Environmental Qualification 2
Environmental Qualification 2 : Used to ensure that safety-class structures, systems, and components can perform all safety functions, as determined by the safety analysis, with no failure mechanism that could lead to common cause failures under postulated service conditions. The requirements from American National Standards Institute/Institute of Electrical and Electronics Engineers (ANSI/IEEE) Standard 323 for mild environments shall be used unless the environment in which the structure, system, or component is located changes significantly as a result of the design basis accidents. In general, qualification for mild environments should consist of two elements: (1) Ensuring that all equipment is selected for application to the specific service conditions based on sound engineering practices and manufacturers' recommendations. (2) Ensuring that the system documentation includes controls that will preserve the relationship between equipment application and service conditions
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