Khladon (Freon 218) Venting: Samokutyaev and Serova performed steps to release pressure in the Russian Segment Air Conditioner System [СКВ] by venting Khladon (Freon 218) overboard. However, several of the quick disconnects that were actuated during the procedure exhibited leaks. As a result, the Khladon was vented into the cabin instead. The quantity released was ~100g, which results in a density of 117 mg/m3 over the volume of ISS after about 2 hours, which was below the stated ISS zero risk flight rule limit of 150 mg/m3. As part of nominal air scrubbing process, the Russian Air Purification System [БМП] and the USOS Trace Contaminant Control System (TCCS) will remove residual Khladon from the atmosphere. Intermodule ventilation configuration was not changed as a result of this inadvertent release.