Liner Repair of fertilizer storage tank
Liner Repair of fertilizer storage tank
(OP)
Contractor attempted repair on storage tank containing fertilizer with a polyvinylchloride liner. The patch delaminated from the vessel at some point before or during initial fill leading to another tank clean out
My own understanding of linings is such that they likely did a poor job prepping the liner in place for the patch repair to properly adhere. This seems likely because other repairs inside the tank did not fail and we made a special point to confirm initial fill practices. Are there any standards or best practices one would recommend for this second go around?
I'm a little frustrated personally because we had time and money to replace the entire liner but the contractor didn't seem to want to do that and felt the liner integrity was secure.
My own understanding of linings is such that they likely did a poor job prepping the liner in place for the patch repair to properly adhere. This seems likely because other repairs inside the tank did not fail and we made a special point to confirm initial fill practices. Are there any standards or best practices one would recommend for this second go around?
I'm a little frustrated personally because we had time and money to replace the entire liner but the contractor didn't seem to want to do that and felt the liner integrity was secure.

RE: Liner Repair of fertilizer storage tank
RE: Liner Repair of fertilizer storage tank
Surface prep of both the steel and the PVC overlap is critical as is temperature and humidity.
Internal picture would be good.
How was the patch undertaken to deal with the thickness change?
Was the repair procedure reviewed and approved by you or an experienced liner engineer?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Liner Repair of fertilizer storage tank
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RE: Liner Repair of fertilizer storage tank
Found out this liner repair was not the cause of the “original” leak - the cleaners who flooded the liner originally missed an area in the center and the thought is that product left between the liner was pushed out while filling. Though this delamination would have hurt us anyways.
Thanks everyone for the help.