The annual sampling and measuring programme of the RAMDAN laboratories for a regular, routine, radiological monitoring of the environment is prepared by the NRIRR and is handed in to the chief medical officer for assent.
The detailed sampling and measuring programmes of the RAMDAN laboratories can be found on the following links:
In addition to the main programme of RAMDAN, the NRIRR performs the following special environmental radiation monitoring subprogrammes within institutional sphere of action.
In the Danube subprogramme the NRIRR monitors the whole Hungarian section of the Danube on a monthly basis. The sampling locations are: Gönyű, North-Pest, South-Pest, Paks, Mohács, and samples are taken from the Szelidi lake, too.
On the samples gross beta activity, 40K and 3H concentration measurements are taken monthly, and 90Sr activity concentration and gamma-spectrometric measurements are performed quarterly.
Number of samples is appr. 80, number of measurements is appr. 300 per year.
The Mochovce Nuclear Power Plant lies about 40 km from the Slovak-Hungarian border, to the northwest of Levice. In order to monitor the effects of its operation, samples (tap water, river water, sediment, soil, grass, fallout, vegetables and fruits) are taken and in-situ gamma spectrometric and dose rate measurements are done in the vicinity of 14 Hungarian towns and villages along the border (Komárom, Esztergom, Balassagyarmat, Dobogókő, Királyrét, Vámosmikola, Romhány, Salgótarján, Vác, Letkés, Bernecebaráti, Nagybörzsöny, Ipolytölgyes, Ipolyvece).
For the water samples gross beta activity concentration, 40K and 3H concentration measurements are performed, for the other samples gross beta activity concentration and gamma spectrometric measurements are carried out.
Number of samples is appr. 100, number of measurements is appr. 170 per year.
The NRIRR maintains a TLD network consisting of 115 measuring locations all over the country to monitor the ambient gamma dose rate with thermoluminescent detectors. Volunteers from the public contribute to the operation of this network, to whom the NRIRR sends TL detectors quarterly. The volunteers place the detectors in their garden and they post the previously sent detectors back to the NRIRR. Thus, the NRIRR gets an image of the ambient dose rates all over the country in every quarter of a year.
In order to monitor the ambient gamma dose rate around the Paks Nuclear Power Plant, the NRIRR maintains a separate TLD network, consisting of 40 measuring locations within a radius of 30 km around the power plant. The thermoluminescent detectors (TLDs) are exchanged quarterly, thus the NRIRR gets an image of the ambient dose rate around the Paks NPP in every quarter of a year.
The NRIRR started a national survey of 222Rn concentration in Hungarian dwellings in order to prepare the Hungarian radon map. 280 dwellings of 248 settlements were examined so far. It is obvious that the survey is far from being complete, as it needs improvement from several points of view, but to a first approximation we can say that about one tenth of the Hungarian dwellings, meeting the requirements of the survey (groundfloor, without cellar, average usage, brick or concrete walls), is expected to show levels of radon higher than 200 Bq/m3, which is the action level recommended for future constructions by the Commission of European Communities (90/143/Euratom).
The NRIRR monitors the vicinity of the site of the Public Limited Company for Radioactive Waste Managament at Püspökszilágy in every half year. It measures the gross beta activity and 3H concentration of surface waters, the gross beta activity of the soil and it performs a gamma spectrometric analysis of soil and sediment samples.
The NRIRR performs a regular environmental monitoring on its own site, too. It measures the ambient dose rate three times a day (working day), the gross beta activity of aerosol daily, the gross beta activity of fallout monthly and it performs in-situ gamma spectrometric measurements in every half year.