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All across the Great Western territory => The Wider Picture Overseas => Topic started by: TonyK on July 24, 2013, 22:08:48



Title: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on July 24, 2013, 22:08:48
The BBC News (http://www.bbc.co.uk/news/world-europe-23442018) is reporting a serious rail accident in Galicia, Northern Spain. Four carriages have derailed, and 35 are confirmed to have died at this stage.

Quote
Spanish train in deadly derailment
 

A train has derailed in north-western Spain, with at least 10 people reported killed.

(http://www.firstgreatwestern.info/Boyamijealous_7108a707/_68934952_hi018751329_zpsb9de1478.jpg)

Spanish railway company Renfe confirmed the train had come off the tracks near the city of Santiago de Compostela in the Galicia region.

A Renfe spokesman told AFP news agency several people had been killed and several more injured.

Spanish news agency Efe quoted police and hospital sources as saying at least 50 people were injured.

Reports said all 13 carriages had left the tracks, and four carriages had overturned completely.

Images showed dozens of emergency workers crowded around ruined carriages.

Passengers were shown lying on the ground being treated.

Renfe said the train carried more than 200 passengers, and was on the express route between Madrid and Ferrol on the Galician coast.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 24, 2013, 23:10:54
My thoughts go out to the victims of this latest horrific incident.

That's three major train crashes in developed countries in the month of July.  :'(


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on July 25, 2013, 06:49:40
It is absolutely awful, made worse if that is possible by it being the start of a holiday.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Chris from Nailsea on July 25, 2013, 10:18:28
An update, from the BBC (http://www.bbc.co.uk/news/world-europe-23442018):

Quote
Dozens die as Spanish train derails in Galicia

A train has derailed in north-western Spain, killing at least 77 of its 218 passengers and injuring more than 100, officials in the Galicia region say.

All eight carriages of the Madrid to Ferrol train came off the tracks near the city of Santiago de Compostela.

Media reports say the train may have been travelling at more than twice the speed limit around a curve.

Officials have not commented on the cause. Analysts say it is the worst train accident in Spain in 40 years.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 25, 2013, 11:20:10
I have found this Spanish Wikipedia page (translatable) that fills in some technical details absent from the news reports:
http://es.wikipedia.org/wiki/Accidente_ferroviario_en_Santiago_de_Compostela_de_2013 (http://es.wikipedia.org/wiki/Accidente_ferroviario_en_Santiago_de_Compostela_de_2013)

This was an Alvia service, using both a new high-speed line (well under half the distance) and existing lines. It was a class 730, made by Talgo and also what I would call a "Talgo" (articulated) train. It changes gauge en route.

The HS line runs up to Santiago on a new straight alignment, then follows an existing line into the station. This alignment is sharply curved by HS standards, due to the position and alignment on the station. The derailment happened just as the train came to the first of these curves (400-500 m radius), so the reports of excessive speed do make sense.

This is a recently opened line (this year or last), so on-line details may be out of date. Google's maps are very old (2007), Bing's a bit newer.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 25, 2013, 11:30:13
I can't believe they've started (now finished?) removing the broken train....the HSE held Hatfield train for 3 weeks while the investigation took place....


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 25, 2013, 11:53:37
The French railways and judicial authorities have been criticised for not sealing the relevant part of the Br^tigny-sur-Orge site. However, I do not see that the relevant part is where the train stopped in either of these cases, it is where it derailed. The rolling stock may be implicated in some derailments, but the initial railway inspection should determine pretty soon which vehicle came off first. Why hold the rest, when we know passengers can end up underneath carriages? In Santiago only the leading power car would be relevant in that sense.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on July 25, 2013, 12:11:26
I can't believe they've started (now finished?) removing the broken train....the HSE held Hatfield train for 3 weeks while the investigation took place....

Indeed, no matter how tragic a disaster may be, there is much to be said for removing the resultant debris promptly rather than closing the line for days or weeks.

