RADIOLOGICAL CONDITION OF ANDREEVA BAY TERRITORY AND WATER AREA

Buildings and structures of the SNF and RW interim storage facilities at Andreeva Bay (former coastal technical base of the Northern Fleet) were constructed at the end of 1950s – in the beginning of 1960s. Since delivery of SNF significantly exceeded its removal, a large amount of fuel ( ~ 100 NPS reactor cores) and RW has accumulated at the storage facilities. During more than 40 years of operation the buildings and structures have not undergone any repair, hence many of the storages are in emergency condition [1]. Decreasing leakproof of the storages has been leading to radioactive substances being taken to the site by underground water. Snow slush and rain flows have been gradually extending the contamination area and taken radionuclides into Andreeva Bay sea waters. Radioecological measurements within the site and the water area. Surveys of Andreeva Bay buildings, structures, site and water area were carried out on a repeated basis by the Navy Radiation Safety Service, as well as by NIKIET experts (land survey) and KI experts (water area survey). In 2002-2004 owing to gratuitous financial aid of the Norwegian Radiation Protection Authority radiation contamination maps (Fig.1) were drawn, as well as hydrogeological and radiation and geological surveys of the most part of Andreeva Bay area were carried out. These measurements differed from the previous ones in term of quality and quantity: the number of ground samples measurements exceede