Risk based inspection for atmospheric storage tank

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Agus Nugroho, Gunawan Dwi Haryadi, Rifky Ismail, Seon Jin Kim

2016 AIP Conference Proceedings Vol. 1725 Conference paper Cited by 9

Abstract

Corrosion is an attack that occurs on a metallic material as a result of environment's reaction.Thus, it causes atmospheric storage tank's leakage, material loss, environmental pollution, equipment failure and affects the age of process equipment then finally financial damage. Corrosion risk measurement becomesa vital part of Asset Management at the plant for operating any aging asset.This paper provides six case studies dealing with high speed diesel atmospheric storage tank parts at a power plant. A summary of the basic principles and procedures of corrosion risk analysis and RBI applicable to the Process Industries were discussed prior to the study. Semi quantitative method based onAPI 58I Base-Resource Document was employed. The risk associated with corrosion on the equipment in terms of its likelihood and its consequences were discussed. The corrosion risk analysis outcome used to formulate Risk Based Inspection (RBI) method that should be a part of the atmospheric storage tank operation at the plant. RBI gives more concern to inspection resources which are mostly on 'High Risk' and 'Medium Risk' criteria and less on 'Low Risk' shell. Risk categories of the evaluated equipment were illustrated through case study analysis outcome. © 2016 Author(s).

Affiliations

Department of Mechanical Engineering, Diponegoro University, Indonesia. Jl. Prof. Sudharto, SH., Tembalang, Semarang, 50275, Indonesia; Department of Mechanical Engineering, UniversitasNegeri Semarang, E5 Building Kampus UNNES, Sekaran, Gunungpati, Semarang, 50229, Indonesia; Department of Mechanical and Automotive Engineering, Pukyong National University, Daeyeon Campus: 599-1, Busan, South Korea