recirc line errosion / fac picure.http://files.engineering.com/getfile.aspx?folder=56c4ea99-86da-4046-b2b7-66563fb0f98c&file=recirclineerosionIMG_0541.jpg
Gentlemen. Thanks for your insight and ideas. As we work our way into this I think we have lots of things going on at once:
PH levels in the feedwater that range from 10 to 5, dead legs where chemicals "reside" until pumps are cycled into service, high turbulence in pumping and recirc lines, and...
Thnaks! for the comments and insight,it is hard to beat many years of expeirience with similar problems. next step: gather field data, (presseres, temps, pump/pipe materials, chems & chem feed points)and sketch the layout. (deaerator operates at 50 psig sat. and pumps discharge at about 1000...
just getting started on a feedwater pump failure problem which "has been gong on for years" according to the onsite team, the problem description starts out like this: we are regularly replacing pumps due to "pinholes" in the housings and recirculation piping, we switched to a high purity...
