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Fitness-for-Service and Remaining Life Assessment

Quest Integrity’s Fitness-for-Service (FFS) engineering assessment is a multi-disciplinary approach to evaluate structural components to determine if they are fit for continued service. The typical outcome of an FFS assessment is a "go/no-go” decision on continued operation. An evaluation of remaining life or inspection intervals may also be part of such an assessment, along with remediation of the degradation mechanism.

Quest Integrity has substantial FFS engineering assessment experience and has applied its approach on a wide range of assets. Our staff has been heavily involved in the development of the API 579-1/ASME FFS-1 FFS standard, and many serve on the committee that maintains this document.

In addition to our unparalleled expertise in applying FFS standards, we have in-house technology that extends well beyond what is currently available in published standards. Our LifeQuest™ solution is an example of this cutting edge technology for FFS and remaining life assessment.

We are also the leading provider of Fitness-for-Service software. Signal™ Fitness-For-Service enables end users to perform evaluations that range from routine Level 1 to highly advanced Level 3.

Remaining Life Assessment Based on Creep Testing

Quest Integrity’s advanced creep testing service provides accurate and reliable life assessment of components prone to creep damage. This service provides a higher level of accuracy in life assessment techniques based on actual creep property of components, enabling operators to determine effective inspection intervals and plans, avoid premature failure and underutilization of equipment, identify optimized operating conditions, and extend component life. Quest Integrity has extensive experience in creep testing methods such as Iso-thermal, Iso-stress creep rupture testing method and API 579 Omega creep testing.

Fitness-for-Service Engineering Assessment Flaw Type and Damage Mechanism Experience

  • Brittle fracture
  • Corrosion
  • Crack-like flaws
  • Fatigue
  • Creep
  • Stress corrosion cracking
  • Hydrogen embrittlement
  • High-temperature hydrogen attack

Fitness-for-Service Assessment Applications

  • Fired heaters
  • Reformers
  • High-energy piping
  • Pipelines
  • Boiler tubes
  • Turbines
  • Headers
  • Power lines
  • Storage tanks
  • Pressure vessels

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