DIN Standards Committee Materials Testing
DIN 25457-1
Activity measurement methods for the clearance of radioactive substances and nuclear facility components - Part 1: Fundamentals
Aktivitätsmessverfahren für die Freigabe von radioaktiven Stoffen und kerntechnischen Anlagenteilen - Teil 1: Grundlagen
Overview
This document applies for activity measurements in the framework of the release of radioactive substances as well as mobile objects, buildings, areas, installations or parts of installations that are activated or contaminated, originating from activities in the context of the Strahlenschutz-Verordnung (the German Radiation Protection Act) (StrlSchV) and are intended for use, recovery, disposal, possession or proliferation to third parties as non-radioactive substances. This document shall also be applied when removing mobile objects from controlled areas according to § 44, Chapter 3 StrlSchV (Radiation Protection Ordinance). In the following text specifications for the release also apply for the removal. In cases where the releases are planned from handling in accordance with § 7 StrSchV and conservative calibration of the measurement devices is in line with the requirements (see 4.1.4), the prodedure according to DIN 25457-1, Supplement 1, is possible. The committee responsible for this document is NA 062-07-46 AA "Reststofffragen" ("Questions concerning residues") at DIN.
