ML20059L316
| ML20059L316 | |
| Person / Time | |
|---|---|
| Issue date: | 01/14/1994 |
| From: | Haughney C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Shelor D ENERGY, DEPT. OF |
| References | |
| NUDOCS 9402030364 | |
| Download: ML20059L316 (5) | |
Text
n Mr. Dwight E. Shelor, Associate Director for Systems and Compliance Office of Civilian Radioactive Waste Management U.S. Department of Energy RW-30 1000 Independence Avenue, SW Washington, D.C.
20585
Dear Mr. Shelor:
SUBJECT:
MINUTES-FROM THE NOVEMBER 30 - DECEMBER 1, 1993, BURNUP CREDIT TECHNICAL EXCHANGE I am enclosing the minutes from the November 30 - December 1, 1993, technical exchange on burnup credit. The purpose of the exchange was to discuss the technical issues associated with relying on burnup credit in the criticality analysis for spent fuel casks and, in particular, the multi-purpose canister (MPC).
At the close of the exchange, both NRC and DOE agreed to meet for future technical exchanges on the burnup credit issues.
NRC agreed to contact DOE to schedule the next technical exchange to provide NRC's comments and observations on the information presented and to ask further questions. This technical exchange has been coordinated with your staff for February 10,' 1994.
If you have any questions on the minutes, please contact Meg Lusardi of my staff at (301)504-2704.
Sincerely, OspdSignedBy:
ChadesJ.lkghney Charles J. Haughney, Chief Storage and Transport Systems Branch Division of Industrial and Medical Nuclear Safety, NMSS gey;
Enclosure:
As stated cc: Attached List
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p 1 1 IL R. Loux, State of Nevada T. J. Hickey, Nevada Legislative Committee J. Meder, Nevada Legislative Counsel Bureau R. Nelson, YMP0 M. Murphy, Nye County, NV M. Baughman, Lincoln County, NV D. Bechtel, Clark County, NV D. Weigel, GA0 P. Niedzielski-Eichner, Nye County, NV B. Mettam, Inyo County, CA V. Poe, Mineral County, NV F. Mariani, White Pine County, NV R. Willir.is, Lander County, NV L. Fiorenzi, Eureka County, NV J.11offman, Esmeralda County, NV C. Schank, Churchill County, NV L. Bradshaw, Nye County, NV I i ( /
4 g e Minutes from the November 30 - December 1, 1993 Technical Exchange on Burnup Credit On' November 30 and December 1,1993, staff from the Nuclear Regulatory Commission and the Office of Civilian Radioactive Waste Management (0CRWM), Department of Energy (DOE), met to discuss the technical issues associated .with relying.on burnup credit in the criticality analysis for spent fuel casks and containers. DOE stated that it considers burnup credit one of the most i significant technical issues for the proposed multi-purpose canister (MPC) system, and it is ready to begin a process of technical exchanges with NRC staff to resolve burnup credit issues. NRC stated that it is open to the possibility of relying on burnup credit in criticality analyses. NRC added that it viewed this technical exchange as a pre-application meeting, and an. opportunity to learn any new information that has been developed concerning burnup credit. The State of Nevada stated that when evaluating the MPC, the system should be reviewed for storage and transport exclusive of disposal. The State's view was that not enough is known about the repository at this time, and repository decisions must be stand alone safety decisions. is a list of attendees. After a brief introduction and a brief discussion of DOE's issue resolution methods for the repository, DOE presented an overview of the conceptual design of the MPC and the major issues involved with its development. DOE stated that burnup credit is necessary for the MPC to provide more capacity, thereby minimizing handling of the MPC and reducing the number of shipments required, and to demonstrate long-term criticality control for disposal. An l introduction of the burnup credit concept for storage, transport and disposal was then presented, followed by an overview of the issues associated with each mode. A Sandia National Laboratory (SNL) representative then discussed the distribution of the burned fuel