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Delta wants someone to pay for its losses in airport outage
The CEO of Delta Air Lines says the company will seek compensation for its losses after a power outage knocked out the Atlanta airport's power supply and also its backup electricity for about 11 hours Sunday. (www.cnbc.com) Más...Sort type: [Top] [Newest]
I have a hard time believing that the main power unit and the backup were in the same vault that caught fire. But kudos to Chick Fil A for opening on Sunday to serve hot meals to the stranded pax.
One sub station feeding airport. Not unusual. Substation blows. No power to airport. No generators that I know of. Any transfer switch would mostly likely be near the main. Shorter distance.
It quickly becomes how many millions or billions do you spend trying prevent the loss of how many millions or billions. I mean people were upset, money was lost, but no one came close to dying. They got it back up in half a day. I'd say they did fine.
well..
For sensitive infrastructure at least two seperate HV feeds are common, sometimes three for critical. Backup generator(s) are not usually so closely co-located to the feeds and transformers as to be exposed. And, modern gensets can be fully online within seconds.
Another scheme is to have the 'back-ups' running on-line as the primary source, and commercial ac as the secondary, or backup source. Not many do it that way anymore.
I digress..
As someone else said, the switchgear IS typically common to all sources. And, there's your potential single-point failure.
Rarely, do you see complex redundant switchgear schemes of the past, with parallel and isolatable networking. This scheme makes statisticians smirk and bean counters throw-up.
Critical loads usually have a third means of backup, usually some battery and inverter scheme, which can offer limited holdover. However, as the KW load increases any UPS worthy of more than a few minutes output becomes uber costly due to size and support.
Sorry for my long-winded dialog. Kinda bored I guess..
For sensitive infrastructure at least two seperate HV feeds are common, sometimes three for critical. Backup generator(s) are not usually so closely co-located to the feeds and transformers as to be exposed. And, modern gensets can be fully online within seconds.
Another scheme is to have the 'back-ups' running on-line as the primary source, and commercial ac as the secondary, or backup source. Not many do it that way anymore.
I digress..
As someone else said, the switchgear IS typically common to all sources. And, there's your potential single-point failure.
Rarely, do you see complex redundant switchgear schemes of the past, with parallel and isolatable networking. This scheme makes statisticians smirk and bean counters throw-up.
Critical loads usually have a third means of backup, usually some battery and inverter scheme, which can offer limited holdover. However, as the KW load increases any UPS worthy of more than a few minutes output becomes uber costly due to size and support.
Sorry for my long-winded dialog. Kinda bored I guess..
You make great points. Can you imagine the size of the UPS system to support Hart Field.
Not meaning to be critical to but Hospitals,jails,prisons and control systems such as air traffic control are critical systems not the terminals.
Not meaning to be critical to but Hospitals,jails,prisons and control systems such as air traffic control are critical systems not the terminals.
But I do so enjoy watching the Bean Counters Upchuck! It really gets interesting when they start squabbling over the big pieces.