INES-event
INES 1

Loss of radioactive source Cs-137 included in a Beckman device

In 29 November 2001, during checking of radioactive sources according to procedure SI-01365-RP1, was descovederd the absence of a solid Cs-137 source no. CNE PROD 36. The activity of source was 111*exp(4) Bq (1986). The source is a part of Beckmann equipment from Environmental Surveillance Laboratory. The Beckmann equipment was taken away from service at the end of 1999 and transferred at the storehouse obsolette equipment at the beginning of 2001, without removal of radioactive source. After the regulatory Body inspection on-site were disposed the following countermeasures: checking the existence and physical integrity of all radioactve sources; any metal piece can be removed from the Unit 1 on the base of a written procedure approved by Regulatory Authority; reassessment of all reports concerning radiation sources; application of all necessary administrative actions.

Location: CERNAVODA-1
Event date: Thu, 29-11-2001
Nuclear event report
Legenda & explanation