Resolution of Generic Safety Issues: Item B-46: Costs of Alternatives in Environmental Design ( NUREG-0933, Main Report with Supplements 1–35 )
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DESCRIPTION
Frequently, regulatory changes are made in the applicant's proposal for design and/or operation of systems or subsystems based on perceived needs to mitigate impacts on the environment. Also, differences in design and/or operation are an integral part of the treatment of alternatives in the EIS. The cost of such changes or alternatives, if calculated, are determined on an ad hoc basis. However, these costs are not always calculated and many times, when done, are not calculated on a consistent basis. A more consistent and comprehensive analysis of the cost of various design and operating modes appears to be warranted so that there is a reasonable and documented rationale for determining such costs. Such costs would also have to include costs of redesign. Once experience is gained in this area, consideration would be given to expanding the study to the cost of making changes because of changing safety criteria, both from a redesign standpoint as well as from a "backfit" point of view. This item is documented in NUREG-0471.3
CONCLUSION
Cost estimates are made on a plant-specific basis as needed in the licensing process.412 Thus, this Environmental issue has been dropped from further consideration.
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