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ANSI/ANS-58.14-2011 (R2022)
Safety and Pressure Integrity Classification Criteria for Light Water Reactors
This standard specifies criteria for the safety classification of items (SSCs and parts, including consumables) in a LWR nuclear power plant as safety-related (Q), non-safety-related with augmented requirements (A), or non-safety-related (N). In addition, pressure integrity classification criteria are provided for the assignment of Classes 1, 2, 3, 4, or 5 to pressure-retaining items.
American National Standards Institute [ansi]