To date, the research effort to collect design suggestions has been very successful. Since the start of the research in early 1994, over 400 design suggestions have been accumulated. All of the design suggestions are included in the final working version of the design tool.
All of the targeted resources proved to be valuable sources of design suggestions. Table 1 reveals that the majority of suggestions came from safety design manuals and checklists. A good proportion also came directly from the researchers and research team members and through interviews with industry personnel. Safety design manuals and checklists typically
address hazards during the startup, operation, and maintenance phases of a project. This resource was particularly fertile due to the close relationship between the construction and startup phases, and the construction and maintenance phases. As a result, the design tool will also be useful for improving safety in the startup and maintenance phases.