Case Study

Optimize Inspection Plans Through Remaining Life Assessment (PSA Vessel)

Asset Mechanical Integrity & Life Cycle Management

Optimize Inspection Plans Through Remaining Life Assessment (PSA Vessel)

Problem

Risk-based inspection (RBI) programs do not adequately address fatigue and an owner-operator wishes to establish a remaining life and optimize an inspection plan for a pressure swing adsorption (PSA) vessel which is exposed to cyclic loading conditions.

Solution

Perform an API 579-1/ASME FFS-1 (API 579) Part 14 fatigue assessment to establish the fatigue life for the equipment and perform an API 579 Part 9 crack-growth assessment to estimate the number of cycles required to propagate a postulated flaw to grow to reach a critical size.

Value

Establish the equipment remaining life.
Minimize costs by focusing the inspection scope on the critical locations and establish a technically justifiable inspection interval based on the assessment results.
Identify any design improvements or modifications to extend the equipment life.

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