Calculate intermediate factor related to the geometry of the corroded area.
Arguments
- d
nominal outside diameter of pipe, [inch]. Type:
assert_double
.- wth
nominal wall thickness of pipe, [inch]. Type:
assert_double
.- l
measured maximum longitudinal length of the corroded area, [inch]. Type:
assert_double
.
References
ASME B31G-1991. Manual for determining the remaining strength of corroded pipelines. A supplement to ASTME B31 code for pressure piping.
Examples
library(pipenostics)
b31gafr(30, .438, 7.5)
#> [1] 1.847
# [1] 1.847 # A-factor is less than 5, so the corrosion is not critical