CAREER OPTIONS IN CORROSION The first time I studied corrosion was in 2009. The last 14 years have taught me one important thing - The path of a career in corrosion is not as straightforward as we are led to believe. Whether we are starting as a student of corrosion, or are entering the field after working as a non-corrosion person, there is always some career pathway that we are not aware of. There are research projects, certifications , audits, inspections , etc. EveryEng gave me the opportunity to share my learnings about the possible options in the field of corrosion . If you are someone who is starting or wants to switch to/between corrosion and its related fields, here is a short presentation for you! https://www.everyeng.com/mentor/course/view/3559864f 😀 Happy learning! 😀

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 Cathodic protection quiz - 4 Loading… Done? Click here for the  next quiz ! Check out the cathodic protection info  here ! https://corrospective.com/ 😀Happy learning! 😀

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 Electrochemical testing - 3 - Ammeter Poll Question WITH Answers: Description: Tafel polarization is a potentiodynamic test, where the potential is changed at a certain mV/time rate. The changes in the current flow occurring due to the potential change are measured using the ammeter. The ammeter is connected between the working electrode and the counter electrode. It is NOT connected to the reference electrode in any way . Check out the video for a detailed explanation Check out the previous parts here - PART 1 PART 2 For concise and focusSed courses, check out the website below! https://corrospective.com

How to prepare a corrosion loop? To prepare a corrosion loop, the person in charge will look at the overall picture and answer the following questions - 1. What is the process? 2. What are the components? 3. What are the materials for each component? 4. What are the common features among them? 5. Where does the commonality end? -  This is important as that will mark the beginning of a new corrosion loop. 6. Can I use the same inspection procedure for all of them? 7. Do they corrode/get damaged in the same manner due to the same reasons? WATCH THE VIDEO FOR A DETAILED EXPLANATION -       Read part 1 here! https://corrospective.com/ 😀Happy learning! 😀

Corrosion loop is used to simplify inspection procedures in refining processes. Corrosion loop is defined as a group of components with common materials, processes, and operating parameters.  Source: Rachman, A. and Ratnayake, R.M.C. (2020), "Corrosion loop development of oil and gas piping system based on machine learning and group technology method", Journal of Quality in Maintenance Engineering, Vol. 26 No. 3, pp. 349-368. https://doi.org/10.1108/JQME-07-2018-0058 It is needed when the scenario has - 1. Complex process 2. Several variables such a materials of construction, process parameters, functions 3. Multiple damage mechanisms WATCH THE VIDEO FOR A DETAILED EXPLANATION - Click here for part 2 ! https://corrospective.com/ 😀Happy learning! 😀

Risk Based Inspection API 580 - API 581 RBI is an often-used word in inspection.  RBI stands for Risk Based Inspection.  RBI tries to answer the following questions - 1. Which part should I expect first?  2. Which part is the most critical? 3. How should I start inspecting it first? 4. Where is the highest risk of failure?  5. Where is the order of risk? PoF is Probability of Failure . This is answered by the following questions - 1. How likely is the failure to occur? 2. How frequently will the failure occur? 3. Is there an approximate time to failure or the number of failures per time? CoF is Consequence of failure Consequence defines how dangerous the failure will be to the resources around it. This implies the following questions - 1. What kind of failure will it be? 2. Will it damage the components? 3. Will it be harmful to human life? 4. Will it affect/contaminate the environment? The risk is calculated as follows - Risk =  PoF x CoF The number designated ...

  !! Can bacteria get adapted to biocides so that every now and then it must be changed? !!    Are non-metals (particularly, composite and plastics) immune to MIC? !!   What is the likely MIC mechanism in soil environments ? Why should I ATTEND?   Microbiologically influenced corrosion (MIC) is a unique type of corrosion with the microbes being the reason for the corrosion to occur, rather than a traditional corrosion cell. MIC is a known issue in many strategic industries such as, but not limited to pipelines, refineries, powerplants, and even PV solar panels. However, MIC is still a significant source of confusion. Hence, it is crucial to get hands-on skills and knowledge to define and cure it more effectively through more realistic prevention/mitigation integrity strategies based on general corrosion technology. What will I learn? “Six important myths currently accepted and used by industry” Electrochemistry in corrosion Relevance of electrochemistry to...

 Above ground storage tanks - PART 2 9.      Splash plate corrosion at welds atmospheric corrosion coating damage, if applicable pitting due to chloride salt deposition in marine environment 10.      Spiral staircase corrosion at welds of individual bars and critical joints to the tank coating damage and delamination cracks near welds uniform corrosion at exposed surface near delamination galvanic corrosion near weld/staircase/tank interface due to dissimilar alloys 11.      Manometer corrosion of screws, nuts, and bolts used for attachment possible moisture penetration in case of cracks due to improper handling 12.      Manhole Internal corrosion due to water either as a moisture or as storage product External coating damage due to moisture penetration, dust, rainfall, UV radiation Coating damage at fixtures and edges galvanic corrosion at nuts and bolts due to dissimilar alloys atmospheric corrosion at area where coating...

