Biological shielding assessment and dose rate calculation for a neutron inspection portal

► We assess the biological shielding of a inspection portal based on neutron sources. ► Different configurations of the system have been calculated with MCNP code. ► The work has been performed within the European Eritr@C project. ► The compliance with the European dose limits has been verified for each configuration. ► It is provided by shielding of the neutron sources and by delimitation of a controlled area.