ML20215B786
| ML20215B786 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 12/10/1986 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Rubenstein L Office of Nuclear Reactor Regulation |
| References | |
| 86-497B, NUDOCS 8612120315 | |
| Download: ML20215B786 (3) | |
Text
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VIuGINIA ELucTule ann Pownu COMPANY R scunonn,VnuannxA 2332GI December 10, 1986 W,L.MTEWANT Vace Pasenosur Ne rLaam Ormaations Mr. Harold R.
Denton, Director Serial No. 86-497B Office of Nuclear Reactor Regulation NO/JDH Attn: Mr. Lester S.
Rubenstein, Director Docket Nos. 50-338 PWR Project Directorate No. 2 50-339 Division of PWR Licensing-A License Nos. NPF-4 U.S. Nuclear Regulatory Commission NPF-7 Washington, D.C.
20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 ADDITIONAL INFORMATION REGARDING FORTY YEAR OPERATING LICENSES On December 5, 1986 (Serial No. 86-497A) we provided additional information regarding 40 year operating licenses for North Anna 1 and 2 which supplemented our. original August 22, 1986 (Serial No.86-497) request.
We subsequently noted one error in our December 5, 1986 submittal.
On Page 8, Item 2, we discuss the total fissile uranium consumed for the current and extended license periods.
During our calculations, we inadvertently omitted the pounds to kilograms conversion factor.
With the correct conversion factor applied during the calculations, the total fissile uranium consumption over the extended license period is still bounded by the total four unit uranium consumption values previously accepted by NRC in the FES.
A revised Page 8 with Item 2 corrected is attached.
We regret any inconvenience caused by this error.
Very truly yours, l
5&
1 L.
Stewart Attachment 8612120315 861210 PDR ADOCK 05000338 P
PDR g
l (h0 h
cc:
Dr.
J. Nelson Grace Regional Administrator NRC Region II Mr. Leon B.
Engle NRC North Anna Project Manager PWR Project Directorate No. 2 Division of PWR Licensing-A Mr.
J.
L.
Caldwell NRC Senior Resident Inspector North Anna Power Station Mr. Charles Price Department of Health 109 Governor Street Richmond, Virginia 23219 i
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8 ENVIRONMENTAL IMPACT (Fuel Cycle)
The impact of the uranium fuel cycle was considered in the Final Environmental Statement for Units 1,2,3 and 4 (April 1973), Addendum 1 to the FES (November 1976), and Addendum 2 to the FES (August 1980).
North Anna was originally fueled with 3.2% enrichment with a limit-ing reload enrichment of 3.5%.
Since that time, two license amend-ments (Amendment Nos. 27/8 on April 29, 1981 and Amendnent Nos.
36/16 on January 19, 1982) allowed an increase in enrichment for new and spent fuel from 3.5% to the limiting enrichments currently specified in Technical Specification 5.3.1 of 4.1% thus allowing longer operating cycles in lieu of the 12 month cycles assumed in the FES.
In each case, the environmental considerations were assessed and the NRC staff concluded that the amendments would not result in any significant impact.
In assessing the impact on the uranium fuel cycle for the additional 7 years operation for Unit 1 and 9 1/2 years operation for. Unit 2 (approximately 16 1/2 reactor-years additional operation), we have considered the following factors:
1.
The additional years of reactor operation would almost propor-tionally increase the total fissile uranium required.
This impcct is justified in light of the continued benefit received from station operation.
2.
The units are expected to consume 25.1 tons of fissile uranium for Unit 1 and 24.0 tons of fissile uranium for Unit 2 over the current licensed periods.
This is expected to increase to 30.9 tons for Unit 1 and 31.6 tons for Unit 2 consumed over the extended 40 year period.
Therefore, a two unit total of 49.1 tons for the current licensed period and 62.5 tons for the extended period are expected to be consumed.
These values were calculated based on the actual uranium loadings for past and current cycles and projected loadings for future cycles, and were converted to the amount of uranium loaded which is actual-ly consumed.
The North Anna FES gave a value of 71 tons for the expected fissile uranium to be consumed during the lifetime of the four originally planned North Anna reactors.
The total predicted value for Units 1 and 2 over the extended license periods is still bounded by the four unit total uranium consumption value accepted by the NRC in the FES.
Based on our review of the previous NRC findings regarding two license amendments supporting increases in enrichments, the lack of adverse impact on the fuel cycle due to increased enrichments, and the previous FES assessment for 4 units, we have determined that the FES values for consumed fissile uranium remain bounding for the additional operating period.
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