API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

RISK-BASED INSPECTION METHODOLOGY, PART 3—CONSEQUENCE OF FAILURE METHODOLOGY 3-39
AIL CONT
b − inj
is a constant AIL continuous release provided for reference fluids for Level 1 consequence
analysis for personnel injury area
AIL INST
b − cmd is a constant AIL instantaneous release provided for reference fluids for Level 1 consequence
analysis for equipment damage area
AIL INST
b − inj is a constant AIL instantaneous release provided for reference fluids for Level 1 consequence
analysis for personnel injury area
AINL−CONT
b cmd
is a constant AINL continuous release provided for reference fluids for Level 1 consequence
analysis for equipment damage area
AINL−CONT
b inj
AINL−INST
b cmd
is a constant AINL continuous release provided for reference fluids for Level 1 consequence
analysis for personnel injury area
is a constant AINL instantaneous release provided for reference fluids for Level 1 consequence
analysis for equipment damage area
AINL−INST
b inj
c
C
d
is a constant AINL instantaneous release provided for reference fluids for Level 1 consequence
analysis for personnel injury area
is a gas release constant used in HF and H2S releases for the COF 1 toxic area analysis
is the release hole coefficient of discharge, unitless
C
p
is the specific heat of the released fluid, J/kg-K (Btu/lb-°R)
CA
f
is the final consequence area, m 2 (ft 2 )
acid
CA
inj,
n
is the personnel injury consequence area for caustic and acid leaks, associated with the n th
release hole size, m 2 (ft 2 )
AIL
CA is the flammable consequence area where autoignition is likely to occur, m 2 (ft 2 )
CA is the continuous/instantaneous blended component damage flammable consequence area that
AIL
cmd , n
AIL CONT
cmd , n
is likely to autoignite, associated with the n th release hole size, m 2 (ft 2 )
CA − is the component damage flammable consequence area for continuous releases that is likely to
AIL CONT
inj,
n
autoignite, associated with the n th release hole size, m 2 (ft 2 )
CA − is the personnel injury flammable consequence area for continuous releases that is likely to
AIL INST
cmd , n
autoignite, associated with the n th release hole size, m 2 (ft 2 )
CA − is the component damage flammable consequence area for instantaneous releases that is likely
to autoignite, associated with the n th release hole size, m 2 (ft 2 )