ML19260A580
| ML19260A580 | |
| Person / Time | |
|---|---|
| Site: | 07109853 |
| Issue date: | 11/01/1979 |
| From: | Travis W ENERGY, DEPT. OF |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 14587, NUDOCS 7911280259 | |
| Download: ML19260A580 (6) | |
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Department of Energy Oak Ridge Operations P.O. Box E
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Oak Ridge, Tennessee 37830 November 1, 1979 r-
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p U. S. Nuclear Regulatory Comnission O'
ATIN: Charles E. MacDonald, Chief l7, 2
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Transportation Certification Branch Division of Fuel Cycle & Material Safety 5_~,,
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Washington, D. C.
20553 EP as Gentlemen:
Reference is given to your letter dated October 1,1979, to Larry Blalock in regard to the NRC review of the Report ORNL/ENG/TM-15,
" Safety Analysis Report for Packaging: The Unirradiated Fuel Shipping Container," FCTC: RHO, 71-9853.
In reply to the specific additional information which you requested, ORNL has prepared the enclosed supplemental data. The data have been reviewed by the staff of the DOE-ORO Safety and Environmental Control Division and we fully concur with the conclusions.
We request a priority review by NRC so that the containers may x. used at an early date.
Sincerely, I
%%-- 1A Twi.
William H. Travis, Director MS-334:WAP Safety & Environmental Control Division
Enclosure:
Supplemental Data (9 copies) f' cc w/ encl.:
T. H. Hardin, AD-46 D. M. Ross, G-135, HQ-GTN cc w/o encl.:
C. A. Keller, MS-30 1696 A6 2
2.C587 7911280 1
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Comparison of Shicoino Packaces
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Reoort K1714 and ORNL/ENG/TM-15 The following comparison of containers is based on the referenced documents listed at the end of this document.
The shipping containers referred to by
'ORNL/ENG/TM-15 are superior in design to the containers of report K1714 for the following reasons:
1.
The wall thickness is greater for the TM-15 containers 0.125 in, to 0.050 in. (outer container).
2.
The phenolic foam thickness is greater - top 5 3/4 in. to 5 in. -
bottom 51/2 in. to 5 in. - radial see table for comparison.
3.
The closure design inherently superior.
Six 5/8 in. diam stainless bolts secure the TM-15 outer lid to the container flange while the K1714 containers use a 5/8" diam bolt type rina closure.
4.
The materials of TM-15 (300 stainless steel) have better impact ductility at lower temperatures than the carbon steel used in the K1714 containers.
5.
The static loadings of the loaded inner container is less in every case for the TM-15 container (see table).
6.
The static loadings of the loaded container is less in every case for the TM-15 container (see table).
7.
The loadings for the K-1714 containers were based on actual loadings and calculated container weight; however, the TM-15 containers are a calculated weight plus 20% for conservatism.
8.
The outer diameter of the TM-15 cnntainers are larger: therefne. the surface area in a droo test would be greater, thus more energy could be absorbed without container failure.
The K1714 containers were tested as outlined in the reference report and found to be acceptable; therefore, because of the improvements outlined above for the TM-15 containers, we conclude that the TN-15 containers are superior.
References:
Unidii Carbide Nuclear Division Reports
- 1) K-1714, Protective Shipping Packages for 8.- and 12-inch Diameter UF Cylinders, A. J. Mallett and C. E. Newlon 6
- 2) ORNL/ENG/TM-15, Safety Analysis Report for Packaging:
The Unirradiated Fuel Shipping Container, J. H. Evans, W. D. Shipley and R. W. Mouring.
1696 347 scGr
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COMPARISON OF SHIPPING PACKAGES REPORT K1714 ORNL/ENG/TM-15 8 in.
12 in.
ORH UF UFg BSR Contakners Containers PCA HFBR NBSRR Ht. inside (in.)
69 1/4 59 3/4 51 7/8 70 3/4 82 3/8 ID Container 22 1/2 24 24 1/2 24 1/2 25 3/4 (in.)
Outer Container 18 gauge 18 gauge 11 gauge 11 gauge 11 gauge Material
(.050in.)
(.050in.)
(.125 in.)
(.125 in.)
(.125 in.)
carbon steel carbon steel 300 SS 300 SS 300 SS Inner Container 9 1/2 13 3/8 7 ea, 7 ea, 7 ea, OD (in.)
4 in. sq.
4 in. sq.
4 1/2 in, sq.
Inner Container 16 gauge 16 gauge 16 gauge 16 gauge 16 gauge Material
(.062 in.)
(.062in.)
(.062 in.)
(.062 in.)
(.062 in.)
carbon steel carbon steel 300 SS 300 SS 300 SS Lid Foam Ht.
5 5
5 3/4 5 3/4 5 3/4 (in.)
Bottom Foam Ht.
5 5
51/2 5 1/2 5 1/2 (in.)
- Radial Foam Area 327 311 370 370 380 (in.2)
Closure 5/8" diam 5/8" diam 6 ea 5/8" 6 ea 5/8" 6 ea 5/8" bolt type bolt type diam bolts diam bolts diam bolts ring closure ring closure 26" diam 26" diam 27 1/2" diam top of con-16" from top bolt circle bolt circle bolt circle tainer top of cont.
top of cont.
top of cont.
Wt. Container 280 270 440 560 710 (lb)
Wt. Load (lb) 380 640 140 140 140 Wt. Total (lb) 660 91 0 580*
700*
850*
Inner Container 201 254 169 169 210 2
Base Area (.in )
Calculated Wt. Inner 40 72 66 92 119 Container (lbsl 4t. Inner Container 420 712 247*
278*
311*
+ Loading (lbs) inner Container 2.1 2.8 1.5 1.7 1.5 Static Loading (1b/in2)
, C, e'
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g *e Outer Container 431 456 481 481 526 2
Base Area (in )
Static Load Outer 1.7 2.0 1.2 1.5 1.6 2
Container (lb/in )
i 1696 349
Addendum to Comoarison of Shiocing Packaces Report K-1714 and ORNL/ENG/TM-15 The following is the justification for the design of the container closure of the unirradiated container.
The allowable stress of A516 listed in Table UHA-23 (Ref.1) is unchanged from -20*F to 600 F.
The allowable stress for the 300 series stainless steel decreases from 18,800 psi (-20 F to 100*F) to 17,800 psi.at 200 F; therefore the allowable stress could be considered to be assentially constant over the temperature extremes that the container could be subjected.
The decision to use a 300 series stainless bolt was based on its availability and low temperature toughness (Ref. 2).
The nut material was selected to avoid gall.ing problems with the S.St. bolt and its toughness properties at low temperature (Ref. 2 and 3).
In addition this material is weldable to the 300 series stainless steel of the container. The nuts should be attached to the container for ease of installation of the container closure.
In addition this insures that the nuts are not lost and an unsuitable nut (material) substituted.
This container is not sealed; therefore, in a drop condition it is only necessary that the lid remain in place.
The inherent superiority of six 5/8 bolts over a single bolt design appears obvious.
1 1696 550
References 1.
ASME Boiler and Pressure Vessel Code 1977 Section VIII Division 1.
2.
ORNL-NSIC-68 UC-80 Reactor Technology Cask Designer's Guide A Guide for the Design, Fabrication and Operation of Shipping Casks for Nuclear Applications L. B. Shappert 3.
1979 Annual Book of ASTM Standards A516-79 Grade 60 Standard Specification for Moderate and Lower Temperature Service.
I 1696 551
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