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Overview of API RP 581 - Risk Based Inspection Technology
API RP 581, Risk-Based Inspection Technology, Third Edition, is a recommended practice developed and published by the American Petroleum Institute (API) to provide quantitative risk-based inspection (RBI) methods that support the minimum guidelines presented by API RP 580. Originally released in 2000 and last updated in April of 2016 (third edition), this document details the procedures and methodology of RBI, an integrated methodology that uses risk as a basis for prioritizing and managing an in-service equipment inspection program by analyzing both the likelihood and the consequences of equipment failure.
Risk-based inspection (RBI) is a methodology that involves quantitative assessment of the probability of failure (PoF) and the consequence of failure (CoF) associated with each equipment item in a particular process unit. A properly-implemented RBI program categorizes individual pieces of equipment by their risks, prioritizes inspection efforts, and provides guidance for risk mitigation efforts, such as changes in materials of construction, the addition of linings, changes in operating conditions, etc.
API RP 581 was based on the knowledge and experience of several global practitioners of RBI with extensive experience in its implementation. According to API 581, an RBI program has four major goals:
- Identify and measure risk for all covered equipment.
- Impart an accurate understanding of risks and risk drivers.
- Enable effective risk management.
- Reduce risks associated with operating processing facilities.
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Related Topics
API 560 - Fired Heaters for General Refinery Service API 620 - Design and Construction of Large, Welded, Low-Pressure Storage Tanks API 650 - Welded Tanks for Oil Storage API 660 - Shell-and-Tube Heat Exchangers API 661 - Petroleum, Petrochemical, and Natural Gas Industries Air-Cooled Heat Exchangers API RP 1173 - Pipeline Safety Management Systems API RP 1176 - Assessment and Management of Cracking in Pipelines API RP 538 - Industrial Fired Boilers for General Refinery and Petrochemical Service API RP 571 - Damage Mechanisms Affecting Fixed Equipment in the Refining Industry API RP 576 - Inspection of Pressure-Relieving Devices API RP 579 - Fitness-For-Service (FFS) API RP 580 - Risk Based Inspection (RBI) API RP 75 - Developing a Safety and Environmental Management Program for Offshore Operations API RP 939-C - Guidelines for Avoiding Sulfidation (Sulfidic) Corrosion Failures in Oil Refineries API RP 941 - Steels for Hydrogen Service at Elevated Temperatures and Pressures International Organization for Standardization (ISO) PAS 55Relevant Links
Articles about API RP 581 - Risk Based Inspection Technology
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March/April 2018 Inspectioneering JournalBy Ibrahim Kodssi at ADNOC LNG, and Houssam Sabry at ADNOC LNG
Implementing RBI for process piping can be a very tedious and lengthy exercise, especially for major process plants with thousands of feet of interconnected piping. This article shares the experience of ADNOC LNG following a structured RBI approach for piping groups.
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March/April 2017 Inspectioneering JournalBy Fernando Vicente at ABB, and Laza Krstin at ABB
Myths, challenges, and good practices related to process piping integrity management activities that help inspection and maintenance managers make the right decisions to develop cost-effective piping inspection plans without compromising the asset’s reliability or performance.
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A New Risk Assessment Tool for Determining the Likelihood of Chloride Promoted Stress Corrosion Cracking in Austenitic Stainless SteelsJanuary/February 2017 Inspectioneering Journal
Historically, if asked when or how likely an austenitic series stainless steel component is to crack, corrosion engineers usually answered “very” or “maybe” or, later, “I didn’t see that coming.” With the introduction of API’s formal risk assessment methodology, that situation has changed over the past 20 years.
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November/December 2016 Inspectioneering JournalBy Greg Alvarado at Inspectioneering Journal
Human factors, inspection effectiveness, and RBI all play an important role in running an effective asset management program. This article discusses how each is applicable to inspecting equipment in processing facilities.
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November/December 2016 Inspectioneering JournalBy Lynne Kaley at Trinity Bridge LLC / Trinity Bridge Digital
This paper provides the background for the technology behind the Third Edition thinning model as well as step-by-step worked examples demonstrating the methodology for thinning in this new edition of API RP 581.
