Materials Performance

AUG 2017

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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63 NACE INTERNATIONAL: VOL. 56, NO. 8 MATERIALS PERFORMANCE AUGUST 2017 Critical Factors Affecting Corrosion Failure Preemption To carry out corrosion failure preemp- tion effectively, several critical factors also must be taken into consideration (Figure 3). Inadequate implementation of these factors will adversely affect both the pre- diction and prevention components of the corrosion failure preemption process. As a consequence, this can lead to erroneous indications of the timing, location, and mode of failure. Furthermore, any remedial action implemented may be less effective than intended. Proper Data Management To be able to more accurately predict the time of failure or the failure location, access to reliable data is required. These include, but are not necessarily limited to: • Design • Operation • Process • Wall-thickness inspection • Corrosion monitoring and fluid sampling • Intelligent pigging Such data are analyzed and processed to produce corrosion rates, fluid corrosiv- ity, and remaining life values for compo- nents. Therefore, proper data management plays an important role in producing more accurate prediction data. Adequate Communication Asset integrity management is a team exercise. Similarly, many of its components, such as corrosion failure preemption, are carried out more effectively and efficiently when there is adequate communication among the various disciplines working on the same team, which are often across dif- ferent companies or locations. For exam- ple, th e corrosion engin eer —th e most likely person to carry out the FRA process and predict the time to failure—needs to receive pertinent wall-thickness inspection data from the inspection team and corro- sion monitoring and f luid sampling data from the operations team . Precise and timely exchange and dissemination of such data markedly improves the quality and accuracy of the output (where, when, and how) produced by the integrity or corrosion engineer who is facilitating the failure pre- emption objective. Adequate Competency It has been observed that many failures occur due to shortcomings associated with the competency of those in charge of vari- ous tasks within the asset integrity man- agement team. A lack, or an inadequate mix, of education, training, experience, and super vision could lead to erroneous or ineffective remediation or repair/replace- ment actions, and then failures. Sometimes the lack of competency itself can accelerate th e occurrence of failures rath er than delaying them. Corrosion Management and Corrosion Failure Preemption A close examination of the corrosion failure preemption process reveals various overlaps and links between this concept and that of corrosion management. 2 Such overlaps and congruity between these two concepts indicate that timely and proper implementation of an asset's corro- sion management significantly facilitates the process of corrosion failure preemption. The latter is a product of the former. Once corrosion management is fully implemented across an asset or a system, a marked reduc- tion, or even the total elimination, of corro- sion failures is expected. This outcome and corrosion cost optimization are regarded as the two most significant benefits of imple- menting an asset corrosion management process. Conclusions • C o r ro si o n f a i l u re pre e m p t i o n i s based on predicting where, when, and how a failure is likely to occur, a n d th e n pre v e n ti n g th e fa i lu re before its occurrence. • T h e p r e v e n t i o n c o m p o n e n t i s achieved either by a remedial action to reduce the incumbent corrosion rate, or by a repair/replacement ac- tion if it is too late to carry out the former. • Proper data management, adequate communication , and competency are the other critical factors affecting th e c orrosion fai lure preemption process. • Proper and timely implementation of the corrosion management process significantly facilitates the process of corrosion failure preemption. Recommendations • Carry out a thorough FRA process to have a more efficient corrosion fail- ure preemption process in place. • Enhance incumbent data manage- ment and improve existing commu- n i c a t i o n a n d c o m p e t e n c i e s t o strengthen the corrosion failure pre- emption process. References 1 A. Morshed, "Corrosion Management and Corrosion Cost Optimization ," MP 56, 4 (2017): p. 61. 2 A. Morshed, "The Evolution of the Corrosion Management Concept," MP 52, 8 (2013): p. 66. ALI MORSHED is a consulting corrosion en- gineer based in London, United Kingdom, email: allok_morshed@hotmail.com. He is a corrosion engineer by education, training, and experience, and is also interested in the concept of applications of corrosion management and its influence over the overall integrity management of an asset. He is the author of the NACE International best-selling book, An Introduction of Asset Corrosion Management in the Oil and Gas Industry, with the second edition published in Fall 2016. A member of NACE, he is a regular contributor to MP on the subject of corrosion management. Morshed has also completed a new corrosion manage- ment book for other industries (i.e., non- hydrocarbon ones), which was published by NACE in July 2017. Corrosion Management and Corrosion Failure Preemption The MP Buyers Guide is an exclusive directory of manufacturers, suppliers, and consultants worldwide that provide products and services for the prevention and control of corrosion. To access the online version of the MP Buyers Guide, as well as add or edit your company's listing, please go to www.mpbuyersguide.com.

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