Addressing Dead-Legs and Corrosion Issues in a PHA
This case study describes a systematic approach for process hazard analyses (PHAs) and revalidations to identify and address corrosion and dead-leg concerns.
It is especially important during project (MOC) PHAs and revalidations of systems that have experienced changes to uncover potential issues. Systematically approaching revalidations can uncover dead-legs created by a previous change and areas where required blanks/blinds may be missing. This can easily occur if the project PHA did not include a specific review for dead-legs and corrosion issues.