Radon Dosimetry Campania

Reduction of exposure to natural radioactivity coming from radon gas in a confined environment. Regional Law no. 13 8 July 2019

By the deadline of 16 October 2019, owners of businesses open to the public must start to measure the level of radon gas concentrations on an annual basis.

Amendments made to the Regional Law no. 13/2019 have not affected Art. 4, Para. 2, which orders the measurements and the suspension of compliance with safety standards for all those who have not fulfilled said instruction by the deadline.


Regional Law no. 13, 8 July 2019

“Legislation regarding the reduction of exposure to natural radioactivity from radon gas in confined indoor spaces”, orders the measuring of radon throughout the region, for all places open to the public and for strategic buildings, including ones used for teaching purposes.

For strategic buildings

pursuant to Min Decree 14.01.2008 and those allocated for the purpose of providing teaching, including nurseries and pre-school, the reference limit for indoor radon gas concentrations and in all rooms in the said building cannot exceed 300 Bq/m3, measured using passive instrumentation.

For basements, lower floors and ground floors

of the buildings as specified above, that are open to the public, excluding residential buildings and isolated technical rooms used for network systems, the upper limit for radon gas concentrations in indoor environments cannot exceed 300/Bq/m3, measured using passive instrumentation.


Are taken using passive instrumentation, i.e. ready-to-use CR-39 nuclear track detectors; the devices must be removed from the shipment pack and positioned at a height of 1 to 3 metres, in an area that is a distance from heat sources and drafts. The measurement will be taken as an average concentration value over an annual period divided into two halves, spring-summer and autumn-winter.

Conclusion of measurement

We will send a communication within one month of concluding the measurement to the town council involved.

If measurements are not sent

within eighteen months of the date on which the Regional Law comes into effect, the town council will order the transmission of the measurements taken, permitting a maximum time of thirty days, which if surpassed without compliance will lead to the suspension of the certification of safety compliance by legal order.