STRUCTURAL INTEGRITY ASSESSMENT OF PRESSURE VESSELS USED IN PROCESS INDUSTRY - RISK BASED APPROACH
Abstract
Risk based approach to assess structural integrity of pressure vessel in process industry is presented, taking into account EU PED 2014/68 and API 581, and using basic fracture mechanics parameters. Failure Assessment Diagram (FAD) is applied to assess likelihood of failure of two spherical storage tanks, one for vinyl chloride monomer (VCM), the other one for ammonia. Using also an estimation of consequence, the position of operating points are determined in a risk matrix, constructed as 5x5 sequences for both likelihood and consequence. In this way managers are supplied with all data needed to make decisions using risk as defined by engineers.
Keywords: Structural integrity, Pressure vessels, Process industry, Risk based approach
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