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RAWRA disposes documentation, approved by the State Office for Nuclear Safety, which includes monitoring programmes, i.e. Program of Richard repository monitoring, Program of Dukovany repository monitoring and Program of Bratrství facility monitoring. These documents establish together with other issues, which variables, related to the working place, persons, exhausts and the environment are monitored and the frequency of corresponding measurements. RAWRA as a licensee of State Office for Nuclear Safety is obliged to carry out all measurements included in these approved programs of monitoring.
Overview of monitored items and frequency of their monitoring is given in the following table (measured variables are given in brackets):
Richard repository
| Monitored Item |
Frequency of monitoring |
|
Workplace |
| gamma radiation dose rate |
during work |
| surface contamination |
after work completion + monthly |
| volume activity in the air: |
|
| a) 222Rn |
continuously |
| b) 3H |
over three months |
| underground water (total alpha and beta activity, activity of selected radio nuclides, namely 241Am, 239Pu, 90Sr, 3H and 14C |
monthly |
|
Personal monitoring |
| surface contamination |
when leaving controlled area |
| personal dose from external radiation |
monthly (films) and during work (electronically) |
| radon intake evaluation |
monthly |
| personal dose from external radiation |
annually |
| Liquid discharges (total alpha and beta activity, activity of selected radio nuclides, namely 241Am, 239Pu, 90Sr, 3H and 14C) |
weekly |
|
Environment |
| external irradiation |
evaluation of TLD once every 3 months |
| water (total alpha and beta activity, activity of selected radio nuclides, namely 241Am, 239Pu, 90Sr, 3H and 14C) |
once every 3 months |
Dukovany repository
| Monitored Item |
Frequency of monitoring |
|
Workplace |
| gamma radiation dose rate |
monthly |
| beta surface contamination |
monthly |
|
Personal monitoring |
| surface contamination of persons |
when leaving controlled area |
| personal dose from external radiation |
monthly evaluation (film dosemetry), always when leaving controlled area (electronic dosemetry) |
| personal dose from internal radiation |
annually |
|
Discharges |
| gamma volume activity |
before discharging of controlled pool |
| gamma volume activity of selected radionuclides |
monthly (mixed samples of controlled tanks - spectrometric measurements) |
| volume activity of 90Sr |
monthly (mixed samples of controlled tanks) |
| volume activity of 99Tc, 129I, 241Am |
annually (mixed samples of controlled tanks) |
|
Environment |
| dose equivalent rate of gamma radiation |
evaluation once over 3 months (thermoluminiscent dosemetry) |
| balance measurements of volume activity of selected radionuclides |
once every 3 months |
Monitoring of the Bratrství Repository
| Parameters monitored |
Frequency of measurement |
|
Workplace monitoring |
|
input of equivalent gamma radiation dose |
during the exposure of persons in underground areas |
|
equivalent volume activity of radon |
during the exposure of persons in underground areas; at least once a year |
|
volume activity of long-lived radionuclei of the uranium-radium series, emitting alpha radiation |
during the exposure of persons in underground areas; at least once a year |
|
volume activity and concentrations in samples of mine water
-
the total volume activity of alpha radiation
-
the total volume activity of beta radiation
-
the uranium concentration
-
the total volume activity of 226Ra |
quarterly |
|
Monitoring of liquid effluents |
|
volume activity and concentrations in samples of water flowing from the underground caverns
-
the total volume activity of alpha radiation
-
the total volume activity of beta radiation
-
the uranium concentration
-
the total volume activity of 226Ra |
quarterly |
|
Monitoring of the environment |
|
volume activity and concentrations in samples of surface water in the workplace vicinity
-
the total volume activity of alpha radiation
-
the total volume activity of beta radiation
-
the uranium concentration
-
the total volume activity of 226Ra |
quarterly | |