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Partner Content
Offshore platforms are exposed to some of the roughest conditions on earth and require regular attention to ensure they are structurally sound and safe for continued operation. With so many components and major joints at elevated locations, it is clear why a well-trained rope access technician can be an invaluable resource for offshore operators.
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BlogDecember 29, 2016 By John Reynolds at Intertek
The Fall API Standards Meeting was incredibly productive and addressed, among other issues, the API Inspection Summit, balloting for the 11th edition of API 510, and improvements to the inspection section of each damage mechanism in API RP 571.
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BlogSeptember 12, 2016 By Lynne Kaley at Trinity Bridge LLC / Trinity Bridge Digital
Experienced material specialists are in short supply and high demand these days. So if you are lucky enough to have one at your disposal, how can you squeeze the most out of that opportunity?
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BlogJuly 15, 2016 By Greg Alvarado at Inspectioneering Journal
Anyone who knows me knows that Risk Based Inspection (RBI) and Risk Management are true passions of mine. I have dedicated much of my career to studying them, understanding their intricacies, and witnessing the benefits of their successful implementation. This article briefly discusses the history of RBI and provides a short, yet persuasive justification for investing in establishing an effective RBI program.
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May/June 2016 Inspectioneering JournalBy John Reynolds at Intertek
This brief article contains updates and highlights related to the Subcommittee on Inspection (SCI) at the 2016 API Spring Refining Equipment and Standards Meeting.
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BlogMay 16, 2016 By Valerie Magyari at The Equity Engineering Group, Inc.
When was the last time you reviewed your Risk-Based Inspection (RBI) methodology? Are you using calculation procedures for probability of failure, consequence of failure, and risk that haven’t had their basis reviewed in years?
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BlogJanuary 4, 2016 By John Reynolds at Intertek
This article provides a summary of the Subcommittee on Inspection (SCI) discussions that occurred at the Fall 2015 API Refining Standards Meeting, including the Inspection Summit Planning Committee and the API ICP Task Group.
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July/August 2015 Inspectioneering JournalBy Greg Alvarado at Inspectioneering Journal
Asset managers need to know when repairs and replacement are required for many reasons, including safe operation, accurate budgeting, replacement planning, and on-going reliability. When predicting design life based on a simple, linear corrosion rate versus remaining thickness, metallurgical degradation, or crack propagation rates are often not accurate or realistic. Even if the models are good, things change.
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November/December 2014 Inspectioneering JournalBy Alphonse W. Hegger Jr., P.E. at Stress Engineering Services
Today, more than ever, refinery operators are focused on maintaining safe operations for their employees and extending the life cycle of valuable operating equipment to optimize efficiencies and avoid expensive unforeseen shutdowns. When process unit corrosion assessments, RBI methodologies, and IOWs are properly integrated into refining operations, the result is improved safety and longer run times.
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BlogNovember 17, 2014 By John Reynolds at Intertek
One of the most significant advancements to come along in the fixed equipment mechanical integrity (FEMI) business in the past two decades is the application of risk-based inspection (RBI) for inspection prioritization, planning, and scheduling. The most important standard for RBI in the petroleum and petrochemical industry is API RP 580.
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May/June 2014 Inspectioneering JournalBy Luciano Narcisi at GIE
As an RBI consultant, I frequently get involved in discussions spawned from a misunderstanding of the relation between Risk Based Inspection (RBI) approaches and Fitness for Service (FFS) assessments. Questions like: If thickness is below the minimum required by design, why does the risk stay so low?
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BlogApril 21, 2014 By Greg Alvarado at Inspectioneering Journal
A paper was presented at the 68th Conference of the Italian Thermal Machines Engineering Association entitled Updated Failure Rates and Risk Management in the Process Industries. It was presented in October 2013 by INAIL, an Italian insurance association. The presentation included a thorough analysis of generic failure frequencies used in various American, European, and other sources dating back to 1970.
