[21/11/2012]-All DART services Suspended

[Jamie2k9]

Tweeted by IR:

All DART services suspended due to a tecnical fault. Dublin Bus honouring all rail tickets

[Jamie2k9]

Update:

DART services have resumed. Subject to some delays

There was 30 min delays earlier to North bound due to a train failure.

[Mark Gleeson]

Looks like a complete systems failure in Connolly CTC halted everything, only ever seen this once before

[Jamie2k9]

Looks like a complete systems failure in Connolly CTC halted everything, only ever seen this once before

Was that just DART or nationwide failure.

[Mark Gleeson]

Looks like something in CTC died and halted play

There are only things
1. Loss of the suburban CTC mainframes, there is backup, plus the local signalling can be put into automatic. The 1984 system covers the DART plus the bit to Broombridge+Portmarnock+Bray Head

2. Loss of the OHLE SCADA system, will mandate halt of all electric services until control is returned, likely the power will go off automatically, again there are backups

Looks like a progressive loss of CTC control

[Jamie2k9]

Just as it happend the 18.35 can to a stop near the crossing thats beig put into operation after 5 mins we moved and went through crossing with no barriers closed but staff stopping traffic and then done no more than 25mph to Thomstown then back to normaluntil another level crossing problem which resulted in a further crawl for a few miles.

[Inniskeen]

Originally Posted by Mark Gleeson

Looks like something in CTC died and halted play

There are only things
1. Loss of the suburban CTC mainframes, there is backup, plus the local signalling can be put into automatic. The 1984 system covers the DART plus the bit to Broombridge+Portmarnock+Bray Head

2. Loss of the OHLE SCADA system, will mandate halt of all electric services until control is returned, likely the power will go off automatically, again there are backups

Looks like a progressive loss of CTC control

Can' see that a failure of the OHLE SCADA system would have any effect on the actual power system itself, all that would happen is that the supervisory screens would go blank. No big deal really as the OHLE protectice systems would still operate.

All services indeed appear to have been suspended but there is absolutely no evidence that power was unavailable. The service was wound down in a controlled manner with all DART trains halted at stations.

Seem to have been several additional unrelated DART failures earlier this evening.

[Mark Gleeson]

Yet another total CTC collapse last night