Exemption limit, LL
The name come for the French Limite de libération (LL). In German is it known as the Befreiungsgrenze and in English the Exemption limit. Exemption limit LL (Bq/g) was previuosly denoted by LE.
Exemption limit for the specific activity in Bq / g (LL). [Sources: IAEA, Safety Requirements: Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards, Revision of IAEA Safety Series N ° 115, GOV2011 / 42, 15 Aug. 2011; Table I-2; Brenk System Planning, Calculation of exemption limits and release values for nuclides, for which none Values in the IAEA-BSS are available Final Report, Aachen, 2012.]
Radionuclides, for which the contribution of daughter nuclides in the determination of the LL value is shown in column 9 of the table  marked. In the table below, for each radionuclide, for which a daughter nuclide was considered, the last radionuclide the decay chain specified, along with the mother for the calculation of the LL value.
Example: Ra-226 -> Po-214 means that the daughter nuclides of Ra-226 to Po-214 (i.e., Rn-222, Po-218, Pb-214, Bi-214, and Po-214) with the mother to calculate LL.
For H-3 and S-35, which are present in different chemical forms can, the calculation of LL in the report of Brenk with the more pessimistic Dose coefficients for each route of exposure (e.g., for S-35 with in from S-35 org and one from S-35 inorg). The laid down in this way LL values were applied to all chemical forms of radionuclide.