Hello Guyz,
Currently we are fabricating a pressure vessel details as below.
ID = 850 mm
TL to TL = 8500
Design Pressure = 18.0 bar
Design Temperature = 90 deg C
Material = SA 516 Gr 70
No lethal No Sour No H2 service.
The Vessel has dish ends on both its ends and 2 hand-holes. No Manhole...
Thanks for your reply guys.
we have selected the following materials
plates : SA 516 Gr 60
Pipes : SA 106 Gr. B
Flanges : SA 105
Fittings : WPB SA 234 Gr. WPB
Well we did check for the material as per figure UCS-66 per which the materials do not require any impact testing.
not claiming any...
Hello Fellow Engineers,
We are currently fabricating some pressure vessels for a project, which follows SHELL DEP & the vessel design code is ASME section VIII- Div 1.
Our MDMT is about -6 DEG C. Max thickness for pressure parts is 15 mm.(varying from 6 mm to 15 mm)
A cl. in the SHELL DEP for...
Hi,
We are designing a CS vertical vessel supported on a skirt. The MOC is as under
Shell/Head = SA 516 Gr. 60
Flanges = SA-105
Nozzle Necks = SA-106 Gr. B
Skirt = SA-516 Gr. 60
Base plate = SA-283 Gr. C
The MDMT = -7 Deg C. (Also the ambient temperature = -7 Deg C)
The Pressure parts (shell...
We are in process of providing calculations for a pressure vessel details as below
Dia = 2500 mm
Design Pressure = 10 bar
Design Temp = 150 Deg C
CA = 3
MOC = SA 516 Gr. 60
Radiography = Spot
Joint Efficiency = 0.85
Design code = ASME section VIII Div 1
A nozzle had to be analyzed using FEA...
We are in process of providing calculations for a pressure vessel details as below:
Dia = 2500 mm
Design Pressure = 10 bar
Design Temp = 150 Deg C
CA = 3
MOC = SA 516 Gr. 60
Radiography = Spot
Joint Efficiency = 0.85
The nozzles loads were to be analyzed as per WRC 107 /297. We have used Code...
Thanks Guys for your input, sorry if i was not very clear with my question.
Well i actually wanted to know how is this ftr = 3 arrived at in both the below formulas
Saddle Reaction Force due to Earthquake Ft [Fst]:
= Ftr * ( Ft/Num of Saddles + Z Force Load ) * B / E
= 3.00 * ( 4725/2 + 0 ) *...
Need some help guys,
Was performing an saddle analysis and came across one thing that caught my mind.
The equipment weight is 6300 kg
The equipment shear in seismic is 4725 kg.
The same was matched up in the pvelite file
and the saddle calculation (for one saddle) was as follows:
Saddle...
Hi,
I am currently deisgning a heat exchanger which is in sour service for the shell side fluid.
The client has specified tie-rods of material SA-193 B7M for the same. Our proposal for SA-36 was not accepted in lieu of the stated material. Hence we have decied to build the tie rods of several...
Hello All,
ASME Section VIII Div 1, Appendix 2, TABLE 2-4 RECOMMENDS MINIMUM GASKET CONTACT
WIDTHS FOR SHEET AND COMPOSITE GASKETS.
Can anyone explain what are composite Gaskets. Is spiral wound gaskets considered as a composite gasket?
Also for heat exchangers over and above the minimum...
Thank you for your reply Mr. Jones,
Well I wanted to know if welding structural steel directly to a pressure part is acceptable. Are there any concers if this is done.
Cos generally as a good engineering practice we never weld a structural steel directly to a pressure part, howver in the csae...
Hello All,
I am currently reviewing some drawings for a pressure vessel in sour service. The Details are as below:
Design code: ASME section VIII Div. 1
Design pressure : 10 bar
Design Temperature : 150 Deg. C
Corrosion Allowance : 3 mm
MOC : SA 516 Gr. 60
MOC of rungs : SA 36
Service : Sour...
Hi Guys,
Need some help / information on PWHT of a heat exchanger.
I am handling a carbon steel heat exchanger with incoloy 825 tubes. The details are as below
HE Type : BEM
shell material : SA 516 Gr. 60
Shell Thk : 13 mm
Shell ID : 600 mm
No of tubes : 250
PWHT : YES (Bcos of process...
The design code is "Good Engineering practice" so we are reffering many handbooks like Megessy, Dennis Moss & Roark's. Well the notches in the primary vertical members are big enough to clear the pad of nozzles, we have around 10 primary stiffeners out of which 2 have 2 notches to clear the...
Need some help guys,
I am currently designing a rectangular tank. 5 m ht x 4 m wide x 7 m long placed on a structure 20 m high.
We have designed the tank using staad and provided it with vertical channel stiffeners and horizontal stiffeners. We designed the stiffeners considering vertical...
