Two separate conceptual designs of commercial fusion power plants have been developed for the U.S. Department of Energy. Inertial confinement reactor designs based on the driver systems of the KrF excimer gas laser and the heavy ion linac were developed and analyzed. The preliminary system design for reactor exhaust gas recovery and purification for tritium processing is described. The integrated design consists of a palladium-silver permeator for impurity removal, a high temperature isotope exchange reactor for impurity processing, pressure swing adsorption for tritium recovery from helium and water distillation and cryogenic distillation for isotope separation. A comparison between inertial fusion and magnetic fusion tritium systems is presented.