DESIGN OF MECHANICAL SYSTEMS AND COMPONENTS

DESIGN OF MECHANICAL SYSTEMS AND COMPONENTS Plant Duty Cycle... 

This section describes the design of mechanical systems and components for the Standard MHTGR. Mechanical systems and components required to fulfill lOCFRlOO-related radionuclide control functions under design basis conditions to meet the Top-Level Regulatory Criteria are designed to the applicable sections of ASME III (Ref. 1) as described below. Should validated methods consistent with the basic philosophy of the Integrated Approach be developed and found to be capable of providing results in which adequate confidence can be placed, the ASME Code may be modified or alternative methods applied and submitted for NRC concurrence. 

This code is utilized because it provides the most reasonable, practical, and currently established methodology for the design of mechanical systems and components which must fulfill, with a high degree of confidence, lOCFRlOO-related radionuclide control functions under design basis conditions. The loads and load combinations to be applied are discussed in Section 3.2.3.1. Exceptions to these loads and load combinations may be proposed based upon the results of relevant probabilistic analyses or assessments. 

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