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Thanks defenderJ, that was pretty useful information. Considering the ambients described above and cost as the driving factor, steel would be the material of choice for the service. Your maintenance cost for lap patch plates probably was due to external corrosion (heavy rains....) and not due...

I am looking at Ambient of 50 degrees Celsius, desert/dry environment, winters of around 5 degrees celsius min., dry weather with very little rain. Forgot to mention that. What is your annualised maintenance cost per meter cube per year. Did you have to go for tank or sectional replacement due...

Caustic strength is 50% at Ambient temperature. Iron does not matter. Process and capacity wise, both materials are acceptable. However the choice would depend on the Life Cycle Cost (say 25 years)of using either a heat treated steel tank or a GRP tank. If the higher GRP capital cost offsets...

I am looking at the option of either going the steel or the GRP way depending upon the NPV cost for a life cycle of 25 years. This means that the total estimated cost for both the tanks are the capital cost of constructing tanks with either material and the maintenance cost associated with the...

The tank is 50m3

When selecting a storage tank material for Caustic, it is said that steel tanks are cheaper on CAPEX but the FRP tanks work out to be cheaper on OPEX over its life cycle. Does any Life Cycle Cost comparison (capital and maintenance) exist between both steel and GRP tanks and if yes what is the...

My thinking was that a new CS casing with SS cladding would be much cheaper to a new whole Chrome casing. Any idea about cost difference between a CS and Chrome casing. I was given to understand that cost split between material and labour for large pumps is about 45% and 55% and a new chrome...

Johnny, Are you injecting any Oxygen Scavengers in the Boiler Feed Water. Have you considered SS or Chrome cladding inside the casing to control corrosion. It may be much cheaper to clad the casing internals (wetted areas) with Chrome Alloys or with Stainless Steel rather than replace the...

Please share the monitored data on "Wear/Corrosion Rate" in the CS casing of a BFW Pump relative to the "Quality of Feed Water" plus internal failure and casing leaks experienced due to the increasing/decreasing water quality used on the BFW pumps and preventive measures taken to solve the problem.

Stainless Steel wear rings tend to gall/seize when they come in contact with each other causing considerable downtime and cost. Does similar problem of galling/seizing of wear rings occur on API C-6 pumps with Chrome wear rings. Any experience out there replacing the Stainless Steel wear rings...