I understand that it primarily occurs at pH>8.5, but is there a general ammonia content threshold below which season cracking is unlikely to occur in steam service? Thanks in advance.
@racookpe1978 - practically speaking, we won't be able to grab additional "good" samples from clients at this point. And the interesting thing about the water is that its only corroding this coupling. It all makes me think that the coupling is metallurgically defective.
@redpicker - not sure...
There won't be a full blown failure analysis- this is a relatively minor issue. It is interesting because of the way it occurs, not because it is a risk to life, limb, or the coffee company.
I offered to look at it pro bono and I plan to do some microscopy on it at a friends lab (and maybe...
Here is a thought problem for your weekend brainstorming pleasure.
A local coffee company who leases industrial sized coffee brewers is having a corrosion issue with a coupling in one of their models. This coupling/nut connects the hot water storage tank (which operates at 190-205F) to the...
Where would I go to find allowable stress values for HDPE (polyethylene) material? To be more precise, I'm not interested in a given manufacturer's quoted values, I need a stress tables such as those found in ASME BPVC Section II, but for piping specs. I've looked at B31.3, but if they were in...
