ML20042F942
| ML20042F942 | |
| Person / Time | |
|---|---|
| Issue date: | 05/04/1990 |
| From: | Jackie Cook NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Chou C LAWRENCE LIVERMORE NATIONAL LABORATORY |
| References | |
| NUDOCS 9005100203 | |
| Download: ML20042F942 (2) | |
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4 lu,Y 0 4 1990 L
Dr.' C. K. Chou A-Acting Program Leader Nuclear Systems Safety Program Lawrence Livermore National Laboratory P.O. Box 808 i
Livermore, CA 94555
Dear Dr. Chou:
Based on the progress review on April 12, 1990, I request you to complete the development of the controlled test criteria with consideration of the 4
following guidelines:
1.
Establish the criteria independent of the requirements of NUREG-0360.
The crittria should be presented as a distinct set of test requirements in a format similar to the Draft Criteria for Package Drop and Aircraft Crash Tests". The controlled test criteria should be a collection of objective performance measures, independent of package design, applicable to any applicant.
2-Specify that the controlled tests are in lieu of the aircraft crash test. Note that the free drop test is required.
3.
Specify a set of distinct controlled tests which simulate the conditions exceeding those in the PSA 1771 accident. Specifically:
3.1 Impact test with 925 ft/sec velocity into a surface with hardness of 532.5 3.2 Provide an option for the applicant to substitute the above impact test with another onto an unyielding surface with S7.0 in order to 0
be able to have more controlled conditions for conducting the test.
The applicant could in this case provide a supporting analysis for a reduced impact velocity to a value which assures equivalent kinetic energy conditions to those for Test 3.1 above. Make it explicit that this is the only case where the applicant may request changes in the test criteria based on the characteristics of the specific package designs.
3.3 Specify how the effects of multiple impacts created by several packages located behind each other should be accounted for in Tests 3.1 and 3.2.
3.4 Specify test conditions in Tests 3.1 and 3.2 to account for the major aircraft components, if any, that may impact the packages.
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3.5 Specify the fire test based on the worst case accident.
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3.6 Specify other. tests to simulate conditions that exceed those that were identified from your compilation of comercial aircraft accidents. These tests should include consideration for puncture, tear, crush, burial, immersion and possibly others that you may find in your analysis. The criteria for these tests should be specified by-probability analysis utilizing your accident data base.
4.
Specify that separate packages may be used for each of the above tests (Tests 3.1 through 3.6) if the probability analysis indicates that the conditions have a low probability of occurring simultaneously.
5.
Do not include a discussion of PAT.1 or of any previously certified pac uges in the test criteria document.
6.
Include a probability section on severe accidents.
If you have any questions or wish to discuss the guidelines in further detail, please call me.
Sincerely,
/el John R. Cook, Section Leader Transportation Projects Section Transportation Branch Division of Safeguards and Transportation, HMSS I
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DATE: b/4/90-0FFICIAL RECORD COPY LRT TO DR. C. K. CHOU j