ASME QME-1-2000 pdf download.Qualification of Active Mechanical Equipment Used in Nuclear Power Plants.
QR-5300 General Requirements for a Qualication Program A qualication program for active mechanical equip- ment used in a nuclear power plant shall include the following: (a) qualication requirements; (b) a process to demonstrate that the equipment satises the qualication requirements by analysis, test, operating experience, or a combination of these; (c) evidence of successful completion of qualifi- cation; (d) a documentation le containing QR-5300(a), (b), and (c). The requirements to satisfy QR-5300(a), (b), (c), and (d) should be contained in the equipment qualication specication. In the qualication program, aging, qualied life, and margin shall be considered as described in the following paragraphs.
QR-5330 Margin. Margin shall be considered in the qualication program to account for variation in performance, errors in experimental measurements, and variations in commercial production, thereby providing a level of condence that the equipment can perform under the most adverse service conditions for which it is qualied. Other sections and Appendix QR-A provide additional guidelines on margins as required for metallic compo- nents. Additional guidelines on margins for nonmetallic components are provided in Appendix QR-B. In identifying margin, it is necessary to consider not only the accuracy of the design data, but also the dimensional tolerances for the parts and the accuracy of the instrumentation. In all cases, engineering judgment should be used to determine the adequacy of qualica- tion margins. This determination shall be appropriately documented. Examples of parameters that should be considered for appropriate margins are maximum or minimum external temperatures and pressures, radiation levels, electrical voltages and frequencies, operating time peri- ods, dynamic excitation (including vibration), and accu- racy of data and calculation methods.
QR-7321 Aging. As described in QR-7311, aging is not normally a signicant concern for metallic compo- nents; however, it should be one of the items considered: (a) analysis may be used to eliminate consideration of environmental stresses or aging effects that have an insignicant impact upon equipment functional integrity; (b) analysis may be used to extrapolate or otherwise account for the effect of equipment design modications as well as verication of aging or environmental parame- ters in instances when intended application exceeds prior qualication constraints. When analysis is used to simplify or extend equipment qualication, the analysis shall consider signicant aging mechanisms for the item, such as thermal, radiation, wear, and chemical. Analysis methods may be used in conjunction with supportive empirical data to simplify or supplant the test aging exercise for nonmetallic items.ASME QME-1 pdf download.