Unless they already know the cause of the disaster, then an inquiry should be held and lessons learnt.
The train had a data recorder, and there seems plenty of photgraphic evidence of the immediate aftermath, therefore little point in preserving the wreckage for detailed on site investigation.

Initial reports on the BBC website and elswhere suggest that the train was travelling well in excess of the permitted speed.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 25, 2013, 12:16:21
Excess speed is confirmed by some footage from a trackside surveillance camera right at the scene - shocking in its violence.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Brucey on July 25, 2013, 12:32:05
Here is a video of the trackside camera (WARNING: this video shows the actual crash, which some may find upsetting)
http://www.youtube.com/watch?v=o32nxuHshv4&feature=youtu.be


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 25, 2013, 12:39:26
eeuuww......looks as though the rake of coaches separated and derailed as the lead power car tried to go round the curve. Only some way round did the G forces see to the power car, by which time the leading coach had collided with the wall

Speed def the issue.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on July 25, 2013, 12:48:53
Yes, certainly looks like excessive speed.
Although I have not attempted to calculate the speed, I presume that others have.
The spacing between the OHLE supports or other structures is surely known, and from this the train speed may be determined at least approximatly.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Thatcham Crossing on July 25, 2013, 14:07:55
According to a BBC report I've just seen, the line speed at the accident site is 80kmh (50mph). Just looking at it as it comes into view, it's got to be doing double that. Shocking.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: thetrout on July 25, 2013, 14:35:30
What's interesting is that it's the middle of the train that starts the derailment.

I've travelled on these Alvia trains and they can travel up to 155 mph.

It does seem like excessive speed. However I also noticed that the train wasn't tilting around the corner.

There was an unconfirmed report that the driver stated he was doing 180 kph. So it does seem like excessive speed. However it is possible that it was a safety system failure that caused the driver to travel too fast.

Of course, my sympathies to all those involved in this hideous disaster. Truly terrible. :'(


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 25, 2013, 15:10:53
"What We Know: we know how it happened, but there are questions arising "

http://zelo-street.blogspot.co.uk/2013/07/spanish-rail-crash-what-we-know.html


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 25, 2013, 15:28:40
To me, it appears that the derailment begins with the generator car behind the lead vehicle. These trains have two generator cars, one at each end, with diesel engines to allow the sets to run on non-electrified sections of line.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 25, 2013, 15:36:44
Yep, that's the way I see it too.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: BerkshireBugsy on July 25, 2013, 17:16:42
I've just watched the sky 5pm news and allegedly the train driver who was in control at the time time of the accident (I believe there were two on board) had a Facebook where he allegedly previously  posted pictures of the train speedo showing higher than recommended speed.



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 25, 2013, 17:53:28
I've seen the posted picture of the speedo (showing just under 200 kph) but there is little context to it, or any reasoned conclusion of evidence, that at the time the picture was taken, the speed was inappropriate. Could have been on a stretch of line where 200 kph is permitted. Could have been during testing.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on July 25, 2013, 18:19:15
BBC News reports that speed is being seen as the cause, if not the reason. The train was running late, and one theory is that the driver was trying to make up time. He has been put under investigation by the police. Both drivers survived, and there is a data recorder installed. The driver is said to have told his control centre by radio, after the event, that he had been travelling at what the BBC translate as 120 mph - more that 190 Kph.

Truly awful, and my thoughts are for the victims and families.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Electric train on July 25, 2013, 18:28:46
It is truly shocking incident.

The cause if it is excess speed is that the cause, I am a little concerned with the consequence they way the carriages seemed to disintegrate and the train be came disarticulated.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 25, 2013, 18:46:35
Much of the cause of the damage to the passenger vehicles and the disarticulation is, to my mind, probably as a result of hitting the concrete wall. I doubt that even the best of crashworthiness could withstand such impacts. Had the vehicles left the track where there was space for them to decelerate without hitting an immovable structure then they may have stood up to such a derailment better.

