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hi, Anyone, please explain the difference between shear hopper and mixing hopper which are used in drilling rigs.

Hi, Could you please suggest which 2" NPTF check valve is suitable for compressed air system? Swing check valve or ball valve? Please advice. Thanks, BN

Hi, We have received a query to make rectangular fuel tank and specs are below. Please assist me to calculate vent size for this tank. The 500 bbl rectangular storage tanks would consist of the following: > Tank design as per good engineering practice and structure to comply STAAD Pro...

Hi, As per our client spec there is no detail about groove inlays for API 6BX flanges and we placed the material orders without inlays. Is it ok? The flange material is AISI 4130 and gasket material is SS16. Thanks, BN

Hi, Flow medium: 15% and 28% Hcl Acid Working pressure: 10000 psi Flow rate: 60 bbl/min Working Temp: Max 50 deg C, Min -10 Deg C What would be the suitable piping material and MOC for valves?

Our driven pulley dia is 23.5" and it sould have 940 rpm to acheive the required output. Drive pulley dia and speed have been calculated as 12.5" and 1800 rpm in order to acheive our output in driven pulley. Now the question is how to calculate the required minimum distance between two pulley...

Hi, I want to know why wire line unit is being used in drilling rigs? I saw a wire line unit spec, as per that the wire dia. is 0.103" and length is 23,000 ft. My question is, on what basis the dia. and length have been fixed? Is there any calculation or thumb rule? Thanks, BN

Dear Engineers, We are using a fabricated Cross 6” x 6”,Sch 80 on the inlet and outlet side of the manifold,Working pressure is 1440 psi.Can you please tell me how to check(calculation) if this design is passing? MOC A234 WPB. Pic is attached for your...

Dear All, Last four years I have been working as Piping Engineer in offshore jack up rig projects. Now I want to work in petro chemical plant piping projects. I tried hard but I could not get any offer.I am really confused & depressed. your valuable suggestions will help me. Thanks, BN

Hi all, Last three years I have been working as piping engineer in offshore and marine projects (Esp for jackup rigs). Now I want to work in petrochemical plant piping projects. You all know both are different.What should I do to get into petrochemical plant projects.Please advice. Thanks, BN

We need to install burner boom in offshore rig, which has the capacity of handling 16000 BPD or 120 MSCFD,100% burn. We have to provide compressed air line to burner boom. So We need to place a compressor with sufficient air volume and pressure to allow burners to function at a maximum rate of...

HI, What is the difference between FL & FLS gate valve? Please explain.

Hi, We are having a pressure bladder tank which has been designed for 10bar. But the problem is pressure relief valve is not mounted on the tank. But the maximum discharge of the pump is only 7 bar and the pre-charge air pressure s 2bar. SO the pressure will never go beyond the bladder tank...

Hi, Pressure tank supplier said that they cant provide pressure switch on tank.Our pressure switch limit is 5-7 bar. Can we fix the pressure switch on the inlet line which is going to pressure tank from pump discharge. Will it work out? PLease advice

Anybody knows the standard or formula which has been used to find out the wall thickness(with cold bending) for hydraulic tubing material st37.2 (EN235). Please advice. For instance, If tube OD 38mm and working pressure 5000psi , what would be the required wall thickness(with cold bending...

To find out engine exhaust back pressure we are using the following formula: P= (L X S x Q^2 X 3.6 X 10^6) / (d^5) + Muffler resistance P = Back pressure in KPa. L= Length of pipe in Meter. Q = Exhaust gas flow in Kg/m3 S = Density of gas Kg/m3. D = Inside diameter of pipe in mm. T = Exhaust...

Why do we need to comply API RP 53 to fabricate mud gas separator?

How can we choose flange rating? one way is referring B16.5. Is there anyother calculation to select flange rating?

3/4"Sch 80 and 1" Schh 80 pipes bending radius is 5D. How to calculate the wall thickness of these pipes after bending? What will be thinning after bending. Please find the attached drawing for your information.

Hi friends, I have to choose a right pump for my project. I will explain about the task. we need to provide emergency wash shower and eye wash station on the monkey board in a jack up drilling rig. At present we have a pump which delivers 23GPM @ 3.6bar. The pump outlet has been connected to...