ML19294A495
| ML19294A495 | |
| Person / Time | |
|---|---|
| Site: | 07109130 |
| Issue date: | 11/17/1978 |
| From: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Simchuk J NUCLEAR PACKAGING, INC. |
| References | |
| NUDOCS 7811280099 | |
| Download: ML19294A495 (3) | |
Text
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NUCLEAR REGULATORY COMMisslON 5.g% l}ff W ASHINGTON, D.
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NOV 171978 FCTR: RHO 71-9130 C Nuclear Packaging, Inc.
ATTN: Mr. John D. Simchuk 1733 South Fawcett Tacoma, WN 98402 Gentlemen:
This refers to your application dated August 11, 1978, requesting approval to deliver the Model No. NP-50-XXL packaging to a carrier fer transport.
In connection with our review, we need the information identified in the enclosure to this letter.
Please advise tis within thirty (30) days from the date of this letter when this information will be provided. The additional information requested by this letter should be submitted in the form of revised pages to the original Safety Analysis Report in order to preserve the continuity of your application.
If you have any questions regarding this matter, we will be pleased to meet with you and your staff.
Sincerely, h
Charles E. flacDonald, Chief Transportation Branch Division of Fuel Cycle and Material Safety
Enclosure:
As stated
'n S81128
N Nuclear Packaging, Inc.
Model No. NP-50-XXL Docket No. 71-9130 Enc 1 to ltr dtd:
1.
For the packaging lifting and tie-down conditions, show that the outer shell yield stresses are not exceeded. Also show that the packagings meet the requirements of 10 CFR S 71.31(c)(4) and 571.31(d)(3).
2.
Revise the analysis of the tie-down lugs to include the vertical load component and to use the lug plate thickness shown on the drawing (the drawing shows a 1" plate, the analysis, Page 1-12, shows a 2" plate).
3.
Show that the ratchet binders could sustain the lid end impact forces that would be imposed prior to the lid seating on the gasket spacer for the option-2 configuration.
4.
Show that the primary lid gasket, used in option-2 configuration, and the secondary lid gasket would remain effective if compressed due to a lid end or corner impact.
(Primary lid gasket:
1/2" to 1/8"; secondary lid gasket:
? to 1/8".)
5.
The Model NP-50-2.5L packaging should be free dropped 3' if the weight does not exceed 20,000 lbs.
6.
Revise the corner free drop analysis to inc ode the following:
a.
An explanation as to the applicability of the truncated cylinder equation used on Page 1-21 and reference and symbol definitions; b.
The correct cylinder radii; c.
Justification for the calculation of the impact acceleration as being twice the drop height-deformation ratio, Page 1-22, rather than an acceleration based on the maximum applied force; d.
Justification for the lid binders being loaded equally when the dynamic impact force is applied at the edge; e.
An evaluation of the packaging lid-end closure ring welds for the applied impact force;
8 f.
A demonstration that the flodel NP-50-1.5L lid plate can sustain the maximum binder load; and g.
An evaluation of the lateral load transfer between the lid.s and the cask body.
7.
Show that free drops on the packaging sides would not result in loss of packaging effectiveness.
8.
Revise the drawings submitted to show the following:
a.
The drain port discussed in 50.2.1.7; b.
The external dimensions of the octagonal lid; c.
Specific identification of the ratchet binder; d.
The secondary lid gasket size; and e.
The secondary lid stud thread engagement and clarification of the drawing note.
f.
Materials of construction of all lid gaskets.
Drawing shows neoprene seals and the SAR refers to silicone gaskets.
.-