Greg Garic: About the Author
Managing Principal, Stress Engineering Services, Inc.
Mr. Garic has over 35 years of experience in pressure systems engineering, particularly in the fitness-for-service assessment of fixed equipment in chemical plants and refineries. He is highly experienced in stress analysis, fracture mechanics, finite element analysis, creep and high temperature material behavior. His practice routinely involves evaluation and troubleshooting of a wide range of fixed equipment problems such as corrosion, crack-like flaws, hot spots, creep, deformation, and many other issues.
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Published Articles
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FFS Forum: Creep in Heater Tubes and Other Components – Part II: Strategies for Evaluating & Managing Remaining Life
July/August 2019 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.This is the second of a two-part column on “Creep.” This second part discusses the approach to creep assessment in plant equipment.
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May/June 2019 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.
This is the first of a two-part column on “Creep”. It presents an engineering overview of the phenomena, answers the question: “What is Creep?”, and provides readers with foundational knowledge for evaluating and managing remaining equipment life.
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Fitness-for-Service Forum: Minimum Pressurization Temperature (MPT) Curves: Why and How they are Going to Change
March/April 2019 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.
Brittle fracture and material toughness issues are important concerns in equipment design and FFS. These issues increase when temporary start-up and shutdown conditions require more detailed assessments than provided for in vessel and piping codes.
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January/February 2019 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.
The distinction between primary and secondary loads is certainly important in analysis of pressure systems. But this distinction is also important for plant operations and reliability engineers to keep in mind when dealing with day-to-day problems.
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November/December 2018 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.
In this edition of the FFS Forum, Greg addresses some issues associated with inspection of vessels that have been in service for a number of decades, and offers some tips for reliability and inspection to follow when inspecting these older vessels.
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September/October 2018 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.
In this column, I touch on what I see as an underused FFS technique for corrosion assessment: point assessment of corrosion – a technique that does NOT require a thickness grid. The reason I find this technique useful is largely because it’s so easy and cheap to implement.
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July/August 2018 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.API 579-1 is a complex document covering several different types of equipment that may contain flaws or damage. Due to its complexity, this article condenses it into six things you need to know.
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May/June 2013 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.Predicting the remaining life of components operating in the creep regime is one of the trickiest problems encountered in the fitness-for-service (FFS) world.
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March/April 2013 Inspectioneering JournalBy Greg Garic at Stress Engineering Services, Inc.If an operator finds cracking in a furnace waste heat boiler, excessive thinning in an absorption tower, or severe bulging in a converter, FFS assessments—not standard code analyses—are needed to evaluate the unit’s mechanical integrity. FFS assessments, according to the American Petroleum Institute (API), are “quantitative engineering evaluations that are performed to demonstrate the structural integrity of an in-service component containing a flaw or damage.”
