Evaluation of Emergency Planning Zone for EPR Nuclear Power Unit in TSNPP

The Emergency Planning Zone（EPZ） of EPR unit was evaluated using the MELCORE Accident Consequence Code System 2（MACCS2） developed by Sandia National Laboratory.Hourly meteorological data were collected from Sep 2007 to Aug 2008 by the site meteorological monitoring system.The accident source term including the core inventory and release characteristics were based on EPR PSA Level 2.Based on NUREG-0396 and GB/T 17680.1-2008,this paper put forward the quantitative safety criteria.The effective dose and thyroid dose were calculated.By comparing the result to the protective guide and safety criteria,a radius of 0.5 km was evaluated for EPR unit in TSNPP.We suggested that a radius of 4 km is the reasonable conservative value of interior EPZ for TSNPP and for exterior EPZ the value is 7km.