One looks at Grayrigg where a Class 390 Virgin Pendolino derailed at high speed. There the vehicles tumbled down an embankment and each coach stayed largely intact and in line. Had that train hit an overbridge or retaining wall then the outcome could have been a lot worse.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: BerkshireBugsy on July 25, 2013, 19:00:06
First of all apologies if this has already Ben posted.

In recent coverage on the TV they explained that prior to the stretch of track where the tragic accident occurred the train was (a) travelling at a high speed which was appropriate to the section of track  and (b) was controlled by a system called ETRMS .

However my understanding of the section of track where the accident occurred wasn't subject o ETRMS which means that the trains speed would not automatically reduced when exceeding the speed limit.

I also believe the black box recorders have been retrieved so hopefully they will allow the acts surrounding this accident to be determined

Like others my sympathies are with those who have suffered as a result of this event



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 25, 2013, 19:36:17
French TV is reporting (as official information, not rumour) a couple of points that could be seen as point-scoring, but are justified as reassuring the French about their TGVs.

First, a TGV rake is very difficult to overturn or break up because the carriages are solidly pivoted to a shared bogie at each end. Two have derailed at high speed and while the power cars fall over the carriages never have. (Some years ago I recall hearing there had been at least six derailments with none overturning; perhaps the rest were at low speed.) The Talgo trains have little torsional stiffness at the coupling.

Secondly, the French balises not only warn of overspeed but brake the train for any speed limit, while these Spanish trains are only braked if exceeding a limit and above  200 km/hr. I can't make much sense of that, and it may not apply to all trains or lines, but it was stated as from Spanish railways.

You may also have heard these stories about one of the two drivers having a reputation for boasting how fast he can go. I think the scope for rumour feeding itself is a bit high in this case - I'd rather wait for the investigation.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 25, 2013, 20:05:57
First, a TGV rake is very difficult to overturn or break up because the carriages are solidly pivoted to a shared bogie at each end.

The train involved in this incident also has carriages with shared bogies. Difference though is the RENFE S730 has a single axle bogie.

A TGV rake taking a bend at more than twice the maximum permitted speed would, I suspect, also overturn. No design can overcome the laws of physics.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on July 25, 2013, 20:31:52
A tank would be lucky to survive hitting that wall at that speed. BNM is right about the laws of physics - it looks like the power car almost made it around, but everything behind it tried to carry on in a straight line, like Newton said it would.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 25, 2013, 21:09:47
And that second vehicle has a heavy diesel engine it, which probably means a higher centre of gravity. If so, then that explains why it is the first vehicle to tip.

It appears that the lead vehicle derailed after being pulled over by the generator car. This is apparent when you look at the video and see the rear of the lead vehicle being pulled outward before it topples. I wonder whether the train may just have made it round the curve if it was one of the similar all electric RENFE Class 130s that have no generators cars.

Evidence of the forces involved can be seen from some of the pictures that have been taken at the crash site. The diesel engine (weighing 6.6 tonnes) in the rear generator car was ripped clean out and ended up on the wall parapet.

(http://news.bbcimg.co.uk/media/images/68935000/jpg/_68935848_018752198.jpg)


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: grahame on July 25, 2013, 22:27:01
And that second vehicle has a heavy diesel engine it, which probably means a higher centre of gravity. If so, then that explains why it is the first vehicle to tip.

It's been suggested that the Salisbury accident of 1906 (http://en.wikipedia.org/wiki/Salisbury_rail_crash) in which a train went around the corner too fast would not have happened if the locomotive had been an older one with a lower centre of gravity been pulling the train (ref: O S Nock - Historic Railway Disasters and L T C (Tom) Rolt - Red for Danger).


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on July 26, 2013, 09:01:15
Accidents of this nature beg the question as to how many trains have previously taken the curve at excessive speeds and JUST got away with it.
If the train in the recent disaster took the curve at say 180KPH with tragic consequences, was this a one off error (momentry lapse of attention by driver who perhaps mistook his location) or had exceeding the speed limit become common practice, perhaps with other trains taking the curve at say 160KPH and JUST getting away with it.

