ML20205F240

Forwards SER Re Operability/Reliability of Tdi Emergency Diesel Generators.Owners Group Program Plan to Resolve Known Generic Problems & Review Design & QA Discussed.Util Response Requested within 30 Days of Receipt of Ltr

ML20205F240
Person / Time
Site:	Vogtle
Issue date:	08/08/1986
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Conway R GEORGIA POWER CO.
Shared Package
ML20205F247	List: ML20205F240 ML20205F273
References
NUDOCS 8608190131
Download: ML20205F240 (4)

Text

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Docket Nos.: 50-424 and 50-425 Mr. Richard Conway, Vice President and Project General Manager Georgia Power Company Route 2, Box 299A Waynesboro, Georgia 30830

Subject:

Safety Evaluation Report of the Operability / Reliability of Emergency Diesel Generators Manufactured by Transamerica Delaval, Inc.

As you are well aware, concerns regarding the reliability of large bore, medium speed diesel generators (DGs) manufactured by Transamerica Delaval, Inc. (TDI) for application at domestic nuclear plants were first prompted by a crankshaft failure at Shoreham in August 1983. A broad pattern of deficiencies in critical engine components subsequently occurred at Shoreham and other nuclear and non-nuclear facilities employing TDI diesel generators. These deficiencies stemed from inadequacies in design, manufacture and quality assurance / quality control (QA/QC)byTDI.

In response to these problems,11 (now 13) U. S. nuclear utility owners formed a TDI Diesel Generator Owners Group to address operational and regulatory issues relative to diesel generator sets used for standby emergency power. On

. March 2,1984, the Owners Group submitted a proposed program to the NRC which, through a combination of design reviews, quality revalidations, engine tests and component inspections, was intended to provide an in-depth assessment of the adequacy of the respective utility's TDI engines to perfonn their safety related function.

The Owners Group Program Plan involved the following major elements:

(1) Phase I: Resolution of known generic problem areas intended by the Owners Group to serve as a basis for the licensing of plants during the period prior to completion of Phase II of the Owners Group Program.

(2) Phase II: A design review / quality revalidation (DR/QR) of a large set of important engine components to assure that their design and manu-facture, including specifications, quality control and quality assurance, and operational surveillance and maintenance, are adequate.

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' ~ Mr.' Richard Conway (3) Expanded engine tests and inspections as needed to support Phases I and II.

The staff has previously concluded that the Owners Group Program Plan incorpo-rates the essential elements needed to resolve the outstanding concerns relating to the reliability of the TDI DGs for nuclear service (

Reference:

U.S. NRC a Safety Evaluation Report, Transamerica Delaval, Inc., Emergency Diesel Generator Owners Group Program Plan, Washington, D.C., August 13,1984).

The Safety Evaluation Report (SER) contained in Enclosure 1 provides the staff's evaluation of the Owners Group findings and reconnendations stemming from the program. Subject to the findings of this SER, the staff has concluded that a technical resolution of the generic TDI emergency diesel generator issue is available. Techical resolution will involve implementation of an acceptable Phase I program as identified in Section 2.1 of this SER, an acceptable Phase II program as identified in Section 2.2 of this SER, and implementation of an acceptable maintenance and surveillance program as identified in Section 2.3 of this SER. These actions are supplemental to requirements which must normally I

be satisfied (e.g., Regulatory Guide 1.108) as a prerequisite for obtaining an operating license (

Reference:

NUREG-0800, " Standard Review Plan").

Generic Phase I issues, problem areas of a plant-specific nature, and mainte-nance and surveillance programs must be fully addressed as a condition for issuance of an operating license. Where other issues remain to be closed out (e.g., Phase II issues) in accordance with this SER, a license condition will be imposed requiring such closeout by the first refueling outage if it can be demonstrated that these issues cannot be resolved prior to Vogtle Unit 1 fuel load.

