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  1. Cessh

    Allowable Stress Table For SA213-T23

    Dear All Does anyone knows where can i find the allowable stress values for material SA213-T23 in order to calculate the minimum wall thickness. Because i couldn't find it in the Table 1A of ASME Sec II Part D. Regards,
  2. Cessh

    Material Equivalency

    Dear All Does anyone knows what are the ASME Standar Material equivalent to these 2 Chinese standard material 15CrMoG & 12CrMoVG in terms of the allowable stress? Because i need to find the Minimum Wall thickness for these 2 materials. Any reference would be greatly appriciated. Best Regards,
  3. Cessh

    Thinning Rate

    Dear Senior, Does anyone knows what is the "best practice" equation used to calculate Boiler tube thinning rate given that you know it's initial tube thickness, last measured thickness and operating hours? in order to predict whether in the next overhaul we should replace the tube or not.. NB...
  4. Cessh

    Questions regarding table 1A ASME Sec II part D

    Dear members of Eng-tips I have 4 questions regarding table 1A ASME Sec II part D: 1) What is the meaning of the characters positioned in the sides of the table (A02, A03, 01 etc)? 2) Why is for some materials at certain temperature the allowable stress is not stated and only "..." appears on...
  5. Cessh

    Figuring out allowable strength reference (boiler pipe)

    Dear all, I got to data from some old senior about boiler pipes data and used to calculate the minimum thickness, Data Pipe No. 1 Pipe : Eco tube Material : SA-210 C OD Design: 2.01 inch Thickness Design : 0.24 inch Temperature Design: 617 Farenheit Pressure Design : 2894.96 Psi ALLOWABLE...
  6. Cessh

    Bearing Overheating

    Dear All, I'm doing an FMEA for Bearing that uses grease as the main lubrication. I've identified several failure causes for bearing overheating (above 90 degrees Celsius): 1) Overgreasing 2) Undergreasing 3) Loose Fits 4) Loss of Lubrication (leakage) 5) Wrong Type of grease used 6)...

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