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Thanks for your contributions The Exchanger will be installed in North Africa (Libya) where both codes are acceptable. Is it right that PED is more stringent than ASME?

We are purchasing a new condenser (Heat Exchanger) for a LNG Plant. We wonder if we request an ASME or PED Stamp from the manufacturer? and what is the main differences between those 2 stamps, apart from ASME for America and PED for Europe The Heat Exchanger Data: Fluid: Shell: Hydrocarbon...

Please see the Pump Drawing Correction of some design data: Pump Flow Rate: 150 m3/hr Head 30 meters RPM: 1465 Single Stage It is installed at a covered Oily-Water Pit where 20 cm space left from the pump to the base and the liquid covers at least 1.2 meters of the down part of the pump The...

Thanks for sharing your thoughts In fact, we have just done a experimental trial, and what we would kindly like you sharing some tips or advices to reach a quite typical procedure. The material for tank, piping and equipment are steel. Only biocide and oxygen scavengers are currently used...

Thanks for every one for your interesting inputs. Actually, the pipe used is exactly the same for the existing pipes and there were no any internal corrosion protection apart from the chemical treatment. The defects are internal and affect the old pipes as well, but they remain acceptable to...

Hello, We have two vertical pump installed (one is stand-by) at an API Separator to transfer the recovered crude oil back to the production separators, where the suction section is submersed in the oil. Few days ago, when the operator was ordered to switch off the working pump and start up the...

Well ! Here are the pipe data: Year of Construction: 1980 Environment: Desert (North African) Diameter: 18" Thickness: 19.05 Material: API 5L Gr. X60 Code: API 1104 Design Pressure: 2800 psi Design Temperature: 45 degrees Celcius Fluid: Treated Produced Water+Water from Supply Wells Service...

Hello all, Recently, we repaired a rupture in a water pipeline by replacing a pipe spool. Surprisingly, and after about 6 months we experienced a leak in the same trunkline and in the same replaced new portion. Could anyone elaborate more on how new welded pipes corrode faster than the older...

Hello, We have tried injecting small dosages of Chlorine into a Treated Water Tank at an NGL Plant, in addition to the injection of the Biocide. The results were marvelous and the bacteria was dramatically decreased. However, I wonder if there is cons and pros for continuing injecting the...

Dear Gents, Could you possibly inform me whether in-service horizontal foam concentrate fiberglass storage tanks (2000liters) are subjected to periodic inspections? and whether they are considered pressure vessels and required to be certified by a third party? I wonder what checks can be done...

Dear Gents, We are going to perform a general turnaround for an NGL Plant. I would like to know if it is mandatory by code/standard to dismantle the safety valves pertaining to the equipment planned for inspection during the period of the shutdown for inspection and setting verification. As...

The problem is that I have old versions of the codes

Thanks for your feedback. Actually, I am referring mostly for used/overhauled valves (ball, gate, globe, butterfly, wellhead equipment, safety valves) inside an onshore oil production field. Regardless of Company Specifications, mostly followed standards are API 6A, API 6D, API 598, API 527...

Dear gents, Would you confirm whether pressure testing of valves (ball, gate, glob, etc.) require a third-party presence, review or approval according to the international applicable standards and codes. Thanks,

Good morning, Can anyone give me clear steps for the following valve tests? Low-pressure closure test backseat test Double block and bleed high-pressure closure test I would appreciate it if you have videos explaining the procedures. Additionally, is it a good practice to test gate valves...

Hi again, I forget to show you the Company recommended double bottom design. I am not really convinced about it and I have doubts for the reliability of the design, especially whether it is compliant with API. Please have a look and let's us discuss. Regards...

Hi, Thanks for raising interesting notes and opinions. Here below additional information about the Tank and location: The Field is at a place rich in archaeological significance, where attention must be given to ensure protection of both large scale (carvings and monuments), and smaller...

Dear IFS, I agree with you and the leakage is put under close monitoring with mitigation strategy in place until the return of the other stand-by Tank into service which is currently under process of repairing. With consideration to the environment, we are planning for maintenance scenarios...

Hi, Out of my curiosity, does API recommend or require the use of double bottoms for a leaking Crude Oil Storage Tank (Tank in-service), when the whole corroded bottom replacement is foreseen? In my opinion, it will be more economical to replace the Tank floor with the addition of geomembrane...

Could you possibly inform me about using Ceramic Fiber Blanket 1" THK in two layers instead of Ceramic Fiber Boards 11/2" THK for a partial replacement of the internal lining of a furnace (MWP: 1000 psi, MWT: 194 Fahrenheit, Burner using Fuel Gas) due to unavailability of insulation boards in...