Shielding Analysis of a Small Compact Space Nuclear Reactor

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Abstract:

The SP-100 reactor concept, currently in its developmental stage, has layered tungsten--lithium hydride shield. Studies indicate that this shield configuration is the lightest weight shield. This configuration and three other shielding concepts were analyzed to determine the lightest shield and to determine the shield configuration with the smallest volume. The other three concepts were a boron carbide--beryllium layered shield, and a lithium hydride-- beryllium shield. FEMP2D and FEMP1D codes were used in this analysis. These codes were developed at Sandia National Laboratory SNL, using the input from another code, RFCC, which produced energy dependent dose conversion factors, and determined the shields ability to attenuate the neutron and gamma radiation to permissible dose limits. The results of this analysis show that the lithium hydride--tungsten layered shield was indeed the lightest weight shield. However, a boron carbide--tungsten shield was calcubay volume constraint. Therefore volume, not weight, may be the driving factor in determining the shield configuration.

Author(s):
Woodrow, Lee L., Jr
Author Organization(s):
AIR FORCE WEAPONS LAB KIRTLAND AFB NM
Descriptive Note:
Final rept.
Pagination:
0206

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFWL-TR-87-94
Task Number(s):
23
Project Number(s):
5797
Monitor Series:
AFWL
 Subject Terms
Joint Capability Areas:
JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.3.3_Spectrum Management; JCA_1_Force Support; JCA_4.1_Deployment and Distribution; JCA_6_Net Centric; JCA_1.2_Force Preparation; JCA_6.3_Net Management; JCA_1.2.6_Concepts; JCA_JCA_4.1.2_Sustain the Force; JCA_1.3_Human Capital Management; JCA_1.2.3_Educating; JCA_1.3.2_Personnel Management; JCA_4.6_Engineering; JCA_4.5.4_Requirements Definition
Modernization Areas:
Space; Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*RADIATION SHIELDING, *REACTOR SHIELDING MATERIALS, CONVERSION, VOLUME, MASS, LIMITATIONS, WEIGHT, DOSAGE, GAMMA RAYS, LIGHTWEIGHT, SHIELDING, BORON CARBIDES, BERYLLIUM, NUCLEAR REACTORS, TUNGSTEN, NEUTRONS, RADIATION DOSAGE, SPACEBORNE, REACTOR CRITICALITY, LITHIUM HYDRIDE
Field(s)/Group(s):
Nuclear Radiation Shielding, Protection and Safety
Keyword(s):
SP 100 REACTORS, PE62601F, WUAFWL57972301
Report Date:
1987 Aug 01