Nuclear criticality safety assessment of the proposed CFC replacement coolants [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 29 pages : digital, PDF file
- Additional Creators
- Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The neutron multiplication characteristics of refrigerant-114 (R-114) and proposed replacement coolants perfluorobutane (C₄F₁₀) and cycloperfluorobutane C₄F₈) have been compared by evaluating the infinite media multiplication factors of UF₆/H/coolant systems and by replacement calculations considering a 10-MW freezer/sublimer. The results of these comparisons demonstrate that R-114 is a neutron absorber, due to its chlorine content, and that the alternative fluorocarbon coolants are neutron moderators. Estimates of critical spherical geometries considering mixtures of UF₆/HF/C₄F₁₀ indicate that the flourocarbon-moderated systems are large compared with water-moderated systems. The freezer/sublimer calculations indicate that the alternative coolants are more reactive than R-114, but that the reactivity remains significantly below the condition of water in the tubes, which was a limiting condition. Based on these results, the alternative coolants appear to be acceptable; however, several follow-up tasks have been recommended, and additional evaluation will be required on an individual equipment basis.
- Report Numbers
- E 1.99:ornl/tm--12475
ornl/tm--12475 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
12/01/1993.
"ornl/tm--12475"
"DE94006502"
Jordan, W.C.; Dyer, H.R. - Type of Report and Period Covered Note
- Topical; 12/01/1993 - 12/01/1993
- Funding Information
- AC05-84OR21400
View MARC record | catkey: 14114176