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I work in a power plant (4unit, each unit 150MW, total: 600MW). We have a big problem in the boiler of the units. The supporting tubes wich hang the supperheater and reheater tubes; fail after about 5 or 6 years in each unit( I am not sure about the number of years). Please see the attached...

what are parameters determine the quantity of flow in a pump? 1- D of impeller 2- Rpm of shaft and what are others?

How can the diffuser in pump convert velocity to pressure? Increasing of cross section of flow? is this along with energy loss?

There is two 3000 m3 storage tanks (two pool of water) for feeding demineralization plant. We have two parallel pumps (2*100%) for demineralization plant. Occasionally we have shortage of water so we want to use a reverse osmosis unit. Is there any problem to use common header for feeding...

what is the most important problems in reverse osmosis operation? we must use a unit of reverse osmosis continuously or not? membrane must be in wet and pressurized condition all of the time?

i work in a power plant (1600MW: 4*150MW) in the past we did chemical cleaning only for water wall tubes beacuse the risk of turbine blade damage. at this time in the water wall tubes, deposit is 350 gr/m2. but in the supper heater tubes, it is 450 gr/m2. we have the base 400gr/m2 (in water...

when can we titled a pump as a booster pump? what is the purpose of term " booster " ? thanks for attention.

is that true that probe of PH meter(after reading the PH) put in KCl solution before the next reading? or it is wrong method. we have problem and must calibrate the PH meter after short period and i think it is may be from this operation.

Hi. we have a corrosion problem about the seal oil ring in the generator. this corrosion have took place on the hydrogen section( please see the attached picture). what kinds of corrosion may take place in this section? is it scc? what do you think about the reason of this corrosion? please...