I have a question regarding API - 650 shell horizontal joint details. Details shows that the bottom shell course is square bevel and the upper shell course is square , single or double V bevel. Why bottom shell course requires square bevel? Can we make it also single V or Double V.
Actually...
I have a question regarding hydro testing of vertical radiant tubes of fired heater.
The U tubes are being welded with the manifold and the manifold itself is in 3 pieces which is being welded at site also. After all welding activities are done the manifold circumferential joint and the joint...
We have a waste heat boiler for new sulfur recovery unit. This equipment is in 3 sections. Boiler, reaction furnace and burner section. Boiler and reaction furnace are manufactured by one manufacturer and welded together and hydrotest at shop. Burner section is manufactured separately and...
Is circumferential welding on outside of tank annular plate is allowed? Means if the outside projection of annular plate is less than specified in API then can a butt welded ring be circumferentially welded to annular plate in order to increase the outside projection.
I need some background of following clauses of API-650.
API 650 clause 5.5.2 restricts to use less than 600mm distance between inside of shell and any lap weld in bottom plate. What is the reason behind this restriction. What if a tank has been fabricated with this distance less than 600, say...
I am working on a reactor design using PVElite with a material of SA387 Gr22 Cl 2. The design conditions are 350psig@1000F and FV@100F. When i put support lugs on this reactor (the mateial is also SA387 ... and bolts of SA325) , I encounter following error.
"Maximum temperature exceeds when...
API-650 limits the plate thickness of A36 to 40mm, what I wanted to know if this would also be applicable to anchor chair for the tank. Can i use more than 40mm A36 plate for the anchor chairs of a tank?
I have a situation here . Can anyone suggest that if we have to weld a SA-51670 plates with a SS316 backing strip then which electrode is best . Well I think root should be of 309 and then caping would be of 7018 OR complete 309 .. Can any one with welding knowledge suggest. I am also attaching...
Hello All ,
Carbon Steel Vessel : SA 516 70
Cladding : 316L (For corrision resistance)
Service : H2S
Thickenss of Vessel : 18 mm
CA for CS : .125" and SS : .0625"
Is PWHT is required for this vessel ? I know that the thickness is...
Dear All ,
I am working on a 60m dia tank for fuel oil. Before I have worked on small diameter tanks and hence self supported cone/dome/umbralla roof were satisfactory. But now I need to design a dome roof with rafter on it . Can any one give me an idea about how to proceed for the...
I have following questions .
1) Does any one that what is Mechanical Catalog of Pressure Vessel and where can I find a sample catalog
2) What is the preservation procedure for Vessels and Tanks(Means that after delivery at site some vessels errects after 6 to 12 months . So how to prevent...
Can someone tell me code reference ASME or API , where it is mentioned that Carbonsteel Bolts(cadmium plated) can be used for process piping (refinery service) and either cadmium plated bolts should be used or quenched bolts ??
Whats the procedure of designing of Overflow and Vent System for Portable Water Tank . Where I can find any literature /illustration about the same . If any one has a drawing of the system please send me on my address .(mech_nedian@hotmail.com)
Thankyou and Regards
Assad
I have a question regarding Liquid Ammonia
Can any one tell me the properties of Liq. ammonia . At which temperature amonia is in liquid state . Furter what should be the requirements of making a vessel to store liquid ammonia . Is there are any particular requirements ?? If any one can share...
Is Carbon Steel material can be used for Sieve trays used in Extractor Vessel (LPG Service) ?? If yes what ASTM materail should be used . The tray support plates are CS , welded with CS vessel and trays will be bolted to the support paltes
Thankyou and Regards
Assad
My questions are related to installation of Tower Trays :
1) Whats the procedure of installation of sieve trays in a tower . Are they installed afer fabrication of tower or during the facrication ?? The problem I am facing is that the diameter of the vessel is 800 mm and the height is 14560 mm...
I am working on a LPG sweetening project in which I am using 2" Sch 80 pipe . The Design pressure is 16.6 barg and temperature is 60C.
My questions are :
1) I am using Carbon Steel A106 pipe . Is carbon steel is suitable for LPG / caustic service ?
2) If carbon steel is acceptaable , then...