With regard to Phase I components, the staff has concluded that several of these components merit special emphasis in the areas of load restrictions and/or maintenance / surveillance. These components include the DSRV connecting rods,

. cylinder blocks, cylinder heads, and turbochargers. Engine load restrictions must be addressed in the plant Technical Specifications, license conditions, engine operating procedures and operator training, as appropriate. The most

. critical periodic maintenance / surveillance actions for these components will be ,

incorporated as license conditions.

Please review the enclosed SER for further amplification on these topics. For those sections of the SER which are applicable to Vogtle (sections connon to all TDI DGs and sections specific to the TDI DSRV 16-4 DG), describe how Georgia Power Company has met or will meet all the staff recommendations specified in the SER and justfy all deviations from the staff reconnendations and/or the Owners Group Program.

Additionally, Enclosure 2 requests Georgia Power Company to address two topics of Board Notifications (refer to BN 86-08) and several recent licensee event re-ports (LERs) concerning TDI diesels. Enclosure 3 contains copies of the letters referenced in Enclosure 2. We request that you respond to the SER and LER I

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Mr. Richard Conway G 0 8 Jggs issues within thirty days of the date of this letter in order to resolve this issue prior to Unit 1 fuel load. The TDI issue has been identified as confirm-atory item 36 in the Vogtle SER.

Contact the Project Manager, Melanie Miller, if there are any questions regarding this request.

Sincerely,

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B. J. Youngblood, Director PWR Project Directorate #4 Division of PWR Licensing-A

Enclosures:

As stated cc: See next page DISTRIBUTION:

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Mr.' Richard Conway issues within thirty days of the date of this letter in order to resolve this issce prior to Unit 1 fuel load. The TDI issue has been identified as confinn-atory item 36 in the Vogtle SER.

Contact the Project Manager, Melanie Miller, if there are any questions regarding this request.

Sincerely,

/

B. J. You ood, Director PWR Project Directorate #4 Division of PWR Licensing-A

Enclosures:

As stated cc: See next page

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Mr. R'. E..Conway Georgia Power Company Vogtle Electric Generating Plant cc: ,

Resident Inspector Mr. L. T. Gucwa -

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Nuclear Regulatory Connission ChiefNuclearEnfineer P. O. Box 572 Georgia Power Cnmpany P.O. Box 4545 - Waynesboro, Georgia 30830 Atlanta, Georgia 30302 Mr. Ruble'A. Thomas Deppish Kirkland, III, Counsel Vice President - Licensing Office of the Consumers' Utility Vogtle Project Council Georgia Power Company / Suite 225

, Southern Company Services, Inc. 32 Peachtree Street, N.W.

Atlanta, Georgia 30303 P.O. Box 2625

.Dirmingham, Alabama 35202 James E. Joiner Troutman, Sanders, Lockerman, k!r. Donald 0. Foster Vice President & Project General Manager & Ashmore Georgia Power Company Candler Building Post Office Box 299A, Route 2 127 Peachtree Street, N.E.

Waynesboro, Georgia 30830 Atlanta, Georgia 30303 Douglas C. Teper Mr. J. A. Bailey Georgians Against Nuclear Energy Project Licensing Manager 1253 Lenox Circle Southern Company Services, Inc. Atlanta, Georgia 30306 P.O. Box 2625 Birmingham, Alabama 35202 i

Ernest L. Blake, Jr.

Bruce W. Churchill, Esq.

Shaw, Pittman, Potts and Trowbridge Tim Johnson

- 1800 M Street, N.W. Executive Director l Educational Campaign for Washington, D. C. 20036 a Prosperous Georgia Mr. G. Bockhold, Jr. 1083 Austin Avenue, N.E.

Atlanta, Georgia 30307 Vogtle Plant Manager Georgia Power Company Route 2, Box 299-A Billie Pirner Garde Waynesboro, Georgia 30830 Citizens Clinic Director Government Accountability Project Regional Administrator, Region II 303 10th Street U.S. Nuclear Regulatory Commission Augusta, Georgia 30901 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 A

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