Introduction of the environmental sampling network for the safeguards in KINAC

The Environmental sampling (ES) program is known as the one of the most powerful verificationtechnique for the detection of undeclared nuclearactivities. It has grown to be a main investigative tool in the last 15 years since it was approved as a safeguards verification measures. The application of ES usually involves two stages ; (i) baseline sampling and (ii) routine sampling (i) Baseline sampling is performed to establish a reference 'environmental signature' (ii) Routine sampling is subsequently performed to obtain data that can be compared for consistency with the established baseline environmental signature and the declared operations. The KINAC has established the ES program to build 'the baseline of environmental signature' for domestic nuclear facility with the KBSI (Korea) and ITU (Germany).