HKNIC - Environmental Monitoring Programme
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Environmental Monitoring Programme
A complete study was made before the commissioning of Daya Bay to provide a reference for any change in radiation levels in the environment during operation. The study covered three main areas:
Food chain. Investigation of the production and consumption of food within 10 kilometres from the station on land, and within 20 kilometres at sea
Ocean ecology. Study of the hydrology, marine biology and fish farming near the station.
Background radiation. Study of the normal (or ambient) background radiation level of the environment around the station, as well as the natural radiation level of sea water, marine life, sediment, land life, soil, air and water.
Daya Bay has installed a number of environmental monitoring stations in its vicinity:
Five atmospheric monitoring stations, located 1 kilometre from Daya Bay, which sample ambient radiation and meteorological conditions.
Five environmental monitoring stations, built 5 kilometres from Daya Bay, which sample gamma radiation near the ground.
Two vehicles equipped with meteorological and gamma radiation monitoring instruments are also deployed for post-accident assessment. Data from the vehicles can be transmitted remotely to the site laboratory at Daya Bay.
[ Environmental Radiation Monitoring ]


The power station collects more than 1,000 environmental samples each year at specific locations and regular intervals (from daily to yearly), to measure radiation levels and compare these data with the results obtained before station operation.

The results are independently verified by the Ministry of Environmental Protection. So far they indicate that there has been no significant change in radioactivity around Daya Bay.