In the UK speed limits are strictly enforced with drivers at risk of dismissal for all but the most trivial breaches.
This is however fairly recent, I can remember trains routinely exceeding speed limits, was there not a "140 club" years ago of those HST drivers who had reached 140 MPH.
SLIGHTLY exceeding the limit is most unlikely to result in an accident, there is a considerable safety margin. The real risk comes when speeding becomes the "new normal" and actual speeds very gradualy creep up to substantial excess speed.

If driver ABC has taken a curve at 100MPH without accident, then driver XYZ might be tempted to try 102MPH, and so on.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 26, 2013, 09:19:07
This is all new track. Surely any modern signalling system records the train speed, at least at every balise, and (with radio) in the fixed system as well as the train?


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on July 26, 2013, 09:47:40
Media reports suggest that although relatively new, that this track was not equiped with ETRMS or any equivalent system.
In which case it would have no protection against accidental or intentional overspeed.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 26, 2013, 11:15:54
I think it was only the HSR track that was new - that train had just left the new track for the old....


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 26, 2013, 11:35:08
As I see it, this was new track built on an existing alignment that was widened to make room for it. It only goes to/from the HS line one way, but joins the other lines approaching the station. So it's moot if its a bit of HS line with a low speed limit, or a completely rebuilt old line as a link to the HS line. I prefer the former version. Either way it's new and its signalling must be too.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: JayMac on July 26, 2013, 18:16:56
The curve in question comes after many miles of straightish running over newly built dedicated high speed track. The new line was signalled with ETCS (European Train Control System) to a boundary point somewhere prior to the curve, where the signalling system switches to ASFA, Spain's near equivalent of the UK's TPWS.

I've watched an in-cab video of a train traversing the same stretch of line at the correct speed, but I don't know enough about Spanish signalling to work out where the demarcation point between modern and legacy signalling is.  The new line joins the old part way round the curve.

That video can been seen here:

http://www.youtube.com/watch?v=QvvvL3OTtXk (You'll need to switch to 480p or 720p as the default 360p doesn't seem to work)

Forward that video to around the 31 minute mark to see the approach to the curve.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Chris from Nailsea on July 27, 2013, 00:03:08
Another update, from the BBC (http://www.bbc.co.uk/news/world-europe-23465992):

Quote
Spain train crash: Driver Garzon declines to give evidence

(http://news.bbcimg.co.uk/media/images/68959000/jpg/_68959207_68959206.jpg)
Train driver Francisco Jose Garzon Amo is helped by a policeman after a train crashed near Santiago de Compostela, 24 July 2013.

The driver of the train that derailed killing 78 people has refused to answer initial questions, Spanish police say.

Francisco Jose Garzon Amo - hurt in Wednesday's crash - is under guard in hospital.

He is suspected of driving too fast round a bend. Reports say the train was travelling at more than double the speed limit at the time of the crash.

The case should now "proceed to a judicial process", the police added. Spain is in three days of mourning.

The police chief in the Galicia region, Jaime Iglesias, said earlier that the driver would be questioned "as a suspect for a crime linked to the cause of the accident".

No date has been fixed for his appearance before the judge, a spokeswoman for Galicia's High Court, which is leading the investigation, told the AFP news agency.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Electric train on July 27, 2013, 08:32:47
The curve in question comes after many miles of straightish running over newly built dedicated high speed track. The new line was signalled with ETCS (European Train Control System) to a boundary point somewhere prior to the curve, where the signalling system switches to ASFA, Spain's near equivalent of the UK's TPWS.

I've watched an in-cab video of a train traversing the same stretch of line at the correct speed, but I don't know enough about Spanish signalling to work out where the demarcation point between modern and legacy signalling is.  The new line joins the old part way round the curve.

That video can been seen here:

http://www.youtube.com/watch?v=QvvvL3OTtXk (You'll need to switch to 480p or 720p as the default 360p doesn't seem to work)

Forward that video to around the 31 minute mark to see the approach to the curve.


