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  1. pvrerate

    PWHT required for SS clad carbon steel plate?

    It has been proposed that 347 SS clad carbon steel plate be used for fabrication of a MEA regenerator vessel which is considered as also being in alkaline service. Hence, a metalurgist has specified that the competed vessel must receive PWHT. Is PWHT required or even desired for this column?
  2. pvrerate

    Why does Compress not allow the opt

    Why does Compress not allow the option of using SA-182 F22 Class 1 Long Weld Neck Flanges as a material choice?
  3. pvrerate

    Weld Path Strength Calculation for Boilers

    A NPS 2, set-on nozzle (Figure PW-16.1(a)) is being installed on a Steam Drum Head. Neither PG-38 nor PG-52 applies. The AI is asking for weld path strength calculations. Such calculations show that the nozzle fails following Figure PW-16.1(a). Is it the Code's intent that these calculations...
  4. pvrerate

    Existing Pressure Vessels--Allowable Stress Range for Primary + Secondary Stresses

    Is it appropriate to apply the criterion of ASME Section VIII, Division 2 paragraph 5.5.6.1(d)(2) to vessels built prior to the 2001 Code Edition? (If I am correct this additional requirement was added in 2001.) For rerating existing equipment we follow API-510. For analyses of loadings on...

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