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BlogSeptember 9, 2013 By Greg Alvarado at Inspectioneering Journal
We’ve been discussing Scalable Accuracy and its use related to Lifecycle Management technologies available to owner/operators. The last few topics have included Risk Based Inspection, Fitness for Service using Accuracy, the approach for Equipment Lifecycle Management and, to lay the foundation for proper thinking, making the case for Scalable Accuracy.
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BlogSeptember 3, 2013 By Greg Alvarado at Inspectioneering Journal
We’ve been discussing Scalable Accuracy and its use related to Lifecycle Management technologies available to owner/operators. The last few topics have included Fitness for Service using Scalable Accuracy, the approach for Equipment Lifecycle Management and, to lay the foundation for proper thinking, making the case for Scalable Accuracy. In a continuation on the topic, this week’s blog will cover Risk-Based Inspection (RBI).
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BlogJune 3, 2013 By Greg Alvarado at Inspectioneering Journal
This is the third of four blogs in a series about Risk Based Inspection (RBI). You can read the previous blogs on a history and reasons for RBI and on starting to define risk. This post deals with the second half of the equation used to define risk...
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BlogMay 20, 2013 By Greg Alvarado at Inspectioneering Journal
Anyone who knows me knows that Risk Based Inspection (RBI), and Risk Management, are a passion of mine, so my next few posts will feature these topics. These are not all-inclusive, but Inspectioneering.com has dozens of articles and you can join our LinkedIn Group for more.
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November/December 2012 Inspectioneering JournalBy Ryan Corn at Marathon Petroleum Company LP, and Matthew K. Caserta, PE at BASF
As refiners continue operating aging infrastructure, safe operation and equipment availability continue to be key components of a sustainable operation. When considering optimizing inspection projects, more and more refiners are making Risk-Based Inspection (RBI) an integral part of their plan processes. When applied properly, RBI can focus inspection efforts using risk as a basis for prioritizing and managing an in-service inspection program.
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January/February 2000 Inspectioneering JournalBy Gene R. Meyer at The Dow Chemical Company
Part 1 provided a review of RBI for pressure vessels and piping and an introduction to application of RBI to rotating equipment and the differences between approaching the two different types of equipment. As promised, Part 2 will delve more deeply into the details of rotating equipment RBI analysis, highlighting additional differences between this and fixed equipment analysis and cover: - RBI for Rotating Mechanical Equipment: Likelihood - Qualitative Risk Assignment - Forming the Risk Reduction Plan - Moving from RBI to Risk-CM
Companies
Versa Integrity Group, Inc. is a full service inspection, maintenance, and engineering company serving the oil refining, chemical processing, and offshore industries. Versa possesses over 70 years of NDE inspection, engineering and rope access experience and provides its customers access to a total of more than 400 engineers, API inspectors, rope access climbers and NDE technicians. Like many companies, Versa has the tools to get the job done; what separates Versa from the rest of the pack is their commitment to professionalism, integrity, and above all else, customer service.
Versa Integrity Group, Inc. is a full service inspection, maintenance, and engineering company serving the oil refining, chemical processing, and offshore industries. Versa possesses over 70 years of NDE inspection, engineering and rope access experience and provides its customers access to a total of more than 400 engineers, API inspectors, rope access climbers and NDE technicians. Like many companies, Versa has the tools to get the job done; what separates Versa from the rest of the pack is their commitment to professionalism, integrity, and above all else, customer service.
PK Technology is a full-service inspection contractor, as well as, an in-house software development company specializing in the Oil and Gas industry. PK Technology is the creator of intelliSPEC, the worlds first Digital Data Management System (DDMS) which is a robust and intelligent solution designed to digitize, analyze and realize all vital data.
PK Technology is a full-service inspection contractor, as well as, an in-house software development company specializing in the Oil and Gas industry. PK Technology is the creator of intelliSPEC, the worlds first Digital Data Management System (DDMS) which is a robust and intelligent solution designed to digitize, analyze and realize all vital data.
