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Hello Every one, Does anyone could advise me where I can find materials for performing dynamic analysis? we have received a vibration survey from the our client. vibration occured in existing suction and discharge centrifugal water pumps. I have never had a chance to perform such analysis, I...

Hello evey one, as my best knowledge, using flange CS assembled to SS flange,will create a galvanic corrosion unless the bolts are isolated. The issue is this, we are using lapjoint flange ( stub end SS, lap joint flange is CS) connected to equipement which have SS flange nozzle. the material...

Dear Members, Could any one has a thought about using flexible joint instead of expasion joint? I'll appreciate your feedback. Regards. Dj364

Hello every one, I have received old existing drawings ( turbine/compressor). I have to set turbine nozzle initial ( thermal) displacements in my analysis. I am reading on drawing " center of gravity". this point is shown on the compressor side. ( turbine and compressor have the same...

Dear members, I am checking the existing Spring can in order to re-use it. after modifying a the same spool by adding a new flanged valve. I asked for data of the spring, only spring rate, the and type are available informations. the cold load is missing. Does anyone know what are the...

Hello every one, I have to perform stress analysis (insulated) HP steam line (750F,700Psig)and by pass steam line. line 4" connecting to existing Air compressor/turbine, they want to re use one of the existing spring support. I have in my hand iso's of existing dwg as well as new ones( tie in...

Hello every one, Is designing piping layout at pump discharge nozzle ( downstream) as 180 deg elbow( 2x90 deg) could avoid putting spring hanger? ( because of adding flexibility?). I haven t gone thru calculations. Just want to know from your experience. I will appreciate any comments. Dj.

Hello eveyone, I am working on proposal. just a quick question at what temperature the spring hanger might be required? I assume 300 C Am I correct? Thanks in advance for sharing your experience. Dj.

Hello Every one, I would like to have your thoughts about: using hot bends instead of elbows. ( on shore plant all diameters) (Of course we have to make sure that the required wall thick doesnot change after bending). what are advantages vs inconvenients.. Any commnets will be appreciated...

Hello Every one, I am running a 70” straight line (46 meters). I am designing a Flexible joint to absorb thermal expansion as well as thrust force. Technically, the thermal growth is absorbed by the expansion joint and thrust force by tie rods, I put expansion joint without tie rods, the...

Hello every one,I am a new member As per B31.3 304.1.3, D/t > 100, I am following the procedure outlined in the BPVC-VIII-1, UG28,UG29,UG30 I am trying to determine the minimum wall thickness required under external pressure, and the required stiffening ring. "A" factor that I found falls to...