[en] The power update has required to modify the water system of condensate to increase the overall contribution to the water supply system and increase the thermal load from the primary system through steam generators.

[en] In this paper, we describe the XENON100 data analyses used to assess the target-intrinsic background sources radon (²²²Rn), thoron (²²⁰Rn) and krypton (⁸⁵Kr). We detail the event selections of high-energy alpha particles and decay-specific delayed coincidences. We derive distributions of the individual radionuclides inside the detector and quantify their abundances during the main three science runs of the experiment over a period of ∝ 4 years, from January 2010 to January 2014. We compare our results to external measurements of radon emanation and krypton concentrations where we find good agreement. We report an observed reduction in concentrations of radon daughters that we attribute to the plating-out of charged ions on the negatively biased cathode. (orig.)