 Above ground storage tanks 1. Inner walls Coating degradation Corrosion due to water/dissolved oxygen insufficient/damaged cathodic protection system dissolved sacrificial anodes 2. Outer walls/roof Atmospheric corrosion coating degradation due to moisture + UV radiation + temperature Erosion and wear due to wind and dust particles biological growth at the bottom areas near soil soil corrosion near the bottom 3. Pipes Atmospheric corrosion Coating degradation mechanical failure internal corrosion due to water/dissolved oxygen crevice corrosion in areas facing away from atmosphere corrosion at welds and joints microbial corrosion at 6 o' clock positions erosion corrosion at bends 4. Railing Coating degradation Wrong coating selection based on pure aesthetics coating damage at joints and bends corrosion at welds in the railing crevice corrosion at fixtures pitting corrosion 5. Breather valve uniform corrosion/pitting depending on whether it is made up of carbon steel/stainless steel...

  concept Isocorrosion chart Use Estimate corrosion rates for an alloy Select an alloy for a particular application with specific parameters Definition A plot of temperature versus electrolyte concentration, with lines depicting combination where similar corrosion rates are found example how to use it? An application needs a temperature and concentration as depicted by point 1 in the image above. We can plot it on the isocorrosion chart for that alloy and estimate the corrosion rate. The design of the component and corrosion allowance can be decided accordingly. A method to determine the suitability of the alloy for an application and electrolyte-temperature combination. Video below for practical demo of the use of the chart! Dive Deeper: Tips to begin experiments Do you like to solve quizzes ? https://corrospective.com 😀 Happy learning! 😀

Name of technique Cathodic protection Use Prevent corrosion Complement protection given by coatings Definition A technique where an ionic current towards the structure from the electrolyte is used to counter the corrosion current flowing out of the structure. CP criteria CP potential of -850 mV vs. CSE An instant off potential of at least -850 mV vs CSE A minimum 100 mV polarization post instant off CP measurement techniques Soil resistivity CIPS DCVG Line current Factors affecting CP requirements pH velocity ionic type ionic concentration temperature Issues with CP Stray current corrosion Insufficient CP potential Insufficient CP current Electrical shorting I will discuss all these with examples in this major course, where you can prepare for the basics for your certification course! Check out the introductory video for the brand new course and click on the link to access! https://corrospective.com/courses/basics-of-cathodic-protection-cp-in-oil-and-gas-industry Practice your CP knowl...

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All of us corrosion people head out of the house to work on coatings. And yet, we leave so many types of coatings behind in our house. The most commonly seen commodity is an electric box with switches. Usually they are coated.  This is an example of such an electric box. It shows blisters formed in the white coating. Such blistering occurs when water penetrates the pores in the coating.  Usually such parts do not come under the 'critical' category. Hence, the coatings are not very thick. Moreover, there is no coating inspector involved during the application. As a result, they are prone to early degradation. However, their position plays an important role in determining this time frame. Those boxes present outside the hose are exposed to the heat and cold. Usually they will be in a shaded area. So, they may not face the rain directly. Some boxes are inside the house in rooms. Those face the least coating damage. The image above is from an electric box in a bathroom...

Practice, practice, practice... and you shall gain the certificate! So here goes a new series, where I will post quizzes on various corrosion and coating topics. This is for anyone who likes quizzes, and ESPECIALLY for those attempting exams! So here goes the first one!  Subscribe to this blog for updates!  Loading…

I am someone who loves to study. This may sound 'nerdy'. In fact, someone called me that once. I was almost 22 and even then I was OFFENDED. Hah! This is something so many of us have struggled with. In fact, just to not be a 'nerd', there are people who have simply stopped studying as much as they used to. After all 'OMG, you study so much!' is not really 'cool' after a certain age. Not anymore! I have learned that everyone is 'nerdy' in their own way, even those who pride themselves of being 'laid back' and proceed to call others 'nerds'.  So, here's to you, the sports lover. YES, I am looking at you. If you can mouth off the statistics for your favourite team, you are a nerd, only a sports one. In fact when I get hold of a magazine for corrosion, I have to take a deep breath and choose which article to read. Obviously, I want to read all the articles at once! There is so much to learn, especially in terms of scie...

When I began to conduct online courses for corrosion and coatings, I had participants who eagerly attended them. However, there were many who could not find the time due to their professional and personal commitments. On my end, I was unable to conduct sessions for more than one hour everyday due to my commitments.      As a result, I was left with a feeling that I should do something more to share corrosion with others. This led to me to starting my website.      After numerous difficulties, I was able to get it up and running.      I am pleased to announce that https://corrospective.com is LIVE!      This website is based on two main qualities -EASE and FLEXIBILITY EASE of access and learning FLEXIBILITY of time and requirements Here are a few FAQS below- What is it? It is a website with online courses available for purchase. When I access them? Once you buy a course, you can access it anytime! How do I know if it is good ...