along the fuel rod assembTy.f the axial research that has been done to determine the effect on k o A database containing fuel burnup data provided by utilities is being developed to verify the method of calculating the axial burnup profile. A representative from Oak Ridge National Laboratories then presented the results of research that has been done to benchmark the methods for calculating the quantity of fission products produced during burnup, and to assess the effect of these fission products on k,,,. This was followed by a discussion of benchmarking of the criticality computer codes for use in analyses.where burnup credit is taken. The final presentation, provided by another representative from SNL, concerned the use of the FORK System for measuring the burnup of the fuel and verifying consistency with reactor records. Copies of slides from all of the presentations are provided as Attachment 2. DOE stated that it is currently planning to prepare up to three topical reports concerning burnup credit. The first one is currently being developed aid discusses burnup credit for PWR fuel for storage and transportation, with expected delivery by the end of FY 94. The second will discuss burnup credit for both PWR and BWR fuel for disposal, and will be presented approximately one year later. Finally, there are tentative plans to prepare a third report that will discuss burnup credit for BWR fuel-in storage and transportation. NRC indicated that topical reports generally have not been an optimal mechanism for communicating technical issues in storage and transportation. Enclosure
g {p: 'I Both DOE and NRC agreed that additional technical' exchanges' to discuss the burnup credit issues in more detail 'are needed. NRC stated that after having' ~ the opportunity' to absorb and review the material-presented during this technical exchange, it will contact DOE to schedule the next meeting to provide NRC's comments and observations and ask further questions. -lll2, cfy 344 Cass R. Chappell, Section Leader Cask: Certification Section Storage and Transport Systems Branch Division of Industrial-and Medical Nuclear Safety, NMSS U.S. Nuclear Regulatory Commission h 0 7Y Priscilla Bunton Regulatory Integration Branch Office of Systems and Compliance i '-Office of Civilian Radioactive Waste Management-U.S. Department of Energy i-
(. w 't O JOINT NRC/ DOE MPC AND BURNUP CREDIT TECHNICAL EXCHANGE #1 November 30 - December 1, 19P3 List of Attendees 110_E HRG BUNTON, PRISCILLA 202-586-8365 BAILEY, MARISSA-STSB 301-504-2181 CARLSON, JIM 202-586-9694 BALLARD, RON-#LWN 301-504-3462 DESELL, LINDA 202-586-1462 CARLSON, B0B-NLWN 301-r04-2435 G0MBERG, STEVEN 202-586-6497 CHAPPELL, ROSS-STSB 301-504-2457 LAKE, BILL 202-586-2840 HAUGHNEY, CHARLEY-STSB 301-504-3595 OTT, ELLEN W. 202-586-2936 LUSARDI, HEG-STSB 301-504-2704 RUSS0 MANNO, CHARLES 202-586-4347 PAPERIELLO, CARL-l#NS 301-504-2659 SMITH, MACKAYE 702-794-1933 SCHNEIDER, JIM-SCDB 301-504-2692 STURZ, FRITZ-STSB 301-504-2684 WELLER, RICK-#LWN 301-504-3458 WHITE, BERNIE-STSB 301-504-2455 WITHEE, CARL-STSB 301-504-2358 STATE OF NEVADA ENERGY RESOURCES INTERNATIONAL. INC. FRISHMAN, STEVE 702-687-3744 MARSICO, PETER J. 202-785-8833 LAWRENCE LIVERMORE NATIONAL LAB NUS CARLSON, ROGER 510-422-1084 LIAW, JEAN 258-2476 BALTIMORE GAS & ELECTRIC OAK RIDGE NATIONAL LAB LIPPOLD, JIM 410-260-4109 PARKS, CECIL 615-574-5280 SANDIA N&TIONAL LAB WESTON BRADY, MICHAELE 505-845-9099 CHARLES, CHRISTOPHER 202-646-6754 EWING, RONALD I. 505-845-9546 D0 VARA, SAMI 202-646-6679
- MAR 0TTA, CHARLES 301-340-0025 DRESSER, DAN 202-646-6781 cconsua awr To sAworn MOBASHERAN, AMIR 202-646-6649 MQ CNWRA BWFC -
SWRI - THOMAS, DANIEL 702-794-1984 NAIR, PRASAD 210-522-5150 RUSSELL, JOHN L. 703-979-9129 DUKE ENGINEERING - MORGAN, ROBERT 703-204-8863 NWTRB .i BELLA, CARL D. 703-235-4473 DE&S - THORNTON, JIH 704-382-3029 ACNW GNUGNOLI, GIORGIO 301-492-9851 E.R. JOHNSON - NOLAN, DONALD J. 703-204-8935 RAHIMI, MERAJ 703-204-8928 TEER, BILL R. 703-204-8929 OWFC - 00ERING, T. W. 702-794-1857 TRW - GODMAN, RAY 703-204-8603 KUBO, ART 703-204-8680 Attachment I}}