ML20211B806
| ML20211B806 | |
| Person / Time | |
|---|---|
| Issue date: | 10/14/1986 |
| From: | Roberts J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Rouse L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| REF-PROJ-M-37 NUDOCS 8610210121 | |
| Download: ML20211B806 (4) | |
Text
OCT 141986 Project No. M-37 MEMORANDUM FOR: Leland C. Rouse, Chief Advanced Fuel and Spent Fuel Licensing Branch FROM:
John P. Roberts Advanced Fuel and Spent Fuel Licensing Branch
SUBJECT:
MEETING WITH GENERAL NUCLEAR SYSTEMS, INC. (GNSI)
Date and Time:
October 7, 1986; 9:00 a.m.
Location:
Lawrence Livermore National Laboratory.
Attendees:
See Enclosure.
Purpose:
To discuss the safety review of the CASTOR V/21 borated stainless steel fuel basket design.
Sumary:
GNSI's response to NRC of August 15, 1986, and its submittal of redesigned fuel basket drawings on September 30, 1986, were discussed. Substantial progress has been made by GNSI. GNSI has adequately explained and analyzed the cause of the basket weld cracks observed in the fuel basket used in the Idaho National Engineering Laboratory (INEL) spent fuel handling and storage demonstration. GNSI has redesigned the basket and subjected the redesigned and fabricated basket to thermal cycling tests with no observed weld cracking. A report on this test is in preparation.
Analysis with respect to the effects of dynamic impact on the on the redesigned basket will need to be completed for the borated stainless steel base material and weld area. material when these have been fully characterized.
GNSI has carried out numerous material tests already, and these, with some additional tests, should allow full characterization to _be completed.
In sumary, GNSI has provided responses explaining the cause of weld area cracking due to thermally induced strain in basket weld areas ar.d appears to have redesigned its fuel basket to preclude this problem. GNSI has performed most of the testing needed to allow it to characterize borated stainless steel for use in a fuel basket. Data from GNSI testing needs to be presented in a
. proper format to acceptably complete material characterization. When the material has been characterized, the effects of dynamic impact on the basket 8610210121 861014 PDR PROJ M-37 PDR
OCT 14 ES6 Leland C. Rouse 2
from an accident can be reviewed. GNSI will submit a revised " CASTOR V/21 Borated Stainless Steel Basket Evaluation" report to cover all aspects of the basket analysis, updating its August 15, 1986 submittal for staff review.
Assuming acceptability, this information can then be incorporated in the CASTOR V/21 topical safety analysis report.
ORIGINAf. SIGNED BY; John P. Roberts Advanced Fuel and Spent Fuel Licensing Branch
Enclosure:
Attendance List DISTRIBUTION: Please return original concurrence to FBrown SS 396 (ProjectNo.=M-37:
PDR M NMSS r/f FBrown FCAF r/f GBeveridge/SCornell JRoberts JSchneider FSturz
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NAME:JRo erts/jl.: LCRouse :
10/6// :
DATE:10/47/86 :
'l 0FFICIAL RECORD COPY
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ATTENDEES John P. Roberts NRC/NMSS Monika Witte LLNL Heinz Geiser GNS Dieter Rittscher GNS Jurgen Migenda GNS Paul McConnell GRC J. W. (Bill) Jones GNS/Swanson S.C.
M. I. Baig GNSI Robert T. Anderson GNSI Martin W. Schwartz LLNL l ^
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