Often information is available from document sources at the system and component level only. The dedication plan will contain sufficient explanation to provide the basis for conclusions reached and understanding of how the safety functions were determined. Often facts states are qualitative, so the resulting decisions will be sufficiently conservative to allow for some amount of unknown. State the references used to determine the application and functional information associated with safety functions. Failure modes and effects analysis (FMEA) in the technical evaluation may be the basis for documenting that the performance or failure of commercial grade items have no adverse impact on the safety function(s) of equipment, or information supporting the grading or rigor to be applied to the acceptance process. A formalized FMEA process is not required; however, credible failure of the safety function(s) shall be considered and documented in the technical evaluation considering functional classification, design margin, and to form the basis for selection of critical characteristics and acceptance methods. Guidance for conduct of a FMEA as applied to performance of a technical evaluation for CGD can be found in Appendix A. Acceptance Plan The PE selects the considering the following: CC’s Select sufficient characteristics to establish an appropriate level of confidence in the ability of the item to perform its safety function commensurate with its safety significance Select characteristics that indicate acceptability and are verifiable, giving preference to those that are cost effective Some characteristics, such as pressure retention, provide direct and indirect assurance of acceptability. Pressure retention directly indicates component assembly integrity but also indirectly indicates material properties such as strength. For commodity items such as fasteners in broad applications, generally verification of compliance with governing industry standards is appropriate The overall level of assurance obtained is the cumulative effect of the characteristics selected, the method of verification, the sample selected, and tolerances selected Seismically sensitive or environmentally qualified items may drive selection of specific characteristics The PE determines how each critical characteristic will be verified, provides the acceptance criteria, and documents the selected critical characteristics on the CGD plan. The PE may provide a rationale for a characteristic which is not included as part of the critical characteristics for acceptance of the CGI/CGS. Complete the CGD plan by documenting the critical characteristic and value for acceptance. Adapt the format of the CGD plan section as necessary to enter information such that it can be directly applied by groups performing acceptance activities. Attach tables or sketches as necessary for clarification. Explain the basis for selection when necessary to relate the critical characteristics to the safety function.
Often information is available from document sources at the system and component level only. The dedication plan will contain sufficient explanation to provide the basis for conclusions reached and understanding of how the safety functions were determined. Often facts states are qualitative, so the resulting decisions will be sufficiently conservative to allow for some amount of unknown. State the references used to determine the application and functional information associated with safety functions. Failure modes and effects analysis (FMEA) in the technical evaluation may be the basis for documenting that the performance or failure of commercial grade items have no adverse impact on the safety function(s) of equipment, or information supporting the grading or rigor to be applied to the acceptance process. A formalized FMEA process is not required; however, credible failure of the safety function(s) shall be considered and documented in the technical evaluation considering functional classification, design margin, and to form the basis for selection of critical characteristics and acceptance methods. Guidance for conduct of a FMEA as applied to performance of a technical evaluation for CGD can be found in Appendix A. Acceptance Plan The PE selects the CC’s considering the following: Select sufficient characteristics to establish an appropriate level of confidence in the ability of the item to perform its safety function commensurate with its safety significance Select characteristics that indicate acceptability and are verifiable, giving preference to those that are cost effective Some characteristics, such as pressure retention, provide direct and indirect assurance of acceptability. Pressure retention directly indicates component assembly integrity but also indirectly indicates material properties such as strength. For commodity items such as fasteners in broad applications, generally verification of compliance with governing industry standards is appropriate The overall level of assurance obtained is the cumulative effect of the characteristics selected, the method of verification, the sample selected, and tolerances selected Seismically sensitive or environmentally qualified items may drive selection of specific characteristics The PE determines how each critical characteristic will be verified, provides the acceptance criteria, and documents the selected critical characteristics on the CGD plan. The PE may provide a rationale for a characteristic which is not included as part of the critical characteristics for acceptance of the CGI/CGS. Complete the CGD plan by documenting the critical characteristic and value for acceptance. Adapt the format of the CGD plan section as necessary to enter information such that it can be directly applied by groups performing acceptance activities. Attach tables or sketches as necessary for clarification. Explain the basis for selection when necessary to relate the critical characteristics to the safety function.
Eval.%20%26%20Acceptance%20of%20Commercial%20Grade%20Items%20%26%20Services_06-06-2012.docx