Document Details

Health Physics Progress Report, January 1, 1951 - June 30, 1951
Subject Terms:
Iso-Kinetic Sampler, mercury; beryllium, contaminants; cyclotron, Po-Be, radiation; health physics, uranium; monitoring, surveys; progress report, sampling; urinalysis, plutonium
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:
Health, Safety and Environment\Worker Health and Safety; Specific Material\Uranium
Document Type:
Publication Date:
1951 Dec 15
Declassification Status:
Document Pages:
Accession Number:
Document Number(s):
Y-836, TID-1155; Y-836; Y836
Originating Research Org.:
Oak Ridge Y-12 Plant
OpenNet Entry Date:
1998 Jun 16
This document contains the Health Physics Progress Report for January 1, 1951 to June 30, 1951. An "On-The-Job" training program for health physics personnel was inaugurated within this report period. As a result of expanded uranium operations during the report period, the Health Physics Department had to hire additional inspectors, increase the number of permanent air samplers, and collect and process more urine samples than before. A Po-be neutron source container ruptured and spilled contents in a large tank in the Reactor Room of Building 9213. Included were a description of the source, the accident, and immediate consequences. Conclusions were there is no known satisfactory way of decontaminating metals without removing surface layers; clean-up would have been more effective by immediate immobilization of the gross contamination in the steel tank before cleaning up what had spread to other parts of building; and as a preventive measure, it was suggested all source capsules be enclosed in a suitable metal container which can be sealed. Increased cyclotron innage has resulted in greatly increased residual target activity which eliminates the possibility of removing a target without becoming over-exposed. A remotely controlled target dolly was constructed and used to transfer a target from the cyclotron to a lead carrying box from a safe distance. A system of medical control has been inaugurated in which every person who works at the cyclotron will have periodic eye examinations. An area map designed to show the location of buildings and/or areas known or assumed to be potential health hazards was issued, and disaster kits were consolidated to provide one master kit to be kept at the main offices of the Health Physics Department and a smaller unit kept at the Critical Experiments Laboratory, Building 9213. Results of continuous water sampling at the outlet end of the Y-12 storm sewer indicated no significant changes in the level of activity during the period. A total of 836 shipments were inspected for radiation and contamination, and 131 shipments (15.7 percent) were contaminated. The construction of analytical facilities for handling of beryllium compounds has been recently resumed because they are now urgently needed. Air analyses for beryllium, totaled 845 for the second quarter. The averages reported for each area, excluding operational and breathing zone samples, were considerably lower for the first quarter of 1951 than similar averages for the fourth quarter of 1950 due to the reduced amounts of beryllium handled. Air analyses taken for mercury revealed twenty positive results, and findings indicated excessive surface contamination and poor housekeeping. The general level of mercury vapor contamination was well within the MPL for the operations investigated. A program is underway to evaluate filter papers used for field sampling of particulate contamination. The Plutonium Laboratory, which is under construction, requires extensive ventilation facilities and the Iso-Kinetic Sampler is to be installed in the ventilation piping. Tables and figures are included in this report.

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