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Thanks Pierre

Thanks

Dear Shvet, 7.93 * 0.001 from where we get this factor ?

Thanks It is clear

Dear Shvet Thank you very much I confuse little for H2SO4 calculation If our make up alkalinty = 55 ppm and make up flow 160 m3/hr H2SO4 is 98% Make up PH = 8.1 Cooling tower PH = 8.2 How to calculate ?

Thanks Pierreick Already consultant been informed

Hi every one We are adding H2SO4 for CW PH control but we are consuming more than normal flow , we have 2 pumps and both running with 100% stroke, what is the causes ? I want to calcualte needed H2SO4 to get PH 8.2 , our PH between 8.2 and 8.3 and maintain ok but acid consumption is high Note...

Thanks

Flow is superheated steam Temp 235 c Pressure 10.5 bar Pipe material : CS

Is furmanite can isolate gate valve and remove the valve later ? After repair the defcted valve

Hot tapping i beleive for small pipe not for large , our size is 18 inch !

Hi littleinch The valve type is gate valve The valve is passing Opened and closed many times but no improvment same passing No seal injection point This valve want to close it to remove upstream CV for repairing and no isolation for it , it is live with MPS header , need to avoid total shutdown

Thanks Pierreick

Full respect to all but this is the first time to me in thus forum, anyway the isolation vlave is not fully closed and want to remove upstream CV (attemperator) for maintenace but could not isolate it due to this passing

It is not like that, plant is running and this job need total shutdown so we are searching for another solution to avoid total shutdown, our turn around will be in 2025!

Thanks for helping

Sorry for that, i tried to sketch it as P& ID is confidential , I want to isolate online steam line to remove athe attemperator as showing in the sketch Note : i heared about AOGV isolation but not sure will be ok for 18 inch valve or not...

The line is 18 inch , the valve is the main valve and there is no bypass

Hi I am Utility Shift team leader and we have steam letdown station but one of the valves stuck opened and can not isolate it to hand over attemperator valve to maintenance , my question is Is there any technique to isolate the valve online ?