Reactivity-equivalent Physical Transformation [Slides]
Abstract not provided.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
Engineering topics
Hoffman, Keenan Jeffrey
Publications and source records attributed to Hoffman, Keenan Jeffrey.
Assessing Several Modeling Approaches in Depletion Studies of a TRISO-Fueled Microreactor
The impact of MCNP6 depletion resolution on core lifetime is examined in the context of the Snowflake microreactor with explicit TRISO fuel. The change in core lifetime and isotope mass as a result of different tracked isotopes, timesteps, and spatial regions is discussed. Calculation speed of a prototype MCNP delta tracking module is compared to a reactivity equivalent physical transformation (RPT). Using a single depletion material underpredicts core lifetime by 15%, and the resolution necessary to converge isotope mass greatly depends on the specific isotope, in addition to the size (and location) of the depletion region. The prototype delta tracking module decreases the CPU time of explicit TRISO criticality calculations by 30%, but does not always result in a speedup when used with depletion. Significant depletion speedup is obtained using RPT (50% faster), and all isotope masses agreed within three percent.
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗
Assessing Several Modeling Approaches in Depletion Studies of a TRISO-Fueled Microreactor [Slides]
Abstract not provided.
22 GENERAL STUDIES OF NUCLEAR REACTORS↗