Radiation Surveillance and Radiation Dose Control at Cernavoda Nuclear Power Plant
نویسندگان
چکیده
În această lucrare vom evalua posibilitatea de utilizare a unor dozimetre personale electronice (EPD) pentru dozimetria neutronilor la Centrala Nuclearelectrică de la Cernavodă. În cadrul evaluări vom verifica dacă aceste dozimetrele au un răspuns corespunzator la câmpurile de radiaţii existente într-o centrală de tip CANDU şi dacă prezintă o rejecţie corespunzătoare la câmpurile gama pentru canalul de neutroni. Aceste evaluări au fost realizate în mai multe camere din Clădirea Reactorului de la Unitatea 1 a CNE Cernavoda în câmpuri mixte gama-neutroni. O zonă cu caracteristici speciale o reprezintă camera in care se afla componente auxiliare ale Sistemului de Transport al Căldurii care are un spectru specific bogat în neutroni epitermici. Pentru determinarea dozelor ambientale am folosit un monitor de neutroni model Eberline ASP-2/NRD, iar pentru verificarea rejecţiei gamma a fost folosit un iradiator tip Shepherd model 78. În condiţiile prezentate, toate EPD-urile evaluate au trecut testele, acestea având o bună corelare cu valoarea de referinţă ceea ce dovedeşte că pot fi utilizate pentru dozimetria personală de neutron, fiind necesar utilizarea unui factor de corecţie dependent de spectrul de neutroni specific zonei de lucru.
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