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Title: Hot cell shield plug extraction apparatus

An apparatus is provided for moving shielding plugs into and out of holes in concrete shielding walls in hot cells for handling radioactive materials without the use of external moving equipment. The apparatus provides a means whereby a shield plug is extracted from its hole and then swung approximately 90 degrees out of the way so that the hole may be accessed. The apparatus uses hinges to slide the plug in and out and to rotate it out of the way, the hinge apparatus also supporting the weight of the plug in all positions, with the load of the plug being transferred to a vertical wall by means of a bolting arrangement.
 [1];  [2]
  1. (Moore, ID)
  2. (Pingree, ID)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) OSTI
Patent Number(s):
US 5416334
Contract Number:
Research Org:
Country of Publication:
United States
hot; cell; shield; plug; extraction; apparatus; provided; moving; shielding; plugs; holes; concrete; walls; cells; handling; radioactive; materials; external; equipment; provides; means; whereby; extracted; swung; approximately; 90; degrees; accessed; hinges; slide; rotate; hinge; supporting; weight; positions; load; transferred; vertical; wall; bolting; arrangement; means whereby; extraction apparatus; apparatus provides; radioactive material; active material; radioactive materials; hot cell; active materials; shielding wall; shield plug; vertical wall; hot cells; handling radioactive; /250/376/