ML20086R752
| ML20086R752 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 07/25/1995 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20086R734 | List: |
| References | |
| NUDOCS 9507310270 | |
| Download: ML20086R752 (4) | |
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UNITED STATES j
NUCLEAR REGULATORY COMMISSION
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 82 TO FACILITY OPERATING LICENSE NO. NPF-47 fNTERGY OPERATIONS. INC.. ET AL.
RIVER BEND STATION. UNIT 1 DOCKET N0. 50-458
1.0 INTRODUCTION
By letter dated May 13, 1993, as supplemented by letter dated January 31, 1995Property "Letter" (as page type) with input value "RBG-41109, Confirms That Util Complies W/Requirements of Approved Generic Topical Rept TDI-EDG-001-A & Requests That NRC Approve LAR 93-03 Re Removal of Tdi DG License Conditions as Soon as Practical" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., the licensee (Entergy Operations, Inc.), submitted a request for changes to the River Bend Station, Unit 1 (RBS) Facility Operating License No. NPF-47.
The requested change would change Attachment 3 to Facility Operating License No. NPF-47, "TDI (Transamerica Deleval, Inc.) Diesel Engines Requirements", by removing conditions that pertain to engine overhaul frequency, maintenance and surveillance program and inspection of crankshafts, cylinder heads, engine block, and turbochargers.
These licensing conditions were imposed in response to the issues discussed in Supplement 3 to the River Bend Operating License Safety Evaluation Report, NUREG-0989, dated August 1985.
These conditions are being removed from since the concerns have been resolved as stated below and, accordingly, these license conditions are no longer warranted and may be deleted.
By letter dated January 31, 1995Property "Letter" (as page type) with input value "RBG-41109, Confirms That Util Complies W/Requirements of Approved Generic Topical Rept TDI-EDG-001-A & Requests That NRC Approve LAR 93-03 Re Removal of Tdi DG License Conditions as Soon as Practical" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., the licensee incorporated by reference all of the findings and conclusions of the NRC-approved version of the Transamerica Deleval, Inc. Emergency Diesel Generators Owners Group Generic Topical Report TDI-EDG-001-A as submitted on April 28, 1994.
The licensee's letter of January 31, 1995, did not change the scope of the May 13, 1993, application and the initial proposed no significant hazards consideration determination.
2.0 EVALUATION The TDI diesel generators Owners' Group (0wners' Group) submitted proposals on November 30, 1992, and December 7,1993, on behalf of a number of plants with TDI emergency diesel generators (EDGs) including the River Bend plant.
The Owner's Group proposed removal of diesel generator related licensing conditions. These conditions were imposed as part of a technical resolution to address concerns regarding the reliability of the TDI EDGs following the crankshaft failure at Shoreham in August 1983. The technical resolution involved implementation of Phase I and Phase II programs as identified in 9507310270 950725 PDR ADOCK 05000458.
P PDR
. NUREG-1216.
The Phase I program focused on the resolution of known engine component problems that had potential generic implications, while the Phase Il program focused on the design review of a large set of important engine components to ensure their adequacy from a manufacturing standpoint, as well as operational performance. At that time, the staff concluded that these components merited special emphasis in the area of load restrictions and/or maintenance and surveillance. The 16 major components which were identified included connecting rods, crankshafts, cylinder blocks, cylinder heads, piston skirts, and turbochargers.
Engine load restrictions were addressed in the plant specific Technical Specifications, license conditions, engine operating procedures and operator training, as appropriate, for five of these components.
The most critical periodic maintenance / surveillance actions for these components were incorporated as license conditions.
On the basis of substantial operational ; sa and inspection results, the Owners' Group provided information in its submittals of November 1992 and December 1993 to demonstrate that the special concerns of NUREG-1216 were no longer warranted.
The Owners' Group stated that the TDI EDGs should be treated on a par with other EDGs within the nuclear industry and subjected to the same standard regulations, without the special requirements of NUREG-1216.
In addition, the Owners' Group stated that this action will improve availability of the engines for service, especially during outages, whne s
niaintaining current reliability levels.
The NRC staff and its consultants at Pacific Northwest Laboratories have completed a review of the operational data and inspection results contained in the Owners' Group submittals relative to the individual components.
In addition, independent opinions were obtained from three leading diesel engine experts regarding these inspection requirements.
On the basis of the review, the staff conc hded that there is adequate justification for removing the present component-based licensing conditions.
The staff's Safety Evaluation on the Owners' Group submittals is contained in a letter to Mr. R. C Day, TDI Diesel Generators Owners' Group Clearinghouse, dated March 17, 1994,
The NRC staff has reviewed the licensee's submittal of May 31, 1993, as supplemented by letter dated January 31, 1995Property "Letter" (as page type) with input value "RBG-41109, Confirms That Util Complies W/Requirements of Approved Generic Topical Rept TDI-EDG-001-A & Requests That NRC Approve LAR 93-03 Re Removal of Tdi DG License Conditions as Soon as Practical" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., with respect to whether its findings from its review of the Owner's Group submittals are applicable to the River Bend Station. Appendix D of the Safety Evaluation of the Owners' Group submittals identifies the specific components and tests which may be deleted from licensee's license conditions. The River Bend license conditions, Appendix 3, contains those components and tests which may now be deleted and other conditions which may not.
Appendix 3 contains a requirement in Item 1 on 10 CFR 50.59 provisions for changes to the maintenance and surveillance program which is redundant to the approved program at River Bend and may be deleted.
Item 7 regarding operation beyond the first refueling has been fulfilled, is no longer applicable, and may be deleted.
Letter from Mr. James A. Norberg, NRC, to Mr. R. C. Day, Duke Engineering &
Services, Inc., TDI Diesel Generators Owners Group Clearinghouse, dated March 17, 1994.
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. The remaining conditions in Appendix 3 are directly related to the components or tests which may be deleted as a result of the NRC approval of the Owners Group submittals or the conditions will remain in the new Appendix 3.
For those license conditions that are directly related, the staff concludes that the licensee proposal is consistent with the Safety Evaluation issued for the Owner's Group submittals contained in the March 17, 1994, letter to Mr. R. C.
Day and that some conditions in Attachment 3 to Facility Operating License NPF-47 may be deleted.
Specifically, Appendix 3 is revised with the following changes to license conditions.
Item 1 on the frequency of engine overhauls is deleted.
The statement on 10 CFR 50.59 provisions for changes to the maintenance and surveillance program are redundant to the approved program at River Bend and are deleted.
Item 2 on crankshaft inspections is deleted except for the requirement for reporting cracks found during any inspection and the NRC approval of any corrective action on the cracks; these provisions become the new Item 1.
Item 3 on cylinder block inspections and Item 4 on air roll tests are deleted.
Item 5 on requirements for diesels operated in excess of 3130 KW is retained and becomes the new Item 2.
Item 6 on turbochargers is deleted.
Item 7 regarding operation beyond the first refueling has been fulfilled and is deleted.
3.0 STATE CONSULTATION
in accordance with the Commission's regulations, the Louisiana State official was notified of the proposed issuance of the amendment.
The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
The amendment changes a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20.
The NRC staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (58 FR 41505). Accordingly, the amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendment.
5.0 CONCLUSION
The Commission has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such L
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activities will be conducted. in compliance with~ the Commission's regulations, l
and (3) the issuance.of the amendment will not be inimical to the common-a, defense and security or to the health and safety of the public.
j Principal Contributors:
D. Wigginton l
J.,Rajan Date: July 25, 1995 1
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