This work has been carried out within the framework of the IRIS (International Reactor Innovative and Secure) project. IRIS is a relatively small advanced Light Water Reactor (LWR), being developed through a strong international partnership far a near term deployment (within the nextm decade), to offer a simple nuclear plant with outstanding safety,attractive economics and enhanced proliferation resistance characteristics. It provides a viable bridge to Generation IV reactors and has excellent capability to satisfy in the near/mid-term timeframe the Global Nuclear Energy Partnership (GNEP) requirements far small-scale reactors. The present document has been presented at the IRIS 19th Team Meeting in Atlanta, GA, USA, in May 7-9, 2008. It summarizes the Shielding activity carried out during the test six months by means of the TORT Three-dimensional discrete ordinates neutron/photon) ver. 3.2 deterministic code. The main objective of the analysis is the fast neutron fluence above 1 MeV at the Vessel, that should be below 1017 [n cm-2] aver the lifetime of 60 years. The preliminary results indicate that this constraint Is satisfied (al so without Bottom Shield) and are in good agreement with the MCNP (Monte Carlo Neutron Particle transport code) ones obtained by K. W. Burn.
|Titolo:||IRIS Preliminary Shielding Analysis of the Vessel by Deterministic Methods|
|Data di pubblicazione:||15-mag-2007|
|Appare nelle tipologie:||5.2 Documento in Garanzia della Qualità|