ML20133K524
| ML20133K524 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 02/04/1958 |
| From: | Leaders W MALLINCKRODT, INC. |
| To: | Johnson L US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20133G976 | List:
|
| References | |
| FOIA-96-343 NUDOCS 9701210255 | |
| Download: ML20133K524 (2) | |
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MALLINCKRODT CHEMICAL WOR S
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M A NU F ACT U RE RS O F j
FINE CHEMICALS FOR MEDICINAL, PHOTOGRAPHIC
,,CA8 A,DORE,5,SES ANALYTICAL AND INDUSTRIAL PURPOSES Des ^eago aewroaa
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14 February 1958 8.,
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/g Mr. Ipall Johnson 7
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I.icensing Division l
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StrafFCT: Special Nuclear Materials License No. Sh33 1
Dear Mr. Johnsons 5
j In the course of our businssa of preparing uranium ce.iimm,is, it has become essential that we establish facilities for purification and recovery of our 4
i own internal waste residues. ~ We an, therefore, proposing the construction of two facilities for solvent extaction to be used on internauy genessted a
scrap and recovery material such as floor sweepings, dust conector residuos, etc., and unirradiated scrup product from external sources. One facility 1
i will be used te materials of assays from 5% upward to highly enriched. The other facility wiu be used for up to 5% enrichment. We facilities and the l
operating ya ocedures to be utilised are described belawr i
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5% and Higher Enrichment i
Se process to be used win be as fallauss (a) dissolve tho'sarap material i
j in nitric acid, (b) extaset the U ialues with TSP-korosene salution (c) re-l extract the U values from the TIP-koresens scutions with unter, (d) pre-j nipitate U mluss as ADU with ammonia,. (e) filter and introdeos the.
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precipitate into ois regular productica line.
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ne egaipment which win be used for high assey. materials win be stainless steel beaksra, and aman tanks, batch operated, for dissolution in e4trie
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Two extreettun devices win be utMined depending upon the saw and bateh sine. Se first win be a small batch operatodimizing, tank.where a 4
single hatch of U feed and the proper TW.karosens solution win be mixed.
In an cases this equipannt wiu have a maximum diameter of 58.;>1he uranium
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solutions win conhin no pero than 300, g/1, total U ocatant.
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Se other equipment, which win be used for larger batches, at iceer asamys, will consist af counter-current ficu coltums for extraction and for reex-traction. These columns win how a maximme diameter.mt-k'. i the material i
win be fed to the columi either by gravity fles.or with(the usef of susu pegs. An equipment, eclumns, ptspe, tanks, etc. 'amoeseary for the opera-tica of this recovery unit win be housed in an apsa oII'$ ate fums, hood. We I
9701210255 970114 i
FLOYD96-343 PDR
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Mr. Iy2n Johnson Page Two v
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hood win be so designed that av spins will be retained in the hood up to a depth of 1".
Appropriate slots win be placed in the hood to insure this j
maxisua depth. Operating procedures win be rigidly enfarced to insure that no more than one " limited safe" batch quantity of eterial win be in the extraction hood at any one time. These procedures vin _ include pm-
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. analysis of an scrap solutions and solids to determine their U content ani j
weighing or measuring the proper quantity to' make a " limited safe" batch, i
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- For Enrichments up to 5%
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.bFor this area of the plant a Jarge fume hood will' beferected.in which win ibe ' housed an of the extraction equipment. Se equipment w'in consist of i
extraction columns of a maximum of 6" in diameter for the tonowing opera-tions:
(a) extraction of U values into TIP-kerosene solution, (b) reex-l traction from TBP-karosene into water, and (c) continuous treatment of a
solvent, Also in this area win be feed preparation tanks, pumps, and product tanks of appropriate size. Fonowing purification, the material win be precipitated from the final solution with anamnia or peroxide (Ha0a) and filtered. The filter cake win then be introduced into the appropriate step of our agular production line. The extraction columns win be spaced j
to amintain approxiste3y 2 ft. between edges to prevent interaction from a j
neutron standpoint. He tankage, however, is not amenable to such spacing; therefore, the operating procedure will osu for not more than one " limited i
safe" batch of the particular assay material involvedLto be in the hood at av given time.. A second batch of feed will not be made yp without specific authorisation of the supervisor in charge'to insure;against. the possibility i
of double batching. Se charge weight win be controlled by' analysis of i
feed material prior to digestion and weighing the 'apsjate' quantity into
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.the digestion tank.
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1 An solvents win be handled accarding sto ~epproved.safetyLprovisions: and,the lighting fixtures, motors, and other, electrical'equipme'nt. win,be; chosen in accordance with the atandard practice!for hand 14atTBP-keroseas!salutions.
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~ ' ' An exhaust fan on the hood discharging.toithe[a*=a=:has win']revent the; l
. spread of: solvent fumes to other amasiefHtheiplant.U;2effloorfafsthe hood i
isjdesigned to be able to retain 1-1/2 tank'valunsinf thnjlargest@essel.
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,Mme depth of the. liquid in the floor will3eilimiteititoi Mpiropriate
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- We 'aro7quite anxious.to-be ableTo.offsr earaparecovery sto s
ynalame industry and, thereforei: urge (promptioensidention af;this
. for'uodification.of our License No.iSNM-33;tolincludoitheektwo roo! application l
overy areas.
g;this7satt@do "Ifive'enn:be 'af'further assistanos :idjaxpeditig%
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s Signed beforeme' this 6th day of s
February, 1958.>
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Technical Director' h
Special MetalsiDivisionF 7
i Battaine 8. Power l
WML:dj Notary Public
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Commie'eion expires May 4,1959 i
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