National Report of the Slovak Republic - Radiation and Nuclear Safety , September 1998

6.4 RAW Emission Limits


Limit activity values for gas and liquid discharges are a part of OLC approved by the Regulatory Authorities. The purpose of the limits is to secure that radioactive substance discharges into the environment under normal as well as abnormal operating conditions do not cause the effective dose equivalent for general public individuals exceed the value of 2.10-4 Sv/year from stack discharges, and 5.10-5 Sv/year from liquid discharges.

Table 1 shows limit values for discharges from NPP Bohunice and Mochovce, and Table 2 illustrates the respective values for SE-VYZ operations.

TABLE 6.4.1

Annual Discharge Limits

Ventilation stack

Liquid discharges

Rare gases

(any mix)

Iodine

(gas and airborne particles phase)

Airborne particles - long-life radionuclide mix

Sr 89, 90

Tritium

Other corrosion and fission products

Bq/year

Bq/year

Bq/year

Bq/year

Bq/year

Bq/year

Bohunice V-1

4.1 . 1015

6.75 . 1010

1.8 . 1011

1.35 . 108

Bohunice V-2

4.1 . 1015

4.4 . 1011

1.8 . 1011

5.7 . 108

1.0 . 1013

1.0 . 109

Mochovce 1,2

4.1 . 1015

1.2 . 1011

1.7 . 1011

1.2 . 1013

1.0 . 109

S A1, V1, V2

4.37 . 1013

3.8 . 1010

Daily Discharge Limits

Volume activity [Bq/m3]

Rare gases

(any blend)

Iodine

(gas and airborne particles phase)

Airborne particles - long-life radionuclide mix

Sr 89, 90

Tritium

Other corrosion and fission products

Bq/year

Bq/year

Bq/year

Bq/year

[Bq/m3]

[Bq/m3]

Bohunice V-1

5.6 . 1013

9.25 . 108

2.5 . 109

1.35 . 108

1.95 . 108

3.7 . 104

Bohunice V-2

5.5 . 1013

6.0 . 109

2.5 . 109

1.35 . 108

1.0. 108

2 . 104

Mochovce 1,2

5.6 . 1013

1.6 . 109

2.4 . 109

1.1 . 108

4 . 104

 

 

 

TABLE 6.4.2

Annual discharge limits for ventilation stack

Liquid discharges

 

Airborne particles- long-life radionuclide mix

Sr 89, 90

Volume activity

SE-VYZ

b +g

a

Trítium

Other corrosion and fission products

Bq/year

Bq/year

[Bq/m3]

[Bq/m3]

MGU

9.4 . 108

8.8 . 106

2.8 . 107

1.95 . 10 8

3.7 . 104

ISFS

3.0 . 108

Weekly discharge limits - ventilation stack

Bq/week

MGU

9.0 . 107

8.5 . 105

Bitumenation plant

9.0 . 107

8.5 . 105

ISFS (daily limit)

5.0 . 106



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