Recent content by Inchtain

Hello, I would like to know if it is allowed/recommended to leave the weld build-up of limited pits of the Tank Bottoms or they shall be ground smooth? Which is better? and Is Visual and Dye Penetrant Examinations are enough for their inspection? Thanks

It was great post with a lot of information, so, thank you. However, can you please explain more on the special tools needed to put and retract the back seats? BR

Hello, I wonder if it is a common practice or a recommended way to weld the seat rings and pull them to remove the ball from top-entry ball valves?! Is there any better alternatives? Thanks

mostly external corrosion due to CP absence with scattered internal pits But, do not you think that by using a geomembrane under the new Tank floor will contain any leak?

I am sorry but I am studying two options: Floor replacement by removing the old bottom and annular plates and replacing them after having new soil combined with a geomembrane and CP protection, or using what you refer to at API 650 Annex I [Figure I.5—Double Steel Bottom with Leak Detection...

I am seeking your help in comparison between choosing the single bottom with geomembrane liner and CP protection; and the double steel bottom with leak detection and CP protection for the replacement of a Crude Oil Surge Tank floor replacement with reference to the International Standards...

The seats are Double Block and Bleed The pressure was depressurized after the body test

The crack was at the upper side of the ball and we have recently discovered a tiny crack at the center (does not extend to the sides) of the lower part of the ball. I have attached the valve sketches The latter pressure value was requested by the partner Company where the valve was to be...

Thanks for your feedback I have attached a video for better understanding of the crack location where the ball is not dismantled yet. The valve has seat rings (F316) with seal rings (Lauramid). According to API 598, the test pressure was calculated in accordance with the valve rating @ 38...

Valve Data: Borsig Ball Valve 36" ANSI 600 RJ Type: Trunnion mounted/Top Entry Process Fluid: Gas Operating Pressure: 490 psi Max. Allowable Working Pressure: 830 psi Max. Allowable Working Temperature: 110 Degrees Celsius Ball & Seat Rings Material: F316 Year Built: 1977 Test Pressure: 2175...

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...