ML20211M433
| ML20211M433 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 12/09/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20211M428 | List: |
| References | |
| TAC-61970, NUDOCS 8612170252 | |
| Download: ML20211M433 (4) | |
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l SAFE'TY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 26 TO FACILITY OPERATING LICENSE NO. NPF-29 MISSISSIPPI POWER & LIGHT COMPANY MIDDLE SOUTH ENERGY, INC.
SOUTH MISSISSIP'PI ELECTRIC POWER ASSOCIATION GRAND GULF NUCLEAR STATION, UNIT 1 DOCKET NO. 50-416
1.0 INTRODUCTION
By letter dated September 12, 1986, Mississippi Power.& Light Company (the licensee) requested an amendment to Facility Operating License No. NPF-29 for the Grand Gulf Nuclear Station (GGNS), Unit 1.
The proposed amendment would change Lice'nse Condi' tion 2.C.(25)(b) to incorporate maintenance and surveillance requirements for the Transamerica Delaval, Inc.
(TDI) emergency diesel generators developed by the TDI Owners' Group and endorsed by the licensee. l As discussed in the staff's: Supplement No. 6 to the GGNS Safety Evaluation Report, License Condition 2.C.(25)(b) was imposed to ensure that Grand I
Gulf, Unit 1, will continue to meet General Design Criterion 17, " Electric Power Station Systems," in Appendix A to 10 CFR 50 beyond the first refueling outage. Specific' ally, this license condition requires " Final evaluations and recommendations from the TDI Owners Group Program applicable to GGNS, Unit 1,'and MP&L's actions in response to this program for the standby diesel generators shall be submitted for NRC review and approval prior to startup following the first refuelin'g outage."
By letter dated June 26, 1986, the NRC staff transmitted to the licensee its generic safety evaluation report (SER) entitled, " Safety Evaluation Report Related to the Operability and Reliability of Emergency Diesel Generators Manufactured by Transamerica Delaval, Inc.," NUREG-1216. The staff concluded that the implementation of the maintenance and surveillance program identified in the SER will provide an acceptable resolution of the concerns regarding the. performance of TDI emergency diesel generators for service at nuclear plan.ts. The staff requested MP&L to provide its plans for implementation at GGNS, Unit 1 of the programs identified in the aeneric SER. As describedein the staff's oeneric SER, the TDI Owners Group program for resolutio'n of the concerns consisted of the following major elements:
(1) Phase I: Resolution of 16 known generic problem areas intended by the Owners Group to serve as an interim basis for the licensing of plants; i
8612170252 861209 DR ADOCK 05000416 PDR l
, (2) Phase II: A design review /ouality revalidation'(DR/QR) of a large set of importar.t engine components to assure that their design and manufacture are' adequate; and (3) Expanded engine tests and inspections to support Phase I and II.
The staff has required that any future revisions to the maintenance and
-surveillance program be subject to requirements similar to those for FSAR changes in'10 CFR 50.59 in view of the importance to this program in ensuring the operability and reliability of the engines.
Furtherriore, as described in the staff's generic SER, there are certain components that warrant special emphasis in terms of maintenance and surveillance actions to assure their adequate service. The staff requested FP&L to submit these maintenance and surveillance actions in the form of proposed license con-ditions as recommended by the generic SEP..
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By letter dated July 18, 1986, MPAL provided its plans for implementation "of the programs identified in the staff's generic SER for resolving the TDI reliability concerns. Specifically, MP&L plans to implement Phase I and II as discussed in the generic SER and the maintenance and surveillance i
recommendations developed by the TDI. Owners Group in Appendix II, Revision 2, of the DR/QR report for GGNS. Future TDI' recommendations 4
would be evaluated by MP&L and would be implemented as appropriate.
By letter dated September 12, 1986, the licensee proposed changes to License Condition 2.C.(25)(b) to add maintenance and 'urveillance s
requirements for the TDI diesel generators. During its review of the proposed license condition, the staff questioned the need for certain l
parenthetical expressions intended to clarify the applicability of the requirements to Division II emergency diesel generator inspections. The licensee agreed that the parenthetical expressions we're not necessary and by~ letter dated November 7, 1986 proposed that they be deleted from the license condition. The notice of consideration of is'uance of this s
!r license amendment was published in the Federal Register before the licensee's November 7, 1986 submittal. The deletion of the parenthetical i
expressions did not change the proposed license condition described in i
the notice. Therefore, the notice accurately described the license amendment request and the deletion does not affect the substance of the i
requested amendment, i
-2.0 EVALUATION f
The NRC staff has reviewed the licensee's plans as submitted July 18, 1986.
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.The licensee's plans are consistent with the elements that constitute an acceptable maintenance and surveillance program as outlined in the staff's generic SER and are, therefore, acceptable. As required by GGNS, Unit 1 Technical Specifications, the licensee will continue to operate its TDI diesel generators at less than or equal to 82% of rated load as recommended also in the generic SER. However, testing over 82% of rated load is a TDI requirement for seating new piston rings. The staff finds such post i
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3-I construction testing to be infrequent, of short duration and, therefore, acceptable. Because the licensee has acceptably responded to the recommendations from the TDI Dwners Group, the staff concludes that License Condition 2.C.(25)(b) has been satisfied.
The NRC staff has also reviewed the proposed new license conditions which add requirements for surveillance and maintenance of TDI diesel generators. The proposed license conditions as submitted by the licensee's letters dated September 12 and November 7,1986 are consistent with the model license conditions included as Appendix A to staff's generic SER (NUREG-1216). The licensee has proposed to use the 10 CFR 50.59 process to evaluate changes to the maintenance and surveillance program identified in the license condition with the exception of the specific requirements for Phase I components applicable to the GGNS, Unit 1 TDI diesel engines which are included as specific license conditions.
Because the proposed new license conditions are consistent with Appendix A to NUREG-1216, the staff concludes they are acceptable.
3.0 ENVIRONMENTAL CONSIDERATION
This amendment involves a change to a requirement with respect to the installation or use of a facility co' ponent located within the restricted m
i area as defined in 10 CFR Part 20 and changes to the surveillance
-requirements. The 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 signifi-cant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that this amendment involves no significant hazards consideration and there has been no public comment on such finding. Accordingly, this amendment meets the eligibility criteria for cateaorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to10CFR51.22(b),noenvironmentalimpactstatementorenvironmental assessment need be prepared in connection with the issuance of this amendment.
4.0 CONCLUSION
The Commission made a proposed determination that the amendment involves no significant hazards consideration which was published in the Federal Register (51 FR 36097) on October 8, 1986, and consulted with the state of Mississippi. No public comments were received, and the state of Mississippi did not have any comments.
The staff 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, and a
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(2) such, activities will be conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and the security nor to the health and safety of the public.
Principal Contributors:
A. Notafrancesco, Plant Systems Branch, DBL' L. Kintner, Prcject Directorate flo. 4, DBL Dated: December 9, 19S6 1
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