a. In assessment of a part’s total dose behaviour (ionizing and non-ionizing), the achieved RDM shall include the following items as part of the radiation hardness assurance process:
1. test conditions leading to worst-case,
2. lot-to-lot variability,
3. intra-lot variability,
4. worst-case analysis as specified in ECSS-Q-ST-30,
5. consistency of test results with respect to previous testing.
NOTE The main margin in radiation dose assessment is provided through the radiation hardness assurance plan. As specified in ECSS-Q-ST-60, a radiation hardness assurance plan is prepared, agreed and reviewed at all mission phases.
b. If a device is sensitive to TNID, then this shall be included in the establishment of the achieved RDM.