Radiation monitoring at Sizewell B PWR

Radiation-monitoring at the Sizewell B nuclear power station most significantly differs from that in existing UK power stations in two respects: firstly in the large number of online radiation monitors and secondly in the way that the monitors are linked into a fully-integrated, centralised data acquisition and display system, which can be accessed and viewed by the operators. NEI Control Systems has considerable expertise in the field of radiation monitoring systems, and has been involved as a major supplier to nuclear power stations both in the UK and abroad over the past 20 years. As part of the Sizewell B process plant C&I contract awarded to NEI by Nuclear Electric, NEI is to supply the health physics instrumentation (HPI) and process and effluent activity monitoring system (PEAMS) (excluding the primary protection system) plus the nuclear sampling system (NSS). The author concentrates on the HPI, and parts of the PEAMS and NSS for which NEI have the responsibility for system design, detail design, manufacture, site installation and commissioning