Evaluation of environmental tritium level in preoperational period of Cernavoda CANDU Nuclear Power Plant

In Romania, a CANDU Nuclear Power Plant with five reactors of 600 MWe is under construction at Cernavoda town and in 1996 the first reactor was put in operation. The background level of tritium concentration was determined in preoperational stage. The mean values determined are: (7.4+/-5.5) Bq/l in air humidity, (3.1+/-1.0) Bq/l in water, (3.5+/-0.7) Bq/l in tissue water from vegetable and (4.9+/-1.7) Bq/l in tissue water from cereals. The transfer parameters for deposition from atmosphere on forage and crops (P-14), and the contamination of land and vegetation by spray irrigation water, (P-24) were evaluated at (29-49) and (0.90+/-0.27), respectively.