E2G|The Equity Engineering Group, Inc. is internationally recognized in the refining and petrochemical industry as a leader on aging infrastructure services and support. Our engineers pioneered the advancement of FFS technologies and were the lead investigators of the international standard API 579-1/ASME FFS-1 Fitness-for-Service. The document has rapidly become the FFS standard of choice for other industries such as pulp & paper, fossil utility, food processing, and non-commercial nuclear. In addition to our involvement in the development and continuous advancement of FFS technology, E2G was the lead investigator of API 571 Damage Mechanisms Affecting Fixed Equipment in the Refining and Petrochemical Industry. Understanding the effects and potential for future damage progression is critical in completing an effective FFS evaluation.

E2G is focused on applying the appropriate level of technology to make practical decisions that impact our clients’ objectives regarding safety and economics. We offer superior client service, in part due to our continuing involvement and leadership in developing FFS technology and API/ASME standards. Our consulting services’ reputation of providing the highest level of value to clients was built on the following:

  • Providing practical and cost-sensitive solutions to challenging FFS problems
  • Utilizing advanced FFS techniques to extend equipment life
  • Optimizing inspection based on detailed remaining life evaluations
  • Designing effective temporary or permanent repairs
  • Reducing shutdown time
  • Providing quick turnarounds in emergency situations

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A Full Range of FFS Experience

E2G has evaluated all types of damage that occur in the oil and gas industry on a wide variety of equipment, including pressure vessels, process piping, transmission pipelines, hydroprocessing reactors, storage tanks, heat exchangers, furnaces (casing, tubes, and stacks), and mechanical components of specialized equipment.

The traditional use for FFS has been in a reactive mode to assist with critical run, repair, or replace decisions once flaws or damage are discovered during equipment shutdown inspections or on-stream inspections. However, FFS technology can be used proactively in order to extend equipment life and optimize inspection intervals and inspection tasks. This proactive approach is based on results from detailed remaining life evaluations that are developed through rigorous engineering evaluations which focus on the specific damage mechanisms of concern. E2G has extensive experience conducting FFS evaluations at all stages of the equipment life cycle.

Our Experience Includes the Assessment of the Following Damage Mechanisms:

  • Brittle Fracture (BF) and Minimum Pressurization Temperature (MPT) evaluations
  • General wall loss corrosion and local thin areas (LTAs), including pitting
  • Dents, gouges, and dent-gouge combinations
  • Distortion, bulges, weld misalignment, out-of-roundness, and edge settlement
  • Low temperature hydrogen damage such as laminations, blisters, Hydrogen-Induced Cracking (HIC), and Stress Oriented Hydrogen-Induced Cracking (SOHIC) damage
  • High Temperature Hydrogen Attack (HTHA)
  • Crack-like flaws (such as environmental or mechanical damage or fabrication defects), including explicit weld residual stress simulation as appropriate
  • Fire Damage Assessments
  • Thermal and mechanical fatigue, including state-of-the-art welded joint fatigue and strain-based fatigue methods
  • Hot spots
  • Creep and creep fatigue
  • Mechanical vibration of piping systems or equipment, including field data collection
  • Blast loading and other dynamic effects

In addition, E2G’s cutting-edge Buckeye Sampler™ enables sampling of materials from in-service components for metallurgical and mechanical testing. Watch the Buckeye Sampler video below:

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E2G Help Desk Services

Our Help Desk IT specialists and engineers are available for questions about all E2G products. Our goal is to facilitate upgrades and conversions, quickly answer your questions, and help you benefit from our state-of-the-art software products.


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