If it was about safety, it would be done every time for every tank. Ironically, the one major way for moisture to get into a tank is if the final filter has failed... which is maintained by the shop requiring $$ for said VIP.
100% about safety would be filling in a blast chamber, anything else is just a money grab. That's the only way... a shop can't guarantee what happens when it leaves, let alone if the sticker is even real... but you can't charge for a blast chamber like you can a yearly VIP...cough, cough... scuba tax.
"If it was about safety, it would be done every time for every tank," now that is just a load of super-rich organic fertilizer spewed out of the distal end of the bovine alimentary tract.
Want 100% safety? Don't ever go diving. Stay in bed. Wait. Even that has risks.
In fairness though, to just throw out "It's for the children!" I mean "It's for safety!" is often used as an emotional appeal when they can't articulate facts and reason. So, to articulate it better: "it's about mitigating risk and it's the best we got, when consistently applied, at a token cost and what most literature and practice says is prudent so that's what we're going with."
Somebody do not like? Then I point them thusly:
Welcome to August Industries - August Industries Inc.
(not the only one, just the one I've done binness with)
For a VIP I expect somebody knowledgeable to take a look just to see if anything went bad during the set time frame since the last looky look. Done at an arbitrary time interval. A means of mitigating risk to a more acceptable level.
That 737 I bought a seat on to RTB next month, I trust United be doin "C" checks on them 73s on an arbitrary schedule (probably 4,000-6,000 hours) and fly them until the next check. Well, except for the "A" check and "B" check items. I'm good with that approach. I suppose some might argue it's a waste of time that could be better spent with butts in seats in the air.
It's just a risk mitigation measure that most attornies would argue was prudent based on documented procedures and practice. And the plaintiffs' attorney would argue that would likely have prevented injury to their client had the shop held to that standard. And a bunch of other stuff.
(What prominent SB member was it whose valve got stopped up with Al
2O
3 flakes in, IIRC, Mexico a few months back that should been caught by most recent VIP?)
So no, it's not a money grab. Not at $13.73 for an inspection (as determined yesterday). If somebody wanted to amortize that for 11-12 months, it comes to 3.5-4.0 cents a day. I walk past 3-4 pennies at 7-11 or Quik-Trip every day or so.
Lake time any minute now!
Ain't nothing finer than an ice-cold Shiner!