Making decisions about risks intrinsic to process safety design. Traditionally, to create a core design for a new process, engineers examine how the system could break down, determine the impact of system failures, and estimate their likelihood. Evaluating these issues produces a continuous stream of risk-related design decisions. All too often, however, these decisions have been based on perceptions, not measurements, of risk.
The result can be an unsystematic and incomplete design process, leading to inadequate, overly costly, or incompatible risk-reduction solutions. Moreover, when the process for determining the design basis lacks consistency, it is difficult to know whether the same risk-management philosophy supports all of a company's risk decisions.
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