Calculate failure pressure of the corroded pipe according to Shell92 code.
This code should be applied only to
single cross section of the pipeline containing a longitudinally oriented, flat bottom surface defect of the corrosion/erosion type;
defects which depth is less than 85 % of pipe wall thickness.
The estimation is valid for single isolated metal loss defects of the corrosion/erosion type and when only internal pressure loading is considered.
As in the case of dnvpf
, the defect is approximated by a
rectangular form.
shell92pf(d, wth, uts, depth, l)
nominal outside diameter of the pipe, [mm].
Type: assert_double
.
nominal wall thickness of the pipe, [mm].
Type: assert_double
.
ultimate tensile strength (UTS) or
specified minimum tensile strength (SMTS) as a
characteristic of steel strength, [MPa].
Type: assert_double
.
measured maximum depth of the corroded area, [mm].
Type: assert_double
.
measured maximum longitudinal length of corroded area, [mm].
Type: assert_double
.
Estimated failure pressure of the corroded pipe, [MPa].
Type: assert_double
.
Numeric NA
s may appear in case prescribed conditions of
use are offended.
Timashev and A. Bushinskaya, Diagnostics and Reliability of Pipeline Systems, Topics in Safety, Risk, Reliability and Quality 30, DOI 10.1007/978-3-319-25307-7