Qualification tests of coatings for inner walls in a BWR reactor

Qualification tests of coatings for inner walls in a Boiling Water Reactor (BWR) were performed under request for decontamination purposes. Several ty pes of coatings were contaminated with fission products obtained from a UO2 ,solution irradiated in a nuclear research reactor,afterwards a successive decontamination process according with standards based on gamma activity wa s applied. In each decontamination stage, alpha and gamma activity measurem ents were made on the probes. Results obtained for cl activity using nuclea r track detectors are presented as an alternative assessment method during the decontamination process.