2nd rig but cic. pump a snoozer, page-15

Hi Tawny, yes, GGW said the problem with the O-rings was due to their absorbing carbonated water while under pressure, resulting (in my words!) in CO2 outgassing when the system was depressurised - this sounds to me something like a diver getting the bends, and I gather is not seen as a major problem as the replacement rings will be to a higher spec to address the problem (I would guess to prevent their absorbing the water in the first place).
As I understood it, the bigger problem was with a flange on the return side of the pump which was not up to spec for temperature & pressure (much embarrassment and abject apologies received from those responsible). Replacements have been sourced (in Aus) but the manufacturers/suppliers want to re-test the whole unit, hence the longer delay in closed loop test. Sorry Tawny, I'm no engineer and this is very much my layman's take on what I remember of what GGW said (and his call actually woke me, trying to catch up after an all night session, so I was not as on the ball as I could have been!)
He also mentioned it is always a dilemma deciding how much technical detail to put into bulletins, so I'd suggest writing to request more detail if we feel it's needed, and our wish may be accommodated.
Cheers
Tony