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- Title
APPLICATION OF MCBEND TO PBMR SHIELDING ANALYSIS.
- Authors
Wright, G. A.; Wall, S. J.
- Abstract
Shielding analysis of an early design of Pebble Bed Modular Reactor (PBMR) has been carried out by using the Monte Carlo code MCBEND. The issues of concern were damage to the core barrel and the reactor pressure vessel (RPV), activation of the core barrel, RPV, top plate and bottom plate, and also burn-up of boron in the control layer underneath the core. The analysis below the core was complicated due to the presence of the de-fuelling chute, which meant that multiplication had to be taken into account. The analysis of boron burn-up was particularly challenging and was tackled using a combination of MCBEND and the criticality code MONK in the depletion mode. The application of MCBEND to the shielding analysis of the PBMR is described, with particular attention being paid to the regions below the core.
- Subjects
PEBBLE bed reactors; NUCLEAR reactors; COMPRESSED air; HIGH pressure (Science); PRESSURE vessels; RADIATION shielding; NUCLEAR engineering safety measures
- Publication
Radiation Protection Dosimetry, 2005, Vol 115, Issue 1-4, p73
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/nci261