Table 2-1. System Interaction Effects on Performance Categorization

DOE-STD-1021-93

methods of precluding the interaction will be to subject the source to additional NPH

requirements corresponding to PC-4 (see also note 4 below).

(4) The source SSC shall be designed/evaluated to those requirements of the revised

performance category that are essential for precluding adverse interaction with the target (in

other words, it is not necessary to satisfy the functional requirements of the source SSC

when subjected to these additional NPH requirements unless essential for precluding adverse

interaction).

The basis for determining the revised NPH requirements for the source SSC is that the

performance goal of the target SSC shall not be compromised because of system interaction

effects.

(5) For these cases, consideration of interaction effects does not require additional NPH

requirements for the source SSC.

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