3 Pressure Relief Devices for Integrity Engineers

3 Pressure Relief Devices for Integrity Engineers

Mission Impossible, Uncategorized
Caring about plant integrity is a busy and stressful work. Human psychology is such that maintaining current environment is confused with staying in a comfort zone. Albeit this zone may not be comfortable at all (same outcomes from same contractors, same burden of responsibility and document management, same questionable risk management confidence). If you wish to change this environment, consider the holistic improvement of integrity tasks: 1. Know your Risk Cost and Safety Implications One thing in the back of your mind might be: 'How confident are we about what we do for the equipment integrity and safety'? - an obsessive question. Consider all those people going on site and doing the hard work there. And also - all the resources being spend over a facility life. Looking at the…
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What is Gigacycle Fatigue importance for pant operators?

What is Gigacycle Fatigue importance for pant operators?

Uncategorized, Why new RBI?
It is known that the 1st fatigue curve was created in XIX century by German engineer August Woehler. He investigated why railroad carriage axles fail in a delayed manner. The Woehler's phenomenological fatigue model was correct and remains generally valid now. However, there are some additional limitations and improvement ideas, which are necessary for practical vibration fatigue predictions. Misconceptions first Consider the above graph meaning: The Number of stress cycles to failure (N) is a function of the Stress amplitude in each cycle (S). More stress means less life, as shown by the red line. The yellow line simulates a constant amplitude fatigue limit. Finally, the green line is the variable amplitude stress cut-off, e.g. no fatigue damage is assumed in design for lower stresses. The historical reason for the…
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