I watched that vid through, there does not seem to be any fixed colour light signals until well past the accident site, I can only assume there is in cab signalling but it cannot be a speed controlling type of signalling whereby the system stops the train if the drive exceeds to max speed


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Red Squirrel on July 27, 2013, 09:44:13

...That video can been seen here:

http://www.youtube.com/watch?v=QvvvL3OTtXk (You'll need to switch to 480p or 720p as the default 360p doesn't seem to work)

Forward that video to around the 31 minute mark to see the approach to the curve.


I found watching that as horrifying as the video of the accident - the topography of the area where the train came off the rails couldn't have been much worse.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 27, 2013, 11:32:25
I watched that vid through, there does not seem to be any fixed colour light signals until well past the accident site, I can only assume there is in cab signalling but it cannot be a speed controlling type of signalling whereby the system stops the train if the drive exceeds to max speed

So, the emerging picture is that the new line uses ETCS (ERTMS) which can provide full supervision of train speed. But does it have to? It can operate as an in-cab signalling system using only inputs from train and track, so I presume the reverse link to the train to apply the brakes is a mode that can be omitted.

There are still some "why did/didn't they" questions. It seems the handover from ETCS to AFSA was 4 km back from the curve, just before the braking point at 0.05 g. I'm sure ETCS would signal this braking where the restriction is after the handover, but only if the braking starts before it. Why put the boundary there, when braking from straight high-speed line to a low speed curve has to come near the top of any risk assessment?

And some plain puzzles ... e.g. ERTMS say that all AVE lines were switched to level 2 (no lineside signals) in 2012*, whereas this one was opened in 2011 and, if it has no signals, clearly used level 2 from the start.

I also wondered why the old and very wiggly Spanish gauge line from Ourense, that joins the AVE line from the left at the curve, was of the same gauge. It turns out this AVE line was built to 1.668 m and will be converted later! These trains also go through a "drive-thru" gauge-changer near Valladolid, having left Madrid on a (1.435 m) AVE line, and before joining the existing line to Ourense. Spanish rail engineering is indeed unlike our own in many ways.

 (* Correction - I missed that they (UNIFE http://www.ertms.net/media/2434/ertms%20facts%20sheet%205%20-%20ertms%20deployment%20in%20spain.pdf (http://www.ertms.net/media/2434/ertms%20facts%20sheet%205%20-%20ertms%20deployment%20in%20spain.pdf)) say the first was opened in 2011, which may have been this line.)


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Gordon the Blue Engine on July 27, 2013, 11:55:38
In the UK speed limits are strictly enforced with drivers at risk of dismissal for all but the most trivial breaches.
This is however fairly recent, I can remember trains routinely exceeding speed limits, was there not a "140 club" years ago of those HST drivers who had reached 140 MPH.


I'm not sure that's true Broadgage.  I was around when HST's came in on the Western region in1976, and I recall they all had speed limiters either from the outset of public service runs or very soon after which prevented them doing more than about 130 mph.  It maybe that early driver training runs etc pre-dated the speed limiters. 

I do remember doing 110 mph behind a Class 50 between Didcot and Reading: unlike Class 47's, which ran out of power above about 80-85 mph, Class 50's could really go!



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Electric train on July 27, 2013, 12:57:17
I watched that vid through, there does not seem to be any fixed colour light signals until well past the accident site, I can only assume there is in cab signalling but it cannot be a speed controlling type of signalling whereby the system stops the train if the drive exceeds to max speed

So, the emerging picture is that the new line uses ETCS (ERTMS) which can provide full supervision of train speed. But does it have to? It can operate as an in-cab signalling system using only inputs from train and track, so I presume the reverse link to the train to apply the brakes is a mode that can be omitted.

There are still some "why did/didn't they" questions. It seems the handover from ETCS to AFSA was 4 km back from the curve, just before the braking point at 0.5 g. I'm sure ETCS would signal this braking where the restriction is after the handover, but only if the braking starts before it. Why put the boundary there, when braking from straight high-speed line to a low speed curve has to come near the top of any risk assessment?

