ML20129B543
| ML20129B543 | |
| Person / Time | |
|---|---|
| Site: | 07100510 |
| Issue date: | 06/19/1985 |
| From: | Barnhart V CHEM-NUCLEAR SYSTEMS, INC. |
| To: | Roberts J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20129B546 | List: |
| References | |
| REF-PROJ-M-37 25397, C8506-15, NUDOCS 8507150536 | |
| Download: ML20129B543 (3) | |
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C8506-15 Mr. John P. Roberts, Project Manager
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Subject:
NRC Project M-37 E'
CASTOR V/21 Topical Safety Analysis Report
Enclosure:
Design Analysis for CASTOR V/21 Impact Limiter Gentlemen:
This transmittal provides you with our final design and analysis for the impact limiter applicable to the CASTOR V/21 cask. The attached metal impact ifmiter design supercedes the description of the wooden impact limiter as described in Section 8. 2.1. 2. 3. 2 of the TSAR Revision 1.
The existing analysis in the TSAR for the top and bottom end drops demonstrate acceptable results based on a peak acceleration of 50 G's with the wooden impact limiter. The attached analysis of the metal impact limiter also restricts the maximum cask acceleration to less than 50 G's (32.4 G's maximum calculated based on 6 foot drop).
Therefore, the cask body stresses previously determined remain valid and bounding for the enclosed design.
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Operationally, the impact limiters (top and bottom) provide protection during the transfer of the cask onto the ISFSI storage pad. The cask is hoisted over it's final position and lowered to a height that permits easy removal at the bottom limiter. Section 8. 2.1. 2. 3. 5 of the TSAR shows that a cask height of 15 inches.during this operation is acceptable. Since the enclosed limiter design is approximately 10 inches high, the 15 inch height limitation can be easily maintained while the bottom limiter is removed. Once the cask is properly positioned on the pad, the top impact limiter is removed.
Information contained within this transmittal will be incorporated in the CASTOR V/21 TSAR.
Please feel free to contact me at 203-677-0457 with any further comments or questions.
Very truly yours, General Nuclear Systems, Inc.
vsG Victor J. Barnhart Vice President & Project fianager CC:
H. S. McKay (VEPCO)
M. Schwartz (LLNL)
/1d 0296C Enclosures