... mechanics approach, C*. The results of the test program and modeling efforts are described in detail. fitness-for-service mechanical properties low alloy carbon steel hydrogen high temperature hydrogen attack creep C* Proceedings of the ASME 2022 Pressure Vessels & Piping Conference PVP2022...

... in more aggressive environments, such as NACE A or NACE B solutions. Additionally, most of the work was conducted on more modern steels rather than service aged of vintage steel. The lack of available data inhibits the ability to perform fitness for service (FFS) assessments without using overly...

..., throughout the long term effort of cross industry task team led by authors supported by API579-1/ASME Joint Committee on Fitness-For-Service members, the conflict has been solved in the local committee. Effective from April 1 st , 2022, Oil and Chemical industry in Japan got a formal approval from...

... overly conservative and may lead to unrealistic integrity assessments of refinery vessels by applying API 579 Fitness for Service (FFS) assessments. Following the 1984 incident, most of the research carried out into sour water environments was targeted to material susceptibility and effects of sour...

... Programs will be summarized with typical management oversight actions described for effective implementation. covered piping systems CPS condition assessment operation & maintenance creep fatigue corrosion-fatigue Gr. 91 thermal quench corrosion FAC E/C fitness-for-service remaining...

... Abstract New non-destructive testing (NDT) inspection technology, quantification of damage, and tensile testing, has enabled the assessment of conservatism associated with the hydrogen induced cracking (HIC) damage parameter (DH) currently used in API 579 – 1/ASME Fitness-For-Service (FFS) Part...

... Abstract A methodology of fitness-for-service evaluation (FFSE) for explosive containment vessels (ECVs) is introduced that utilizes change-in-thickness measurements pre- and post-test to determine the propensity of the structure to ratchet or to shake down. The method focuses on ductile...

... Abstract Wind actions are important to consider when performing fitness for service assessment on storage tanks with damage. Tank design codes typically have rules where a design wind velocity is used to determine required dimensions and spacing of wind girders, and a uniform wind pressure...

... scans are used to refine a finite element model of the stack. Using elastic-plastic nonlinear “pushover” analyses based on API 579 – 1 Level 3 fitness-for-service methodology and FEMA 356 rehabilitation guidelines, a performance-based methodology resulting in a “watch circle” approach for lateral...

... Abstract This paper explores the application of the required loads while performing fitness-for-service (FFS) assessments on an in-service storage tank. Specifically, API 579 – 1, Level 3 FFS assessments involving finite element analyses are studied. In the authors’ experience, due...

.... With a heightened understanding of the asset’s degradation pattern, the risk to the asset is reassessed continuously until it has been reduced to an acceptable level as defined by the stake holders. elbow metal loss corrosion fitness-for-service API 579 asset integrity cloud computing condition...

... Abstract During inspection of a heating coil in the convection section of a steam reformer, significant thickness loss due to external corrosion was discovered in a large number of tubes. In order to optimize the scope of repairs and ensure further safe operation, a level 3 fitness-for-service...

... Abstract Significant inconsistencies and inadequacies exist in the current brittle fracture screening procedures in the 2016 edition of API 579-1/ASME FFS-1, Fitness-For-Service (API 579). Results from an evaluation completed using the current published guidance could prove unsafe in some...

... Abstract Flaw assessment according to Fitness-For-Service (FFS) codes is usually based on equations describing the impact of a single flaw in piping or pressure vessels components. However, when multiple flaws are detected, combination rules are to be taken into account to evaluate whether...

... critical creep damage weldments for nondestructive examinations. high energy piping asset integrity management fitness-for-service Grade 11 Grade 22 Grade 91 ASSET INTEGRITY MANAGEMENT OF HIGH PRESSURE PIPING SYSTEMS SUBJECT TO CREEP Marvin J. Cohn, P.E. Intertek AIM 601 W. California Ave...

... Fitness-For-Service (FFS) assessment using Finite Element Analysis (FEA) has been a problem in deciding yes-no which vary from evaluator to evaluator. The difference in decision making is caused by the degree of freedom in modeling a FEA model. In this study, burst pressures of pipes with local...