The radiation environment specification forms part of the product requirements. Qualification margins (the required minimum RDM) are part of the specification, since the objective of the qualification process is to demonstrate whether an entity is capable of fulfilling the specified requirements, including the qualification margin in ECSS-S-ST-00-01. As a result of this qualification process, the achieved RDM is established, to be compared with the required RDM.
This Clause specifies requirements for addressing and establishing RDMs. Margins are closely related to hardness assurance as well as to environment uncertainties. Hardness assurance is covered in ECSS-Q-ST-60, and environment uncertainties and worst-case scenarios are specified in ECSS-E-ST-10-04.