The following is extracted from Attachment C of Appendix 9B of Ref. [86]. This reference is an environmental assessment (EA) of a proposed 700 mile gasoline pipeline across the state of Texas. This extract illustrates the use of specific consequence determinations in a QRA. The references to Cases 1 through 4 in the text below refer to four different pipeline failure probabilities that were used in this EA [86]. These failure probability cases are described in Chapter 14 s Case Study D (we apologize for the confusing use of cases and Case Studies ). That Case Study also originates from Ref [86] and shows how the assumptions and calculations shown below were used to produce probabilities of specific damage states. Tables referenced below can be found in Case Study D and references noted can be found in Ref [86].

This extract is included in this book because it details the considerations that went into assessing various receptor vulnerabilities. These can generate ideas and concepts useful to the designer of any risk assessment methodology.