Errata sheet for Layer of Protection Analysis: Simplified Process Risk Assessment (2001)

Page 128, Equation 7-1 1: Term [SYMBOL FOR INITIATING EVENT FREQUENCY] should be included before x Pignition

 
Page 128, Scenario lb equation: Term [SYMBOL FOR INITIATING EVENT FREQUENCY] should be included before x Pignition 
 
Page 129, Scenario 2b second equation: the three P terms in brackets after the numerical values should be deleted 
 
Page 146, Table 8.3: Total PFD for all IPLs should be 1 x 10-4  not 1 x 10-5
 
Page 202, Table A.10: Notes state “(i.e. a total PFD of at least 1 x 10-4 must be in place for IPLs).” Change “1x10-4”  to 1x10-2”.
 
Page 225, Table B.6: Frequency of Mitigated Consequence should be changed  to “1.21 x 10-6”
 
Page 250: “Figure F. 1 shows a graph ....... for the scenario in Example F. 2”. Change Example F.2 to Example F.1.