The C-10 Radiological Monitoring Network (CRMN) program was developed in 1991 when Seabrook Station first became operational. In the absence of government oversight, citizens formed to become public watchdogs, confronting the issues of the health effects of ionizing radiation.
Normal operations at a pressurized water reactor such as Seabrook Station result in routine releases of large numbers of radioisotopes into the environment. Seabrook Station’s only monitoring of these releases, which might yield data on the magnitude and type of isotopes released, is done at the stack vent or within the plant’s various ventilation, waste, and steam-handling systems.
Offsite minute to minute monitoring is done by C-10 because Seabrook Station does not have continuous, real-time monitoring of plant emissions at the plant perimeter or anywhere in the populated area around Seabrook Station