ML20133K586
| ML20133K586 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 02/20/1958 |
| From: | Leaders W MALLINCKRODT, INC. |
| To: | Johnson L US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20133G976 | List:
|
| References | |
| FOIA-96-343 NUDOCS 9701210275 | |
| Download: ML20133K586 (2) | |
Text
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MALLINCKRODT CHEMICAL WORKS M ANUF ACTURERS OF l
FINE CHEMICALS FOR MEDICINAL. PHOTOGRAPHIC
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ANALYTICAL AND INDUSTRIAL PURPOSES D E ** **'g g* vo a a A S & F.FtM EO thtp li uc,o-..., tovi se n, env. o.a.m
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i Lisenslag Division
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Mr. Icell Jchasen
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U, 8. Atomio Energy Commission f
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SUBJECT:
Special liuolear Materiale License No. 8804-3 3 8p a
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Dear Mr. Jahnsca i
This comunication is a request for modification of our Special Nuclear Materia 3s i
License No, sitM-33 with naard to the section et the p3 ant'14aanaad to Maila up to 5% enriahad urunium dioxide. In our original appliantion, dated 25 May 1956, we described in some detail the entire procedure which we proposed to use. One of the steps was the grinding at ansanium dimenste (ADU) dried enho prior to its l
further treatment and decomposition, The only difficulty eneoantered in the equip-ment used for this grinding operation was to estamo difficulty in ocotrolling airbeams dust.
In order to eliminate this potential hasand,.it was decided to redesign the grinding mechanism and place it at the end of our production opera-tian, The new equipsont essentia137 ocabiase an unloading station for the fernmoe i
bases used for the decomposition of ADU, a grinding station, and a packaging l
station. The fternace bemos ocataining the finished prodnet, 00s, are.mochanios137 positioned at the back at the unlanding hood,".the firent of Aiah.is equipped with l
l special air piM devioso ao that the openstar is ocup3sta3y protested'at all j
times from airborne dust. The operster withdutup trays f>an the ftsrance box, x
p3acas them an a h,ydstalio elevator whieb lifts them into position,te. slide into a
==ah=aia=1 inverter. The ponder flalls into the hopper tdiish feedsDe grinder.
l The prodest from the grinder falls dimet3r into a dust sealed shipplag santainer.
The entire inverting, grinding, and paenaging opeastiamo ano maatamad in a sing 3m l
dust box with spoeial control of pressues to minimise the dest generated and to eliminate cantamination o. the bez enclos. tee te as. guest an extent ~as possible.
1he discharge air tras the dust bas pasace threaft 'am1Wd: type" filter berces it is disdarsed to the atmosphere. 'there is,no..ehenge-in. the,aparating.teshaique et the rest at the p2 ant which isoladu asserete:eentret'er bateh sise;te the alisated
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tafe" amoent, depending spam assey.
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Sinos the equigssent bolag regensted approved unddsist1Amenos has'eheen by test operation to give a imot improvement la ser duet outral asaseres, esul innenosh as i
we deoize to nuevo the older ognipment as quisk3y as:pensible from the building, it is requested that this application be given your famediate attentien l
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9701210275 9701^14' Qi'M'g\\'
FLOYD96-343 PDR
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e ~ Mr. Igall Jettnron Page Two 20 February 1958 If there are further questions which need clsrification, we request that you contact us either by tolophono or wire.
Sincerely yours, NALLINCERODT C Ji1 CAL WGKS
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W. M. Imadare l
Technical Director Special Metals Division WML:dj City of St, Louis) 33 State af Missouri)
Subscribed and sworn to beforo ze this c#peb. day of 1958 Ilotary Public e
f4 Commission Expires Dec. 7,1960 i
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