Radiation Damage of SMR Reactor Vessel

Abstract

Radiation damage of reactor pressure vessel in a large reactor units is a key lifetime indicator. Number of newly proposed Small Modular Reactors (SMR) utilize a compact pressure reactor vessel that is a scaled version of larger ones. These types of SMR typically utilize nuclear fuel at a high volumetric power and along with a small reflector, resulting in fundamentally similar reactor vessel lifetime as in the large reactor units. However, there are SMR designs that operates at lower volumetric power. TEPLATOR district heating SMR is a reactor design with low pressure, low temperature and low volumetric power for district heating purposes. In this paper, radiation damage in terms of displacement per atom of TEPLATOR reactor vessel is calculated by MCNP code.