BS ISO 7503-1:2016

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviations
4 Objectives of surface contamination measurements
5 Direct and indirect methods of assessing surface
   contamination
6 Radionuclide identification and spectral analysis
7 Monitoring instruments
8 Estimation of surface contamination monitor response
   and calibration factors
9 Evaluation of measurement data
10 Uncertainties
11 Test report for a surface contamination instrument
Annex A (informative) - Calibration of surface contamination
        instruments
Annex B (informative) - Example of surface contamination
        estimation
Annex C (informative) - Calibration of dose rate measuring
        instruments
Bibliography

Applicable to the assessment of surface contamination by direct and indirect measurements and the calibration of the associated instrumentation.

ISO7503 (all parts) and ISO8769 are addressed to the people responsible for determining the radioactivity present on solid surfaces. ISO7503 is published in three parts and can be used jointly or separately according to needs.

This part of ISO7503 relates to the assessment of surface contamination by direct and indirect measurements and the calibration of the associated instrumentation.

The standard applies to alpha-, beta- and photon emitters and is intended for use by hospitals, universities, police, or industrial establishments. The standard also can be used in the assessment of activity on trucks, containers, parcels, equipment and is applicable in any organization which handles radioactive materials. Generally, it is applicable to well defined flat surfaces where direct methods are applicable, however, it can also be used for surfaces which are not flat and where indirect wipe tests would be appropriate. These investigations may be carried out on containers, inaccessible areas, non-flat areas where wipe tests can be used. This part of ISO7503 may be useful in emergency situations, i.e. in nuclear accidents where health physics professionals would be involved.

This part of ISO7503 does not apply to the evaluation of contamination of the skin, of clothing and of loose material such as gravel.

NOTE The test method using wipe-test samples for the evaluation of radioactive surface contaminations is dealt with inISO7503-2. The calibration of instruments for the evaluation of radioactive surface contaminations is dealt with in ISO7503-3.