ML20133H342
| ML20133H342 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 03/03/1960 |
| From: | Swallow L MALLINCKRODT, INC. |
| To: | Delaney J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20133G976 | List:
|
| References | |
| FOIA-96-343 NUDOCS 9701170143 | |
| Download: ML20133H342 (5) | |
Text
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i AIR MAIL F
M ALLIN CK RODT NUCLEAR SAINT LO UIS 7, MISSOU RI
- U.S.A.
. CENTR AL 1-8980 CORPOR ATION I'LA" IIEMATITE, MISSOURI March 3, 1960 s$ \\G1lty'h'b g9 e#h 0
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j Mr. J. C. Delaney
-i Licensing Branch Og g$g fF,g#
g JS Division of Licensing & Regulation 4
944 N
U. S. Atomic Energy Commission y'/'41 \\ @ \\@
s Washington 25, D. C.
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SUB JECT:
Extension of Special Nuclear Materiale License No. 33 to Include $$-Gallon " Shorty" 5-Gallon Pail Shipping Container
Dear Mr. Deleney:
Please reconsider our request for a license for the subject shipping container disregarding previous correspondence on this subject.
ments We plan to use this container fg gnass controlle d ship %.
of uranium compounds having a If a enrichment up to 10 A maximum single layer shipment of 24 drums would be made jf ff//
j by air, LTL, LCL, or railway express.
g M,G/ e The container is showngthe enc 1 ed Mallinckrodt drawing numbered 3369-3 and 3369 The uranium compound 4
is packaged in the inner 5-gallon' type 37A pail.
This 4
pail is centered inside a standard $$-gallon " shorty" drum by means of angle iron stools as shown on the. drawings.
A steel hoop or skirt has been added to the $$-gallon drum i
increasing its diameter to 27 inches.
The lid of each drum is gasketed to prevent water inleakage and has a clamping ring holding the lid firmly in place.
In addition, the words Do Not Stack" will be stenciled on the outside of the $5-gallon. drum.and a pyramid frame has been added to the drum lid as shown on the enclosed sketch. titled "$$ Gallon Drum Lid Addition".
The inter-action solid angle c5L1culations stre based on' a full 5-gallon pail.
The inner dimensions of this pail are 11-1/4 inches inside diameter by 12-1/2 inches high.
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l 9701170143 970114
' ' AN D LEADING PRODUoER O F,N U o LE AR. F UELS FL YD 43 PDR b
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Mr. J. O. Delaney March 3, 1960 PaGe Two--
The method of calculation follows page 21 of K-1309,
" General Application of a Theory of Neutron Interaction" dated 11/13'56.
A single layer hexagonal array of 24 drums
/
is shown on the attached sketch titled "$$-Gallon Shorty
$-Gallon Pail Maximum Shipment".
The total fractional solid angle subtended by the most central drum in a 24 drum shipment is 0.17 With a "bwin" shipment, in an adjacent vehicle, the total fractional solid angle subtended by the most central drum is 0.207 which is high since no allowance for normal spacing between a truck or car was included.
A K f actor of.63 is applicable for mass controlled shipments (Section 3 3, paragraph 2a, page 22, TID-7019) and, therefore, a maximum fractional solid angle of.20 is permitted (Appendix $, page 75, TID-7019).
An example of the solid angle calculation follows:
d =
Average fractional solid angle f=
Edge to odge separation diameter Height Diameter For the first neighbor:
[=
14 f
1.11 - This is constant for all neighbors
[=
.021 - From Figure 2, page 21, K-1309 The maximum inside width of a box car is 98-.2"; the maximam inside width of a truck is 78-8".
Therefore,.the array shown on the enclosed sketch.is.the most compact single layer array that can exist on a car or truck.
The quantity of material shipped in each container.will be a limited safe mass as listed in Tgle II, page 13 of TID-7019, " Guide to Shipment of F.JP Enriched Uranitsa Materials'.
For enrichmente up to an including 5%, the ackaged in the 5= gallon pail.
For 7 5 3
material vill.be p% to 10%, the material will be packaged enriebments from 5 in a polyethylene bottle or metal can having a volume more equal to the material volume.
This bottle or can would 4
then.be packed is the 5-sallon pail with vermiculite.1 In o + :n ym this case there till'be additional safety sinee*theisolide. = W M y % u;m.xangle has been'omloulated on tha';basisref?a fu111p5 4 a11onJpaily g ~
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IIr. J. O. Delaney March 3, 1960 Page Three--
In the case of materic1 having en enrichment of 5ff, the material will probebly occupy less than half the volume of the 5-gellon pail.
Protection against exceeding a limited safe batch is afforded by the last step of our production.
This is a blending operation which is used to obtain product uniformity.
Hermally a limited safe mass is used Ten such batches are blended together as a production batch.
to make a lot.
The blending procedure consists of distributing each batch equally between ten drums.
Only one batch is sub-divided at a time.
The net weight of material before blending is compared to the net weight of material af ter blending to make sure all.the material is accounted for.
In addition, the net weight of material in each drum of the blended lot is compared to the not weight of all other drums in the lot.
This serves to exposo any drums having more j
than the specified quantity, in which case the excess amount is removed and placed in a light drum.
the It should be noted that the possibility of exceedin6 limited safe mass in any drum by more than 2Q$ is very small.
The operation is performed by hand using a scoop which t holds only a few pounds.
Since the material from one drum is divided between ten drums, the operator would have to consistently place extra material in the some drum throughout the entire blending operation.
To supplement the above safety conciderations, we will also obtain certification from the carrier that he will not place our shipment cn the same vehicle with another nuclear shipment and also that he will not store our shipment alongside another nuclear shipment at points of transfer enroute.
Please let us know if you require additional information in order to issue the requested license.
Respectfully yours, MALLINCKRODT NUCLEAR CORPORATION
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L. J. Swall'ow Hematito Plant LJ5/jrt y
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