API 570 STUDY GUIDE
API 571 STUDY GUIDE
(For 2019 Exam, API RP 571 Second Edition, April 2011)
Each damage mechanism is organised in the code under 9 headings
. We will go through each damage mechanisms from this point of view. As mentioned in the previous post you have to make notes for each mechanism. While making the notes the below points are to be kept in mind.
. We will go through each damage mechanisms from this point of view. As mentioned in the previous post you have to make notes for each mechanism. While making the notes the below points are to be kept in mind.
1. Description of damage.
Direct questions can be asked from the description of damage mechanisms. Read the description of all the 15 damages and try to remember it.2. Affected Materials
Not all the mechanisms affects all the materials. There are some materials which are affected by some particular mechanisms. If you can make a comparison chart of the mechanism against materials, that will be very much helpful for remembering the points.
Example:
A. 400 series of SS is affected mainly by two process
1. MIC
2. Sulfidation
B. All the materials are affected by three process
1. Erosion / Erosion-corrosion
2. Mechanical Fatigue
3. Galvanic Corrosion
3. Critical Factors
Critical factors for each damage mechanism are to be noted. Example, Critical for the erosion mechanism is the size, shape, hardness and velocity of solid particles present in the fluid.
4. Affected units or equipment.
Some particular process equipment's are affected by some particular mechanisms. Example: Erosion-corrosion plays a major role in catalyst handling piping and equipment in FCCU unit in the refineries.5. Appearance or Morphology of damage.
There will be some particular appearance for a damage. Example: Calm shell type damage is the appearance of mechanical fatigue6. Prevention / Mitigation
The aim of the study of the damage mechanism is to understand it and find means to mitigate it.
Example: Reduction of velocity or having optimum velocity of the impacting materials will reduce erosion / erosion-corrosion
7. Inspection and Monitoring
Every damage has to be identified and assessed, the common techniques for those has to be known to an inspector.
8. Related Mechanisms
Some damage mechanisms will be known by other names depends on its location, affected area, the affected means etc. Example : Vibration fatigue is a related mechanism of mechanical fatigue
9. References
Not of importance in the exam point of view.
Summary:
Please make notes on the above point of view. We will review each mechanism in the above point of view from the next blog of this series.
Summary:
Please make notes on the above point of view. We will review each mechanism in the above point of view from the next blog of this series.
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Disclaimer: Photos are taken from different websites. If this violates any copyright rules this will be removed. Please inform me if any of the photos or contents violate copyright rules. (through 13hareesh13@gmail.com). This blog is meant for educational purposes only. If it is used for any other means without the written consent from the author, the author will not be responsible. The author does not guarantee the accuracy of the data used in this blog. All the information, data, photo/image, calculations presented in this blog should be used at the sole risk of the user. The blogger is not liable or responsible in any way for any damage, losses or costs arising from the use of the blog for any purpose whatsoever or whosoever it may be. The blog is to be used at your sole risk and responsibility.
Disclaimer: Photos are taken from different websites. If this violates any copyright rules this will be removed. Please inform me if any of the photos or contents violate copyright rules. (through 13hareesh13@gmail.com). This blog is meant for educational purposes only. If it is used for any other means without the written consent from the author, the author will not be responsible. The author does not guarantee the accuracy of the data used in this blog. All the information, data, photo/image, calculations presented in this blog should be used at the sole risk of the user. The blogger is not liable or responsible in any way for any damage, losses or costs arising from the use of the blog for any purpose whatsoever or whosoever it may be. The blog is to be used at your sole risk and responsibility.
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