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| The two alarms 25/03/2010 at 21:06 #985 | |
UKTrainMan
1803 posts |
Just out of interest really what are the two alarms exactly. I mean the "Winchburgh Tunnel Alarm" and the "Airport Tripwire Alarm"? Also, what is the procedure if either alarm does go off? Thanks in advance for reply. Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for. Log in to reply |
| The two alarms 25/03/2010 at 21:06 #7810 | |
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UKTrainMan
1803 posts |
Just out of interest really what are the two alarms exactly. I mean the "Winchburgh Tunnel Alarm" and the "Airport Tripwire Alarm"? Also, what is the procedure if either alarm does go off? Thanks in advance for reply. Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for. Log in to reply |
| The two alarms 25/03/2010 at 22:00 #7815 | |
Peter Bennet
5402 posts |
They are mentioned in passing in the manual- what exactly happens is not dissimilar to what happens in Cambridge- as it's a clone. More than that I'll let ou find out as and when. Peter I identify as half man half biscuit - crumbs! Log in to reply |
| The two alarms 26/03/2010 at 02:20 #7822 | |
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UKTrainMan
1803 posts |
Have checked both manuals (one provided with the simulation and the one on the Wiki) and cannot find any reference to either alarm - and yes I have used the search too (before I posted). I also cannot recall the apparently similarities with Cambridge?!!
Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for. Log in to reply |
| The two alarms 26/03/2010 at 06:42 #7828 | |
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Peter Bennet
5402 posts |
I's alluded to under 'Scenarios'. Probably not played Cambridge enought times then.... Peter I identify as half man half biscuit - crumbs! Log in to reply |
| The two alarms 26/03/2010 at 08:45 #7831 | |
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DavidB
31 posts |
The Winchburgh Tunnel alarm went off whilst I was playing, firstly I was told to stop all trains as it was flooded, then engineers added TSRs to the tunnel. Dave Log in to reply |
| The two alarms 26/03/2010 at 09:11 #7832 | |
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AndyG
1842 posts |
The Cambridge 'incident' scenario is a bridge strike at the low underbridge at Newport. Very rare chance of occurance, but causes major disruption I believe. I've listed Edinburgh's 9 normal closure scenarios on the WIKI, will add the major ones as they come to light. I can only help one person a day. Today's not your day. Tomorrow doesn't look too good either. Log in to reply |
| The two alarms 26/03/2010 at 09:37 #7834 | |
MJD
149 posts |
The trip wire at the airport is if a plane is to low it trips the wire which sets app sigs to red and sets off alarm.
Mike. Log in to reply |
| The two alarms 26/03/2010 at 13:54 #7845 | |
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kbarber
1743 posts 
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MJD said:The trip wire at the airport is if a plane is to low it trips the wire which sets app sigs to red and sets off alarm. These seem to be provided in a number of places where the runway approach is over a railway (Southend and Gatwick spring immediately to mind, discussion on John Hinson's "Blower" makes it clear there are plenty more). I think the consensus is that if they're ever activated a serious plane crash is in progress, (in at least one case the tripwire is lower than the OHLE) so for the same reason as not including SPADs I think I'd ask for this to be made decorative only rather than included in any scenario. Log in to reply |
| The two alarms 26/03/2010 at 14:24 #7848 | |
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AndyG
1842 posts |
I 'suspect' that the scenario in the sim is the S&T technican accidently breaking the wire and triggering the alarm, and a bit later calls to say it's reset.
I can only help one person a day. Today's not your day. Tomorrow doesn't look too good either. Log in to reply |
| The two alarms 27/03/2010 at 21:24 #7910 | |
DriverCurran
688 posts |
My understanding is that these wires (certainly the one at Gatwick) would be tested on a regular basis Paul You have to get a red before you can get any other colour Log in to reply |
| The two alarms 29/03/2010 at 09:41 #7950 | |
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kbarber
1743 posts
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If testing is in progress the S&T would always agree it with the signalman before taking any action that would affect signals. I don't recall any testing in existing SimSig scenarios so (unless Peter has added yet another devilish twist) I'm not convinced that operation of the runway trip is likely. As for "tech breaking wire" (does that happen? - I'd have thought it was robust enough to avoid that sort of problem), again to my mind it's pretty much the same as a SPAD - everything drops in an emergency mode that suggests something extremely nasty is happening, which isn't what I want from my Simsigging.
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| The two alarms 29/03/2010 at 13:22 #7958 | |
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Forest Pines
525 posts |
MJD said:The trip wire at the airport is if a plane is to low it trips the wire which sets app sigs to red and sets off alarm.From my memories of travelling that way regularly, the trip wires (one each side of the line) are low enough that, as other people have said, they would only be tripped during a very serious incident. The image in my mind is that the trip wires are definitely lower than the runway approach lights. The Google Earth images of the location appear to confirm that - the runway approach lights have noticeably longer shadows than the trip wire support poles: http://maps.google.co.uk/?ie=UTF8&ll=55.957545,-3.350216&spn=0.001083,0.002411&t=h&z=19 Log in to reply |
| The two alarms 30/03/2010 at 18:51 #8000 | |
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Revan
6 posts |
AndyG said:The Cambridge 'incident' scenario is a bridge strike at the low underbridge at Newport. Very rare chance of occurance, but causes major disruption I believe. More common in reality than you might expect; I saw it happen at least three times over the space of five years. Ever seen a tall artic with the top torn off? 
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| The two alarms 31/03/2010 at 09:54 #8010 | |
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kbarber
1743 posts
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Revan said:AndyG said:The Cambridge 'incident' scenario is a bridge strike at the low underbridge at Newport. Very rare chance of occurance, but causes major disruption I believe. Yep! Very long time ago near Latchmere Junction, a little after 14:00 one pleasant summer afternoon. Fortunately nothing scheduled to or from Stew Lane until well after 18:00 (and late shift was pretty quiet in those days so I had time to wander down & gloat). The Bridge Inspector was pretty relaxed when he arrived: "that bridge looks like it's had a fair few accidents in its time", signed it back in & settled down for a cuppa. Don't think the lorry driver was quite so happy. Log in to reply |
| The two alarms 31/03/2010 at 12:29 #8011 | |
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ledgero2
93 posts |
we had a lorry stuck under a bridge at our university for the best part of a month. thing is hed already been under a bridge of the same height.......to rub it in the slogan on the side said "protecting people, reducing risk". oh the irony.
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| The two alarms 31/03/2010 at 12:45 #8013 | |
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AndyG
1842 posts |
Straying off subject a bit. My reference to "rare occurance" was specifically related to the simulation(s), not real life. I can only help one person a day. Today's not your day. Tomorrow doesn't look too good either. Log in to reply |
| The two alarms 03/04/2010 at 14:00 #8147 | |
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Ron_J
331 posts |
Interestingly, the airport tripwire at Turnhouse was broken by high winds one morning last week - so it does happen! It caused a fair amount of chaos too...
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| The two alarms 03/04/2010 at 19:31 #8155 | |
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Revan
6 posts |
kbarber said:Yep! Very long time ago near Latchmere Junction, a little after 14:00 one pleasant summer afternoon. Fortunately nothing scheduled to or from Stew Lane until well after 18:00 (and late shift was pretty quiet in those days so I had time to wander down & gloat). Always seemed to happen about 1430-1500 - in other words, at a perfect time to block traffic a long way in both directions and stop our bus home from school turning up for at least an hour... Log in to reply |