Here's a different perspective - I have been through T1 both as a customer and also on an inspection for SACL
I agree with an earlier post, I check in through preimum, B line for the Flounge then onto the aircraft. The only facility I make use of is now the DF where I will grab a bottle of wild turkey if travelling int.
I have done more D flights through SYD than I have done int but it is a close ratio.
From my experiences, plane to luggage there nearly always is a delay of 15 to 20 min. SYD is an airport that signs seem to be only helpful to those who know where they are going and the entire experience is mared in my opinion of tacky Vodafone advertising and thread bare carpets.
My experience from checkin to aircraft - QF premium, a disgrace, immigration & departures, a disgrace, X-Press card holders get a slightly better deal than the pleabs, but not much, duty free - expensive and limited choice at times, FLounge - fantastic, departure gates hohum...
On the otherside...
Not wanting to put a finer point on the network, most essential services run a N -1 redundancy on strategic equipment. SACL is no different. In fact, some systems are N -2 or even N -3! During a power outage, all essential services have emergency backup and these will power the airport for a period long enough to allow the safe landing and dispatch of aircraft to allow the ATC to divert all other flights.
Essential services are not aircon units, luggage conveyors, ticketing computers etc...
Essential services are emergency lighting, alarm systems, fire systems and of course all ATC requirements. These run an indefiniate period as they are generator backed up.
Obviously when a power outage occurs, the source of the problem is not always in your face and an inspection of the substations that litter the entire complex usually takes place. The main incoming supply from EA is monitored by EA and if it is their fault, they action the problem pretty darn fast but remembering, with most power networks (including SACL) if there is an unplanned outage (blackout) it is because the network is usually trying to protect itself from catistrophic failure by de-energising equipment before it reaches that point.
Protection systems on most electrical equipment (reticulation voltage - 11,000V or similar at SACL) operate in just a few cycles to protect the main equipment - -remember there are 50 cycles every second.
In most cases, I say be thankful that the power has switched off before something catistrophic happens. I would prefer the interior lights to be from the 24V emergency lights than the burning transformer downstairs!
look here
Sorry for the lecture!
Mr!
