78128 Rochester Highway Seneca, SC 29672

  • SEE PREVIOUS CONCURRENCES -

ATTACHED OFFICE

  • RII:DRP
  • RII:DRS
  • RIH:DRS
  • NRR:HQ SIGNATURE NAME CCasto JJaudon JJohnson BMallett RZimmerman DATE 05/

/97 05/

/97 05/

/97 05/

/97 05/

/97 05/

/97 COPY?

YES NO YES NO YES NO YES NO YES NO YES NO OFFICIAL RECURD COPY DOCUMENI NAME:

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