Melanie Sarzynski, Sr. Associate, Wiss, Janney, Elstner Associates Inc.
Fitness for Service (FFS) Evaluation for General and Local Corrosion
Process conditions can often lead to metal loss, either through corrosion or other damage mechanisms, in downstream pressure equipment and piping. Fitness-for-service (FFS) evaluations are often used to evaluate the local thin areas (LTA) and determine if the equipment has sufficient remaining strength to continue operating safely. Guidance provided in API 579-1 / ASME FFS-1, Fitness For Service, requires a Level 3 procedure in cases where complex geometry, unique loading, or interactions with structural discontinuities exist. A case study will be presented where a Level 3 FFS evaluation was used to establish the mechanical integrity of hydrocarbon processing equipment with localized corrosion. Discussion of best practices and options for incorporating inspection data into the finite element analysis will be discussed in the context of the example assessment.
Melanie leads a wide variety of engineering design and development projects in both upstream and downstream Oil and Gas segments. She has extensive experience in solid mechanics analyses including evaluation of various failure modes to support design and fitness for service (FFS) assessments. Her specialization in advanced finite element analysis, fatigue evaluation, and fracture mechanics assessment has led to frequent consulting on the design and analysis of a variety of components, design and certification of pressure vessels for high pressure applications, and strength and fatigue verification of high pressure high temperature (HPHT) oil field equipment.
She is a licensed professional engineer, and holds a bachelor of science, master of science, and doctorate all in mechanical engineering from Texas A&M University. To register: www.nace-houston.org