[en] During the commissioning (startup) of the present fleet of American nuclear plants there were shortages of experienced construction test and startup test engineers. Given the US regulatory requirements associated with new plant starts (i.e., Chapter 10 US Code of Federal Regulations Part 52), there will be even greater knowledge and performance demands on the staff assigned to these new plants than those in the 1970s and 80s. Success in future startups, resulting in plants with high sustained capacity factors, means that systematic efforts to avoid a similar shortage of qualified startup personnel must be undertaken today. This Appendix describes some historical aspects of US nuclear plant construction in an effort to identify approaches to improved performance of plant staff as they construct, start and operate the new generation of reactor plants. The need for a new generation of highly trained construction and startup testing staff finds its roots in many places. The expectations of the financial community, nuclear industry (both domestic and international), regulatory bodies, governmental bodies, and the public are far different from when the existing fleet of commercial American nuclear plants was constructed and started. The next wave of light water commercial nuclear plants will be constructed and brought on line in a significantly more rigorous atmosphere. Construction and startup of new plants must be predictably short and essentially trouble-free. Staff must be sufficiently trained to recognize and resolve problems before they occur as opposed to waiting for problems to emerge. Construction Testing and Startup Testing are crucial parts of construction and initial operation of a plant. In the previous generation of reactors, these activities were performed with Construction Test and Startup Test Engineers. The tests they performed verified that the plant's systems, structures, and components had been properly constructed and prepared, and were operating as designed. These terms (construction test engineer and startup test engineer) have different meanings in different countries but essentially the commissioning functions and allied responsibilities are implied as a part of the follow-on discussions in this Appendix