Document Details

RaLa Production - Calendar Year 1956
Subject Terms:
Los Alamos, uranium; RaLa, ORNL, curies; contamination, radiation
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Science and Technology\Instruments and Equipment; Health, Safety and Environment\Worker Health and Safety; Specific Material\Uranium
Document Type:
Publication Date:
1957 Apr 08
Declassification Date:
1957 Sep 03
Declassification Status:
Document Pages:
Accession Number:
Document Number(s):
Originating Research Org.:
Oak Ridge National Laboratory
OpenNet Entry Date:
1998 Jun 16
This document summarizes the ORNL RaLa production for Calendar Year 1956 (CY-1956). RaLa production at ORNL was concluded at the end of this calendar year. Six batches of RaLa product containing a total of 79,000 curies were shipped to Los Alamos during CY-1956. The average shipment in CY-1956 contained 15,840 curies as compared to 15,100 curies (excluding one special 700-curie run) in CY-1955. Total processing losses increased from 63.0 percent in CY-1955 to 68.4 percent in CY-1956 because of extra uranium loaded into the dissolver for standby in case of an abnormal product loss due to equipment failure. Consistent with past experience, the largest single process loss occurred in the final product evaporation step although the estimated amount was decreased this year from 30 percent to 17 percent. The decrease is attributed to better operating techniques and modifications in the drying procedure, developed after extensive testing with nonradioactive solutions. A table with an analytical summary for the runs made this year is included. The extremely poor condition of the equipment created no operating difficulties; in fact, operations in CY-1956 as well as in CY-1955, were almost completely trouble free. Radiation exposure of operating personnel was also at the lowest level in the ORNL RaLa production experience.

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