Regional Basic Professional Training Course in Korea

Regional Basic Professional Training Course (BPTC) on Nuclear Safety
filters. The effluent is either reused in the plant systems or released to environment after
monitoring. The Korean Standard Nuclear Power Plant is furnished with a selective ion
exchange system instead of an evaporator to increase efficiency in the treatment of liquid
radioactive waste.
Safety regulation prescribes the maximum radioactivity concentration limits (i.e. ECL)
for liquid effluent being discharged into the environment on the restricted area boundary.
The operators shall conduct periodic assessments for the expected off‐site dose due to the
liquid effluent discharged into the environment, and routinely report results to the
regulatory body.
Solid radioactive waste management
In case of PWR nuclear power plant, most solid radioactive waste consists of dry active
waste (DAW) and secondary process waste. The DAW is generated during maintenance
and repair of contaminated systems and includes items such as used parts, papers, used
clothes, gloves, shoes, etc. Secondary waste is generated from the liquid and gaseous
radioactive waste treatment system and included concentrated wastes from evaporators,
spent resin from demineralizers, and spent filters from liquid purification systems.
Solidification by cement, which was commonly applied in the past, is not used any
longer. Instead, the concentrated waste is now dried and stabilized by paraffin in drums
and spent resin is kept in a high‐integrated or equivalent container, after drying in the
spent resin drying facility. Spent filters are stored in a shielding container.
In general, most solid waste from the nuclear facilities consists of protective articles such
as clothes, gloves, metals generated during facility repair, and so on. They are classified
into miscellaneous wastes, metals, synthetics, deposits, wood, glass, etc., and packed in
200L steel drums, after solidification as necessarily. The drums are stored in the waste
storage facility, after measuring radioactivity, weight, surface contamination level, and
radiation dose rate for each package.
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