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  1. Yarik

    Surge and stonewall of centrifugal compressors

    Hi everyone, I would like to ask about some advise in regards to these two unstable conditions: surge and a stonewall. One of my multistage compressor experienced a malfunction o a blow-off valve, therefore the compressor protection did not kick in when the compressor reached the control line...
  2. Yarik

    Allowable stress of SA-193 (B7 or B7M) studs in B31.3 systems (or ASME Section VIII - Div 1)

    Thank you for the advise, again. There is no doubt that should this case follow a legal route, than an expert will be contacted. And in regards to other aspects, you are right. There are at least two more contributing factors I am aware of: 1. Right bolting sequence was not followed (also was...
  3. Yarik

    Allowable stress of SA-193 (B7 or B7M) studs in B31.3 systems (or ASME Section VIII - Div 1)

    TGS4 Thanks for the directions. The reason for me doing these calculations is to compare two designs, as I have mentioned. I am sitting with a vessel, flanges of which were redesigned (thickness increased, size and amount of bolts decreased,contact surface of the flanges decreased). As a result...
  4. Yarik

    Allowable stress of SA-193 (B7 or B7M) studs in B31.3 systems (or ASME Section VIII - Div 1)

    Hi gents, very helpful info is here, thanks. auzie5, tensile stress area in your calcs, shouldn't it be doubled, since you use a stud (2 times more of threads per inch, since there are two nuts)? other question I would like to ask. I would like to calculate a force that would be applied on a...

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