HAZARDS SUMMARY REPORT FOR THE BATTELLE PLASTIC REACTOR FACILITY

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Description

Experiments using a plastic-moderated assembly as a radiation source are described, and the hazards attendant to these experiments are evaluated. The critical assembly, designated Battelle's Plastic Reactor Facility, is constructed in the form of a cube. A portion of the plastic and fuel will be removed from the center of this reactor to provide a radiation environment for exposing fission-chamber devices. This central void region will approximate a flux trap in which a bigh neutron-to-gamma ratio is expected. The fuel-element assemblies are composed of strips of aluminum and Teflon-coated uranium sandwiched with plastic and encased in aluminum boxes. One portion ... continued below

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Pages: 64

Creation Information

Dingee, D.A. & Chastain, J.W. Jr. January 20, 1961.

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Description

Experiments using a plastic-moderated assembly as a radiation source are described, and the hazards attendant to these experiments are evaluated. The critical assembly, designated Battelle's Plastic Reactor Facility, is constructed in the form of a cube. A portion of the plastic and fuel will be removed from the center of this reactor to provide a radiation environment for exposing fission-chamber devices. This central void region will approximate a flux trap in which a bigh neutron-to-gamma ratio is expected. The fuel-element assemblies are composed of strips of aluminum and Teflon-coated uranium sandwiched with plastic and encased in aluminum boxes. One portion of the core is on a movable table, while the other part is on a fixed table. The core is assembled remotely by driving the movable table against the fixed table. Primary control and safety of the assembly are achieved by insenting or withdrawing regulating and safety elements and by increasing or decreasing the distance between the two core halves. For safety, the maximum normal rate of reactivity addition has been limited to 0.04% DELTA k/k per sec for control-element withdrawal and table closure. The system is interlocked so that only one control element can be withdrawn at a time and so that the movable table and elements cannot be moved simultaneously. In addition, criticality cannot be reached by only moving the tables together. No experiments with the Plastic Reactor Facility are planned since it will serve only as a source of radiation operating at a constant power level. Consequently, the hazards of a nuclear excursion are minimized. However, the safety aspects of the operations and possible power excursions have been analyzed. The analysis indicates that these operations present no significant hazard to the public persons or operating staff. (auth)

Physical Description

Pages: 64

Source

  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • Report No.: BMI-ACRS-659
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4080086
  • Archival Resource Key: ark:/67531/metadc868297

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 20, 1961

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 28, 2016, 7:43 p.m.

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Dingee, D.A. & Chastain, J.W. Jr. HAZARDS SUMMARY REPORT FOR THE BATTELLE PLASTIC REACTOR FACILITY, report, January 20, 1961; Columbus, Ohio. (digital.library.unt.edu/ark:/67531/metadc868297/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.