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The Facts and a Few Urban Legends Too Around Flow-accelerated Corrosion

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Expands on the fundamentals of flow-accelerated corrosion and the mechanisms of the various types of this debilitating and costly type of corrosion. The paper discusses system hydrodynamics, materials of construction, operating practices, as well as the impact of water chemistry.

Product Number: 51317--9165-SG
ISBN: 9165 2017 CP
Author: Luis Carvalho
Publication Date: 2017
Industry: Energy Generation
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The incidence of flow-accelerated corrosion commonly known as FAC continues unabated throughout many industries. FAC failures often catastrophic including the loss of life are not limited to gas-fired combined-cycle power plants where many have occurred especially in the past 20 years. It has also been reported extensively in other fossil fuel power plants nuclear energy units as well as the hydrocarbon and chemical processing industries. FAC is a growing and insidious type of failure despite industry efforts to mitigate it. The author an engineer who has over 20 years of first-hand experience with FAC expands on the fundamentals of the current understanding of FAC and on the mechanisms of the various forms of this debilitating and costly type of corrosion using several real-world case studies. The paper discusses many of the key variables at playsuch assystem hydrodynamics materials of construction and operating practices.Regrettably some myths surround the science of FAC with significant negative effects on mitigation efforts.The paper discreditsthese myths and provides pragmatic insights on the real root causes troubleshooting and amelioration strategies for some of the affected industries.

Key words: flow-accelerated corrosion, flow-assisted corrosion, erosion-corrosion, fluid hydrodynamics

 

The incidence of flow-accelerated corrosion commonly known as FAC continues unabated throughout many industries. FAC failures often catastrophic including the loss of life are not limited to gas-fired combined-cycle power plants where many have occurred especially in the past 20 years. It has also been reported extensively in other fossil fuel power plants nuclear energy units as well as the hydrocarbon and chemical processing industries. FAC is a growing and insidious type of failure despite industry efforts to mitigate it. The author an engineer who has over 20 years of first-hand experience with FAC expands on the fundamentals of the current understanding of FAC and on the mechanisms of the various forms of this debilitating and costly type of corrosion using several real-world case studies. The paper discusses many of the key variables at playsuch assystem hydrodynamics materials of construction and operating practices.Regrettably some myths surround the science of FAC with significant negative effects on mitigation efforts.The paper discreditsthese myths and provides pragmatic insights on the real root causes troubleshooting and amelioration strategies for some of the affected industries.

Key words: flow-accelerated corrosion, flow-assisted corrosion, erosion-corrosion, fluid hydrodynamics

 

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