An Overview of API /ASME FFS Fitness-For-Service Assessment. Standard with Applications to Case. Studies. By. Mohammad M. Megahed. Professor. API /ASME FFS-1 is a standard released by API which describes FFS assessment techniques for pressure equipment used in the oil & gas industries. Introduction. API / ASME FFS-1, Fitness-For-Service, (), is an American National Standard developed and published by the.
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The role of the inspector in gathering data and evaluating that data will be discussed as will be the role of the technologist and engineer in appraising the data and employing it in engineering calculations. In 5791- Level 1 assessment, surface damage, quantified by the pitted area and pit depth, is compared to standard pit charts to determine acceptability. Subscribe to our blog Unsubscribe from our blog. Did a unit upset result in internal pitting on the bottom head of the reactor? Below is a summary of the assessment process.
If you answered yes to these questions, or if pitting corrosion due to other factors is occurring in your plant, an API FFS pitting assessment may provide an alternative to costly repairs. In addition, evaluation techniques are provided for condition assessment of equipment including resistance to brittle fracture, long-term creep damage, and fire damage. Please click on the link below to sign up for our eNewsletter if you would like to be notified about future offerings of this course.
Forside Nettbutikk Produktkatalogen Produktpresentasjon. This approach provides an entry point into the ASME or API codes refer also to Annex A wherein the pressure-containing component is reconciled or generally made equivalent to the 597-1 bases assumed for this Standard.
Article 3, API Fitness-For-Service (FFS) – Pitting Assessment | Carmagen Engineering
Bruce Ball is a professional engineer with over 35 years consulting experience in failure analysis and inspection of plant facilities and mechanical equipment. Phone please use format: It may be used on nozzles with or without a reinforcing pad.
Level 1 pitting assessments are permitted only if certain conditions are satisfied. Materials Degradation and Corrosion 16 post s. In the edition, the material aapi are no longer in a separate annex, but are instead moved to the assessment part where they are mostly referenced. Litigation Support 3 post s. Our wealth of knowledge and experience enables us to provide authoritative, practical, knowledge based answers, and to solve your problems.
Magnus Gustafsson has over 10 years experience in the design and analysis of mechanical components and 759-1 in the Petrochemical and Railway industries. Becht Engineering has extensive experience and expertise in the conduct of Fitness-For-Service. Due Diligence 6 post s. Safety 10 post s. Since it was first issued by API inthis Fitness-For-Service standard has been used worldwide as a means of evaluating whether pressure equipment was fit for continued service, and in many cases, for how long.
Machinery 19 post 57-91.
Several of the assessment methodologies are no longer shown in full, e. Sign up for eNewsletter.
Article 4, API 579-1: Fitness-For-Service (FFS) – Pitting Assessment
Pitting is defined by API as localized regions of metal loss characterized by a pit diameter on the order of the plate thickness or less.
Some of the limitations are:. Assessment techniques are included to evaluate flaws including: GML Level 2 assessments are permitted only if certain conditions are satisfied. JanuaryEarn: These are components that have a design equation that specifically relate pressure or liquid fill height, and other loads, to a required wall thickness e. This Standard has broad application since the assessment procedures are based on allowable stress methods and plastic collapse loads for non-crack-like flaws, and the Failure Assessment Diagram FAD Approach for crack-like flaws.
Another example is the previous Annex B1, which contained the procedures for demonstrating protection against various failure modes using stress analysis, which is now under Part 2 in Annex 2D. In this third installment, we will take a look at general metal loss GML in nozzles. These rules typically result in one component with a thickness that is dependent upon another component.
This course has already completed. What is required Who is responsible How is data obtained and organized Remaining strength factor Need for in-service monitoring inspection frequency Remaining Life Determination Brittle Fracture Resistance: If the depth of all the pits is less than the specified corrosion allowance, then a pitting assessment is not required. This standard has been used to avoid costly and unnecessary unplanned outages, while maintaining safe and reliable equipment.
Thursday, 30 March The Second Edition was released infollowed by the most current release of the document in June of However, flexibility is provided to the user in the form of an advanced assessment level to handle uncommon situations that may require a more detailed analysis. Details of the process, as well as the nomenclature, can be found in API Part 6. Be the first to submit a comment. Systems 2 post s. Becht Nuclear 36 post s. For example, material data needed for creep assessments – Part 10 — are now found in Annex 10B.
Some of the limitations for nozzle assessments are:. Piping 29 post s. Reliability Improvement 29 post s.