This part of ISO 7503 applies to the evaluation of contamina-tion on surfaces of equipment and facilities, containers of radioactive materials and sealed sources in terms of activity per unit area.
This part of ISO 7503 does not apply to the evaluation of con-tamination of the skin and of clothing.
It applies to beta-emitters the maximum beta energy, fp,?,,,, of which is greater than 0,15 MeV and alpha-emitters.
It is restricted to beta- and alpha-emitters, the production r?te of which, with regard to beta-particles plus monoenergetic electrons and alpha-particles respectively, is near to 100 par-ticles per 100 decays (see table 3 in the annex).
For the purposes of this part of ISO 7503 the term "beta energy" refers to maximum beta energy.
NOTE — Evaluation of tritium surface contamination is dealt with in ISO 7503-2. Other radionuclides of practical importance (for example electron capture and isomeric transition emitters) will be dealt with in a future International Standard.
SIS SS-ISO 7503-1:1990 history
1990SIS SS-ISO 7503-1:1990 Evaluation of surface contamination — Part 1: Beta-emitters (maximum beta energy greater than 0,15 MeV) and alpha-emitters