Stainless Steel Corrosion
Stainless Steel Corrosion
(OP)
What is causing this and is it a cause for concern? (See pic) We have 304 stainless pipe, bolts, nuts, & washers (per submittal) submerged in a storage tank holding treated, chlorinated drinking water. pH is 7.7. Chlorine residual is 1.7ppm. Pipe was installed about 6 months ago. Tank was brought off line and drained to inspect another item and this was found. Any thoughts?
thanks
thanks





RE: Stainless Steel Corrosion
RE: Stainless Steel Corrosion
RE: Stainless Steel Corrosion
It was probably not necessary. You should check to make sure that the sealant is certified for use in potable water.
Does not appear to be corrosion of stainless steel.
RE: Stainless Steel Corrosion
Whatever the lubricant and/or sealant that was used on the bolts/flange holes is what has the rust appearance. Whatever it is, sure hope is was NSF approved.
RE: Stainless Steel Corrosion
RE: Stainless Steel Corrosion
RE: Stainless Steel Corrosion
I think the gasket is over-compressed so you may be getting some gasket degradation as well. I always fix what I know is wrong first so go with new gasket material, like teflon, then re-inspect after a few months.
RE: Stainless Steel Corrosion
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RE: Stainless Steel Corrosion