Criticality Calculations and Shielding Analysis of the Missouri S&T Research Reactor using Scale-6.2.2


A 3D model of the Missouri S&T Research Reactor (MSTR) was developed using SCALE-6.2.2 in this study. The criticality calculation of MSTR was modeled with the CSAS6/KENO-VI sequence within the SCALE-6.2.2 package. The critical control rods height was predicted, and the criticality was achieved when the control rod withdrawn 22.25 in with the keff value of 1.0001±0.00083. Then, the neutron source distribution of the critical core was used as a mesh source for the shielding analysis. The shielding analysis was performed using a flexible MAVRIC/FW-CADIS model of the MSTR that could perform and analyze deep penetration shielding problems.

Meeting Name

20th Topical Meeting of the Radiation Protection and Shielding Division, RPSD 2018 (2018: Aug. 26-31, Santa Fe, NM)


Nuclear Engineering and Radiation Science

Keywords and Phrases

3D modeling; Control rods; Criticality (nuclear fission); Neutron sources; Research reactors; Shielding, Criticality calculations; Deep penetration; Missouris; Neutron source distribution; Shielding analysis; Shielding problems, Reactor shielding

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


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© 2018 American Nuclear Society (ANS), All rights reserved.

Publication Date

01 Aug 2018

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