Document Details


Title:
Slug Handling Information
Author(s):
Subject Terms:
Material Handling; RaLa; Slugs; Storage
Addressee:
Ginkel, W. (Idaho Operations Office, Idaho Falls)
Document Location:
DOE INFORMATION CENTER 1 Science.gov Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email: doeic@oro.doe.gov
Document Categories:
Health, Safety and Environment\Worker Health and Safety
Document Type:
CORRESPONDENCE, LETTERS, MEMOS
Publication Date:
1951 Feb 05
Declassification Date:
1977 Oct 15
Declassification Status:
Declassified
Document Pages:
4
Accession Number:
ORF00521
Document Number(s):
CF-51-2-9
Originating Research Org.:
Oak Ridge National Laboratory
OpenNet Entry Date:
1995 Mar 10
Description/Abstract:
A memo attempts to answer questions submitted on how NP slug containers are handled from cask to storage and from storage to process. A description of the material handling procedures for the casks designed by G.E. to weigh about 8 tons each and to contain 18 irradiated slugs is given. These units are unloaded from trucks by means of a 15-ton crane onto the decontamination bay located on the platform. The depth of the unloading pit is about 28 feet with about 24 feet of water cover. As the cask is lowered ,the cover to the cask is removed. Provisions are made so that when the cask reaches the bottom of the pit it shifts position in a manner to engage the bucket to the monorail transfer hook. The bucket is transferred to the weight scale thence to the storage basin where it remains attached to the hook. On transfer to process, the buckets are transferred to the center compartment of the unloading pit by monorail. Six charges will be loaded on the day shift. The operation for each bucket consists of dumping 18 slugs on the floor of the center compartment. By means of tons, 15 of the 18 slugs will be placed in a vertical position in the charger. Five buckets from storage will provide the 90 slugs for six chargers. At this point an accurate count of slugs is obtained. The chargers are removed successively from the pit and stored on the platform. A Ross carrier is contemplated for the transfer from storage to processing. The thickness of lead shielding in chargers provided is: EBR and NP Material - 10 inches; MTR Assemblies - 12 inches. The correct number of slugs fed to the chute per dissolver batch is counted for in transfer from the storage bucket to the charger. The mechanism of charging consists of mounting the charger properly over the charger chute. Upon opening the slug chute valve and removal of the drrawer, the slugs will drop one by one into the dissolver. In general readiation level data for slugs cannot be determined until accurate information on burnup is known. At present it is assumed that burnup at Hanford will average about 15 percent of the 25 in the slug. No difficulties are anticipated in the decontaminating facilities for casks and buckets. If levels are too high on a portion of the loading dock provided for decontamination of mild hot spots, units can be transferred to the Process Building where convential means can be employed.


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