IDMS integrity database management system best practice we will continue the previous article about IDMS integrity database management system best practice. Previously we talk about design code, inspection method involved and trending. now we will focus on Risk Based Inspection feature. IDMS integrity database management system best practice : upload Risk Based Inspection assessment One of Asset integrity Engineer job is conduct Risk based inspection for all fixed equipment. Risk Based Inspection assessment involve many job functions such as Asset Integrity engineer, Inspection specialist / API inspector, Corrosion engineer, operation folk and also IDMS Specialist. there are 3 type RBI methods i.e qualitative assessment, quantitative assessment and semi-quantitative assessment. In qualitative assessment, the SME (Subject Matter Expert) make a score of Pof (probability of failure) based on their expertise. They can say a carbon-dioxide pipeline is higher corrosive than a “high purity” crude oil pipeline. They do not need to[…]
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Risk Based Inspection – Metric
Risk based inspection Metric Risk Based Inspection is a study to develop inspection plan based on equipment risk ranking. Mathematically, Risk is defined as PoF x CoF. What is PoF ? PoF or Probability of failure is a rank that tell us about how likely a equipment will fail. CoF or Consequence of failure is a rank that tell us about how much failure impacts. In a simple way PoF, CoF and Risk are 3 terms that we used to rank all equipment in a company. Risk based inspection metric may consist of 3×3 , 4×4, 5×5 or even 6×6. For a company has a small quantity of equipment, they may choose to use 3×3 metric. But for company that have a lot of equipment -e.g. 1,000,000- with wide range of consequence, they may prefer to use 6×6 metric. This metric tell us about how detail we group[…]
Read moreMechanical Engineer creates value from Risk Based Inspection
how to get a vlue from risk based inspection ? A wise man said “if you buy a product from a manufacturer at $100 and sell it again to customer at $120, it is traditional trader. You need more than that. Successful man is selling a product at $120 even there is not manufacturer available yet.” In previous articles, we learned about processing data to provide lower inspection cost. In simple way, we can classify that activities into 3 block diagram: input, process and output. IPO diagram : Input – Process – Output Input : last inspection record, equipment data, Risk Based Inspection-RBI study, inspection cost Process : inspection planning using simple tool i.e. excel spreadsheet Output : inspection schedule, inspection budget and the most important is “lower inspection cost by 50%” Customer : his supervisor, Inspection Manager It just an example of Mechanical engineer job in oil and gas[…]
Read moreExcel for Mechanical Engineer, cost saving by Risk Based Inspection
how to use excel for Risk Based Inspection? We will figure out inspection plan using data in the previous article. First we will find optimum inspection date base on fixed interval and RBI interval using simple excel spreadsheet. Use excel function “ + ; MAX”. remark: next inspection – fixed = Last inspection date + fixed inspection interval ( 5 years) next inspection – RBI = Last inspection date + RBI inspection interval next inspection date = Maximum (optimum) value between next inspection – fixed and next – inspection RBI. We extend inspection interval using Risk Based Inspection study. Second, we will find inspection cost using excel function: Short / IF and PIVOT Table. Mechanical engineer, please be creative! Group equipment type using unique equipment number. Vessel equipment number always begin with “V” letter and Heat Exchanger equipment number always begin with “HE” letter. Do you see it? For[…]
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