Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.
Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.
Validating the specifications, value and safety of your raw materials, products and assets.
Fitness for Service and Finite Elements Analysis
Regardless of the quality of a Mechanical Integrity (MI) program, degradation or damage eventually occurs in virtually every facility. When it does, personnel need to understand what has caused the damage and whether the equipment can remain in operation, be repaired, or be replaced. Intertek Asset Integrity Management (AIM) provides the remaining-useful-life service that gives you the information you need to make the right decisions.
Nondestructive examination (NDE) of equipment is a standard periodic maintenance activity used to manage today's in-service assets. Generally, the NDE itself is quite straightforward; however, problems can arise when the NDE technician discovers a significant weld or base metal flaw indication. This leads to the following questions:
Once a flaw is detected and sized, a Tolerable Flaw diagram can be used by the responsible party to determine the remaining allowable operating time. This operating time could be zero months, in which case the flaw must be repaired before restart, or it could be as long as 5 years or more.
The result? Immediate answers on the component's suitability-for-service, without having to wait for an after-the-fact engineering analysis to determine the seriousness of the flaw.
For pressurized components in power plants, chemical plants, or petrochemical plants the National Board Inspection Code is often the governing standard. This standard provides repair guideline and allows for Fitness-for-Service (FFS) approaches using ASME FFS-1/API 579.
Intertek's multidisciplinary team, with specialist knowledge in areas of fracture mechanics, fatigue, finite element analysis, materials, inspection and welding, has conducted many failure analyses in the industry, as well as hundreds of fitness-for-service analyses using the guidelines in ASME FFS-1/API 579. The information gathered in the failure analyses allows us to augment the information in ASME FFS-1/API 579 and permits us to provide the most comprehensive assessment of a component possible. Using the Fitness-for-Service approach can allow the owner of the equipment to safely extend the operability of the equipment while avoiding expensive and unnecessary repairs.
To learn more visit www.intertek.com/aim or download our FFS technical paper:
Mr. Cronin's expertise is in analysis of steady-state and transient stress, strain, and temperature fields using finite element and finite difference methods; fatigue and fracture analysis of large steam turbines, generator rotors, jet engine disks, pressure vessels, spacecraft structures, and launch vehicle platforms; risk analysis procedures for use in making run/repair/retire decisions; nondestructive examination using ultrasonic, magnetic particle, and radiographic methods; development of stress intensity factor solutions using finite element methods; and nonlinear stress and heat transfer analysis.