Sump Relining
Sump Relining
(OP)
Does anyone have a company they have had good experience with that specializes in relining sumps/tanks? I have a proposal from a vendor to reline them with 316L SS. They are 30’ D x 47’ W x 13.75’ L (5 total). The cost is quite high, so hoping to find an alternative vendors to bid.





RE: Sump Relining
I also think that you should consider other materials with similar properties to 317L. Allow the company bidding on the job to bid alternate corrosion resistant materials. Consider using C276 .or other high nickel materials
MJCronin
Sr. Process Engineer
RE: Sump Relining
Also meant 316L, not 317, but I don't think we are married to one material at this point. If somebody proposes a viable alternative, we will consider it. We also have an engineering firm (since it is their cooling tower design that these sumps are part of) overseeing any proposals.
RE: Sump Relining
Was recent replacement of piping necessary ?
MJCronin
Sr. Process Engineer
RE: Sump Relining
What's the existing material?
Is it leaking or why reline?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Sump Relining
The piping is carbon steel and it in good condition.
It is a cooling tower that is used to remove heat from four 8000 ton chiller units. It is water with standard cooling tower chemical treatment (biocide, pH adjustment, etc.). The temp is slightly higher than atmospheric.
The existing material is a rubber lining applied with adhesive. There are also angle iron strips bolted into the concrete walls that hold it on.
It has been a major hassle since very early on. Multiple repairs have been made, but leakage remains to be an issue. We suspect that the design of the cooling tower basin is partially the problem. The water runs down the basin and drops into these sumps. The velocity of the water is much higher than what the design firm was expecting, so it hits the northern wall (we experience leaks at both the north and south walls). Due to the cost involved to date, SS seems like it may be a viable option to prevent further issues (along with a baffle to stop water from hitting the wall). Nobody in upper management has confidence that an applied coating (spray on, adhesive, etc.) will prevent us from continuing the problem.
RE: Sump Relining
http://www.ohiowea.org/docs/Reducing_Overflows_Usi...
RE: Sump Relining