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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsOil Refinery Co...Oil Refinery Co...Fire Water Piping Metallurgy UpgradeFire Water Piping Metallurgy Upgrade
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11/23/2006 9:00 AM
 
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Dear Experts, We're experiencing clogging and underdeposit corrosion of our fire water line manufactured of carbon steel. The water supply is potable water. We're looking into options of either installing a water treatment upstream or possible upgrade of the piping metallurgy. I would like to know what others are using for this service be it Stainless Steel, CS with internal coatings or Glass Fibre Reinforced Epoxy piping? Appreciate your sharing. regards, Alani
 
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11/28/2006 9:00 AM
 
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Alani, Not my area of expertise, but I have heard of sites switching the make-up water to treated cooling water blowdown with some success. Worth a thought... Regards, sWorn.
 
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11/28/2006 9:00 AM
 
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A cost effective solution is to use an internally cement lined C.S. pipe. We have the same for our fire water system (fire water used is sea water) and our experience is good. I have also seen recently the large dia potable water piping network for City/Municipal distribution made of internally cement lined C.S. pipes. Also you may refer AWWA guidelines for further info. (American Water Works Association) Regards.
 
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11/30/2006 9:00 AM
 
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hi I agree to go with using the cement lined C.S. pipe . Upgrading to 0-30 cu/ni will be so fine. Could you give us some sample of this fire water line to give the right direction. Thanks Mar Refinery Corrosion Engineer.
 
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12/25/2006 9:00 AM
 
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Nowadays for all our projects -- onshore + offshore, we have been using Glass Reinforced Epoxy piping. Care is to be taken to design the supports for surge forces for all scenarios of operation of FW pumps etc. A well designed and properly installed GRE piping will give trouble free service for at least 20-25 years of plant life.
 
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