Regional Basic Professional Training Course in Korea

Regional Basic Professional Training Course (BPTC) on Nuclear Safety
Operating the reactor in such a way as to avoid fuel failures, and to remove failed
fuel as soon as practicable;
Reducing leakage from the primary coolant system and other systems; and
Keeping coolant impurity levels as low as practicable.
In addition, the following measures are needed for restricting liquid waste production:
Planning and performing normal work, and especially maintenance work, with care
to avoid the spread of contamination;
Optimizing decontamination procedures; and
Reducing the production of secondary waste by proper selection of waste treatment
methods.
The environmental doses can be reduced by delaying radionuclides in off‐gas systems or
liquid waste storage tanks in order to allow radioactive decay and by removing
radionuclides from the effluent stream by means of filters and ion exchange resins for
disposal by other means. It should, however, be noted that in some cases, the retention of
radionuclides in off‐gas systems or management of liquid wastes might cause worker
doses, which overweigh the potential harm to the members of the public, if released
directly. The same trade‐off has to be made between present doses resulting from effluent
discharges and future doses associated with disposal of solid waste resulting from
solidification of those effluents.
Demonstrating the compliance
In order to demonstrate that the authorized discharges are in compliance with the limits,
effluent monitoring is required. Similarly, in order to check the assumptions used to
evaluate critical group doses, environmental monitoring is also required. Environmental
monitoring also provides an additional means, besides effluent monitoring, of checking
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