Pinnacle Advanced Reliability Technologies (PinnacleART) is a leader in building, implementing and maintaining comprehensive reliability programs for facilities in the oil and gas, chemical, mining, pharmaceutical, wastewater and electric power industries, to name a few. Our team consists of talented experts and engineers, who offer the highest degree of service and uncompromised reliability for every one of our projects. PinnacleART’s specialists are dedicated to delivering optimal outcomes for our clients, which results in reducing risk, ensuring compliance, optimizing costs and improving safety.
Pinnacle Advanced Reliability Technologies (PinnacleART) is a leader in building, implementing and maintaining comprehensive reliability programs for facilities in the oil and gas, chemical, mining, pharmaceutical, wastewater and electric power industries, to name a few. Our team consists of talented experts and engineers, who offer the highest degree of service and uncompromised reliability for every one of our projects. PinnacleART’s specialists are dedicated to delivering optimal outcomes for our clients, which results in reducing risk, ensuring compliance, optimizing costs and improving safety.
Sentinel Integrity Solutions is a full service inspection company, providing a full suite of inspection support to service the Petroleum (upstream, midstream and downstream operations), Chemical, Power and Pipeline Industries. We are respected by our clients for the unsurpassed reliability, dedication and professionalism exhibited by our personnel and the customer service and responsiveness exhibited by our Management Team.
Sentinel Integrity Solutions is a full service inspection company, providing a full suite of inspection support to service the Petroleum (upstream, midstream and downstream operations), Chemical, Power and Pipeline Industries. We are respected by our clients for the unsurpassed reliability, dedication and professionalism exhibited by our personnel and the customer service and responsiveness exhibited by our Management Team.
Quest Integrity Group is a global leader in the development and delivery of asset integrity management and asset reliability solutions for our clients in the refining and chemical, pipeline, syngas and power industries. Our services include furnace tube inspection for the refining and chemical industries, in-line inspection for the pipeline industry, steam reformer tube inspection for the syngas industry, as well as fitness-for-service assessment, remaining life assessment, structural integrity, failure analysis and materials consulting for various industries including the power industry. We specialize in condition assessment for fired heater coils, unpiggable pipelines, steam reformer tubes, storage tanks, gas turbines and other assets.
Quest Integrity Group is a global leader in the development and delivery of asset integrity management and asset reliability solutions for our clients in the refining and chemical, pipeline, syngas and power industries. Our services include furnace tube inspection for the refining and chemical industries, in-line inspection for the pipeline industry, steam reformer tube inspection for the syngas industry, as well as fitness-for-service assessment, remaining life assessment, structural integrity, failure analysis and materials consulting for various industries including the power industry. We specialize in condition assessment for fired heater coils, unpiggable pipelines, steam reformer tubes, storage tanks, gas turbines and other assets.
Videos related to API RP 581 - Risk Based Inspection Technology
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Published on April 24, 2017Greg Alvarado explains the inspection effectiveness tables found in API RP 581, the importance of them, and how they should be used.
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Published on March 24, 2017Greg Alvarado discusses the concept of "risk in square feet per year", a powerful metric found in the API RP 581 Risk Based Inspection methodology. Understanding metrics such as this one will allow you to begin trending your risks, identifying best practices, and feel comfortable with the decisions you are making in your facility or corporation.
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Published on February 17, 2017Greg Alvarado explains the concept of RBI risk thresholds: "How much confidence do I need to have in what I believe to be the true damage state of the equipment?"
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June 11 - 13 2018Location: Houston, Texas, United States
Hosted By: NACE
Dates: June 11, 2018 - June 13, 2018
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November 13 - 14 2018Location: Houston, Texas, United States
Hosted By: KCI World
Dates: November 13, 2018 - November 14, 2018
Conferences Exhibitions & Trade Shows -
January 28 - 31 2019Location: Galveston, Texas, United States
Hosted By: American Petroleum Institute
Dates: January 28, 2019 - January 31, 2019
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News related to API RP 581 - Risk Based Inspection Technology
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NewsPRNewswire, September 6, 2016
MTech, Trinity Bridge Digital's new software app, uses patent-pending technology to put industry codes, calculations and expert advice into a smart tool for IOS and Android devices, enabling users to evaluate potential causes of unexpected damage and streamline communications with materials specialists.
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