Fitness-for-Service (FFS) (also referred to as Fitness-for-Purpose) is an assessment that is carried out using the best-practice industry standards. The FFS assessment evaluates the structural integrity of an asset/component to determine whether the asset/component is suitable for its intended use. The Fitness-for-Service (FFS) assessment provides a quantitative measure of structural integrity and is part of asset integrity management. The assessments are used to highlight the need for replacement or repair of assets/components.
Fitness-for-Service is important at both a low level (during screening assessments) and also at a high level. The assessment at a low level can highlight if equipment is fit for continued use when limited data is available, therefore saving both money and time repairing or replacing equipment. Higher assessment levels require more data and cost more money than lower level assessments. All levels of a Fitness-for-Service assessment are used during the/as part of the lifetime of a power plant to increase availability, reliability, efficiency and safety.
Fitness-for-Service assessments are used to assess the structural integrity and suitability of a component/asset for its intended use. This allows the process to be used to assess critical pressure components and welded structures. The process is used throughout various stages of an asset’s life, including design, fabrication and operation, to identify mitigation processes needed for the safe continued use of assets/components.
Fitness-for-Service is used within many different industry sectors, including oil and gas, power generation, chemical processing and aerospace. Examples of where TWI has carried out Fitness-for-Service assessments within these industries include:
TWI Software offers various software that assist with fitness-for-service assessments, these include:
IntegriWISE™ – This software allows the integrity of storage tanks, pipelines, pressure vessels, boilers and high temperature equipment to be assessed. It achieves this by assessing damage mechanisms and creating ‘what if’ scenarios. To find out more about IntegriWISE™ click here.
CrackWISE® - This software helps to ensure the continued safe operation of pipelines, structures and pressure equipment by helping evaluate flaws. To find out more about CrackWISE® click here.
RiskWISE – This is an integrity management software that is used on process plants, boilers and pipelines. This software is able to process large quantities of data related to risk-based inspection techniques. To find out more about RiskWISE click here.
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