This standard specifies the requirements for ensuring radiation hardness assurance (RHA) of space projects. These requirements form the basis for a RHA program that is required for all space projects in conformance to ECSS-Q-ST-60. RHA program is project specific. This standard addresses the three main radiation effects on electronic components: Total Ionizing Dose (TID), Displacement Damage or TotalNon-Ionizing Dose (TNID), and Single event Effects (SEE). Spacecraft charging effects are out of the scope of this standard.In this standard the word “component” refers to Electrical, Electronic, and Electromechanical (EEE) components only. Other fundamental constituents of space hardware units and sub-systems such as solar cells, optical materials, adhesives, polymers, and any other materialare not covered by this standard.This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.