Javys, a.s.

Galéria

Provided services

(PDF, 1,6 MB) 

Radioactive waste characterization

Site:   Jaslovské Bohunice
References:   JAVYS
Legislation:  

Stipulates criteria of the acceptance of very low and low level RAW in the repository.

 



1. DESIGN AND IMPLEMENTATION OF RAW CHARACTERIZATION SYSTEM

  • Elaboration of RAW characterization procedure
  • Setting the reference radionuclides necessary for the determination of the activity of the radionuclides dificult to measure.  
  • Design of software and hardware laboratory equipment necessary for RAW characterization
  • Design and elaboration of methodologies for the determination of the radiochemical, physical, chemical,and mechanical properties of RAW in compliance with acceptance criteria

2. DESTRUCTIVE ANALYSES OF RAW SAMPLES

Radiochemical analysis

  • gammaspectrometry
  • alphaspectrometry
  • liquid scintillation spectrophotometry
  • total alpha and beta activity measurement

Chemical analysis

  • pH
  • specific conductivity
  • concentration of cations by absorption spectrophotometry
  • concentration of anions by UV/VIS spectrophotometry
  • concentration of boric acid by potentiometric titration
  • concentration of tensides by extraction
  • chemical and biological oxygen consumption
  • water hardness

Physical and chemical analysis

  • thermal properties of substances by differential thermal analysis
  • RAW leachability index
  • viscosity of solutions
  • basic physical properties of bitumen (flash point, softening point, penetration, water content)
  • content of soluble and insoluble substances in solutions
  • sorptive capacity of ion exchangers

Mechanical properties

  • determination of compression strength of cement products
  • determination of discharge speed of cement paste

3. NON-DESTRUCTIVE INSPECTION OF RAW

  • determination of gamma activity of RAW in 200 l barrels (gamma scanner)
  • determination of plutonium content of RAW in 200 l barrels using the method of measuring passive neutrons (alpha scanner) 

 

detail
detail