Addressing Dead-Legs and Corrosion Issues in a PHA

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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.

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