5.6.3 Risk Avoidance
This technique reduces risk through the modification or
elimination of those operational requirements, processes or activities that
cause the risks. Eliminating operational requirements requires close
coordination with the users. Since this technique results in the reduction of
risk, it should generally be initiated in the development of a risk-handling
plan. It can be done in parallel with the initial operational requirements
analysis and should be supported by a cost-benefit analysis.
18.104.22.168 Procedures. Analyzing and reviewing the proposed
system in detail with the user is essential to determine the drivers for each
operational requirement. Operational requirements scrubbing involves
eliminating those that have no strong basis. This also provides the PMO and
the user with an understanding of what the real needs are and allows them to
establish accurate system requirements for the critical performance.
Operational requirements scrubbing essentially consists of developing answers
to the following questions:
- Why is the requirement needed?
- What will the requirement provide?
- How will the capability be used?
- Are the requirements specified in terms of functions and capabilities,
rather than a specific design?
Cost/requirement trade studies are used to support operational requirements
scrubbing. These trades examine each requirement and determine the cost to
achieve various levels of the requirement (e.g., different airspeeds, range,
payloads). The results are then used to determine, with the user, whether a
particular requirement level is worth the cost of achieving that level. Trade
studies are an inherent part of the systems engineering process. (See
Deskbook 2.6.1 for details on systems engineering