PENGARUH FAKTOR IKLIM TERHADAP

POLA SEBARAN INTEGRAL KONSENTRASI

KONTAMINAN RADIOAKTIF TAHUNAN DARI

CEROBONG REAKTOR KARTINI YOGYAKARTA

KE UDARA LINGKUNGAN SEKITARNYA

**Mondjo **

Dosen Jurusan Teknik Nuklir Fakultas Teknik UGM

**Sudibyakto**

Dosen Fakultas Geografi UGM dan Kepala Pusat Studi Bencana Alam UGM

**Abstract**

This research is to study the impact of climate factors and environmental risk due to operation of The Nuclear Reactor of Kartini that is proportional to the annual integrated concentration of the radioactive contaminant into the air of surrounding areas A research has been done to design a mathematical model to relate the annual integrated concentration of the radioactive contaminant with the radioactive contaminant released from the Reactor of Kartini (the rate the effluents are released, type of the radioactive contaminant, dimension of stack), and climatological factor (wind direction, wind speed, solar radiation percentage) . The result shown that the maximum of annual integrated concentration of the radioactive contaminant of Argon-41 had been on the decrease but variation of the annual climatological factor was not significant with the distribution of it. The map of the annual integrated concentration of Argon-41 shown up the maximum of the annual integrated concentration of Argon-41 was 0,6 mCi/m3. The area where had the value of the annual integrated concentration of Argon-41 of 0,4 - 0,6 mCi/m3 (equal to the mean concentration of Argon-41 of 4,04 - 6,06 ´ 10-5 mCi/m3) for the direction of 60° on the distance of 200 - 1075 m, the direction of 30° on the distance of 200 - 800 m, and the direction of 90° on the distance of 300 - 575 m. The contribution of contaminant released from the stack of the Reactor of Kartini was lower than the natural radioactivity so the operation of the Reactor of Kartini was not significant with the degree of the environmental radioactivity

**Key words : **Climate factors, Integrated concentration, radioactive contaminant

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