Space Reactor Radiation Shield Design Summary, for Information Page: 8 of 70
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Enclosure (1) to
SPP-67210-0011
Page 4
List of Figures
Figure 1: Reactor Shield Shadow Cone and Basic Shield Shape...............................................8
Figure 2: Example (120 direction) of Shield Size Projection from the Reactor and Shield
M aterial Lam inations...........................................................................................................9
Figure 3: ORNL (Reference (a)) plots of reactor (Primary) gamma and shield capture
(Secondary) gamma dose contributions through the shield for a LiH based shield.............12
Figure 4: ORNL (Reference (a)) plots of reactor (Primary) gamma and shield capture
(Secondary) gamma dose contributions through the shield for a BeIB4C based shield......13
Figure 5: Examples of various ways to route piping through the shield ....................................18
Figure 6: Pipe penetration gamma streaming for various piping penetration configurations
throug h the shie ld ....................................... .................... .............. .................................19
Figure 7: Pipe penetration neutron streaming for various piping penetration configurations
through the shield .............................................................................................................20
Figure 8: Piping penetration configuration with a 180 degree smooth spiral inside the outer
edge of the shield ...................................................... .... ...............................................2 1
Figure 9: ORNL pipe routings for the hydrogenous shields ...................................................23
Figure 10: Thermal Neutron Fluence in the First 10 cm of Shield Materials Considered for
Around Nuclear Instruments (Reference (g)) ................................................................26
Figure 11: Hydrogenous material canning configurations that avoid single point failure..... 31
Figure 12: Notional Shield Configuration for Improved Manufacturability .................................32
Figure 13: "Horizontal" Reactor/Shield Configuration with reactor axis parallel to the shield face
............................................. ... . . ........................................... .....................................3 3PRE-DECISIONAL - For planning and discussion purposes only
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Pheil, EC. Space Reactor Radiation Shield Design Summary, for Information, report, February 17, 2006; Niskayuna, NY. (https://digital.library.unt.edu/ark:/67531/metadc873954/m1/8/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.