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Dear All, Refer to the subject can anyone explain what is the Difference between Tube & Pipe in terms of Technical aspect. I Have observed the following differences Primarily :- 1. Understand that Tube will be available in Circular/Square/Rectangular, where as Pipe will be available in only...

Hi.. Refer to the subject we have requirement for supply of Stand alone Pressure vessels to our customer for refinery applications. Scope includes the following as well:- 1. Mandatory spares, 2. Erection & Commissioning Spares, 3. Two Year Operational Spares. Understand that for Bare Vessels...

Thanks for the response and guide.. really this will be helpful.

@ r6155 Thanks for the responses. As in client QAP(Quality Assurance Plan) it is specified that Pneumatic test of Tube to Tube Sheet joints @ 1.25 kg/cm2 will be done before final inspection. In QAP hydro will be done during Final inspection, Since it is a replacement tube bundle the QAP given...

Thank you all for the time inputs. As per the client requirement shell side Pressure (Design Pressure is 11.7 Kg/cm2) which is higher than the Tube Side Pressure (8.4 Kg/cm2), so that our client want's the tube bundle to be tested on shell side by using dummy testing fixtures at manufacturer...

Hi.. Refer to the subject, our client have requirement for Tube Bundle Replacement for Shell & Tube Heat Exchanger.. Our scope includes Hydro test of tube bundle on Shell Side only, for the same we have to design a dummy shell, Test Flange, Test Ring & Packing Gland to complete the hydro on...

Want to understand the difference between minimum & average Tube wall thickness. My basic understanding is if we order for minimum wall thickness then there won't be any negative tolerance is allowed in wall thickness. whereas if we order for Avg wall thickness then there will be both Positive &...

Good Day.. Refer to the subject we have a requirement for Supply of Shell & Tube Heat Exchanger to Liquid Handling Terminal at Port. Type of Heat Exchanger is TEMA R - BEU (H) and ASME, Shell Sizes for various exchangers are 10",12" & 14". Design pressure is around 5.3 Kg/cm2 & Design...

@ Dear All:- In Fuel Gas Conditioning Skid, we have done the testing in three different pressures as follows:- Test Pressure is to be done for Maximum Operating Pressure x 1.1 times. 1. Upto PCV - Test Pressure 1 (65 Kg/cm2). 2. After PCV - Test Pressure 2 (52 Kg/cm2). 3. Flare Header (PSV...

@ r6155, Yes hydro test is also done (Pipe spools & vessels separately). In addition to hydro, we have to carry-out the air or N2 leak test also at Maximum Operating Pressure x 1.1 times. Many times we have insisted client to accept hydrotest + gas leak test at low pressure (i.e 3.5 Kg/cm2)...

@ r6155 The application is at offshore platform for Natural Gas Conditioning, pneumatic test is to check the system integrity & to check leaks if any in the piping joints. since the natural gas also contains H2S content as well so it is hazards and not safe if leaks in offshore-platform.

@ Littleinch, Thanks for your response and well noted and will calculate the no of bottles as suggested. Yes the cylinder size and amount of gas is for the atmospheric condition only. One more suggestion from our side is, based on the skid volume & test pressure how about connecting 4 or 5...

I have to carry-out a Pneumatic Test by using either air or N2 (Nitrogen) for my 3 identical Fuel Gas Conditioning Skid (FGCS) after assembly of complete vessel & piping's at our shop, this is to verify the integrity of all piping/vessel joints for offshore application. As per our Customer...

Thank you all for the responses & your shared experiences.. it really helps & understands a lot about Series A & B. Regards, Venkat

Understand that SS 316L is already a corrosion resistance material but still our client asking us to Procure SS 316L material certified with NACE requirements. If i approach vendor for NACE requirement for SS 316L, they don't carry out any additional test under NACE standard, but their TPI...

@Geoff13 & @ Mike, Thanks and will appreciate for your response and valuable time. Regards, Venkat

In Piping Flanges there are two different categories available under ASME B 16.47. one is Series A and another one is Series B. Why two different standards for the same size of Standard Flanges, is that only for the following Purpose:- 1. Series A Flanges to withstand more piping loads 2...

@georgeverghese, @austsa, Thanks & will appreciate for your valuable time.

@ Austa and @LittleInch Thanks and really appreciate for your prompt responses and it helps me. 1. Understand from your response that the Vane pack is used to remove the bigger/heavier droplets of liquids from the Gas at the Inlet of Vessel. 2. And Demister is located at the Outlet Nozzle of...

@saplanti Noted your message.