Methodical Recommendations must be used for carrying out primary inventory of radioactive substances and radioactive waste within the System and describe the modalities of carrying out inventory and contain inventory forms and the instructions for filling them in. Methodical Recommendations consist of 5 Sections. Section 1 is the introductory part. Section 2 specifies terms and definitions. Section 3 lays down the main provisions. Section 4 regards preparatory activity and carrying out inventory