OMyMyOHellYes
Contributor
The "visual inspections" that are part of the hydro are typically WAY short of what a complete visual would accomplish. I've watched at my primary hydro shop and it seemed to me to be charitably characterized as "cursory". It is kind of in league with a doctor saying "turn your head and cough" as opposed to having labwork and maybe an ultrasound of problem spots done (looking in kidneys for naissant stones for me) as part of a physical exam.Why did it fail vis? How did it past hydro without passing vis? The vis is explicitly part of the hydro procedure.
They know how to do hydros. Appears less so visuals. My opinion: likely that they could not tell you what the standards are or where to go look up the standards. They simply look in the tank to see if there are any lobsters living in there. OK - they seem to be looking for big chunks of the bottle material eaten away by active oxidation. Which is a long way from a good visual inspection.