And some plain puzzles ... e.g. ERTMS say that all AVE lines were switched to level 2 (no lineside signals) in 2012*, whereas this one was opened in 2011 and, if it has no signals, clearly used level 2 from the start.

I also wondered why the old and very wiggly Spanish gauge line from Ourense, that joins the AVE line from the left at the curve, was of the same gauge. It turns out this AVE line was built to 1.668 m and will be converted later! These trains also go through a "drive-thru" gauge-changer near Valladolid, having left Madrid on a (1.435 m) AVE line, and before joining the existing line to Ourense. Spanish rail engineering is indeed unlike our own in many ways.

 (* Correction - I missed that they (UNIFE http://www.ertms.net/media/2434/ertms%20facts%20sheet%205%20-%20ertms%20deployment%20in%20spain.pdf (http://www.ertms.net/media/2434/ertms%20facts%20sheet%205%20-%20ertms%20deployment%20in%20spain.pdf)) say the first was opened in 2011, which may have been this line.)

It seems to be a Level 2 system which I think is in cab signalling I am not sure how much the signalling system can override the drive (anymore than our AWS and TPWS) does now

Likny to ETRMS http://www.ertms.net/ertms/ertms-signalling-levels.aspx (http://www.ertms.net/ertms/ertms-signalling-levels.aspx)


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 27, 2013, 13:17:20
It seems to be a Level 2 system which I think is in cab signalling I am not sure how much the signalling system can override the drive (anymore than our AWS and TPWS) does now

Likny to ETRMS http://www.ertms.net/ertms/ertms-signalling-levels.aspx (http://www.ertms.net/ertms/ertms-signalling-levels.aspx)

There's a longer version at http://www.ertms.net/media/2428/ertms%20facts%20sheet%203%20-%20ertms%20levels.pdf (http://www.ertms.net/media/2428/ertms%20facts%20sheet%203%20-%20ertms%20levels.pdf), where it says this:
Quote
ERTMS level 1 is designed as an add-on to or overlays a conventional line already equipped with lineside signals and train detectors. Communication between the tracks and the train are ensured by dedicated balises (known as ^Eurobalises^) located usually on the trackside adjacent to the lineside signals at required intervals, and connected to the train control centre. Receiving the movement authority through Eurobalises, the ETCS onboard equipment automatically calculates the maximum speed of the train and the next braking point if needed, taking into account the train braking characteristics and the track description data. This information is displayed to the driver through a dedicated screen in the cabin. The speed of the train is continuously supervised by the ETCS onboard equipment.
The main benefits brought by ERTMS Level 1 are interoperability (between projects and countries) and safety, since the train will automatically brake if exceeding the maximum speed allowed under the movement authority.
I presume that last statement goes for levels 2 and 3 as well. But, as I said, the link to the train that applies the brake is not required for signalling, and probably needs a specific interface box, so I could believe it is sometimes absent even with an ETCS level 1 or 2.

So you get a cab display with level 1, but it appears that it does not replace signals, it adds speed advice.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 27, 2013, 13:36:38
Oh, and should have said yes - ETCS level 2 does give in-cab signalling, and in ERTMS level 2 uses GSM-R as its radio link. I note the words say "does not require lineside signals" - but do not spell out how things work for lines with multiple on-board systems. I see that several lines are described (elsewhere) as "level 1/2" - I wonder what that means (possibly more than one kind of mixture?).


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: SandTEngineer on July 27, 2013, 14:38:31
Some further information here: http://elpais.com/elpais/2013/07/25/media/1374703338_483146.html and here: http://elpais.com/elpais/2013/07/26/media/1374872840_505323.html and on the specifics of the signalling system here: http://comofuncionanlostrenes.blogspot.com.es/2012/12/instalaciones-de-seguridad-asfa-digital.html?m=1  In the case of the latter link it is interesting to read the posts well down the document.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: eightf48544 on July 27, 2013, 20:12:23
This seems to be a boundary conditon anomoly.

I thought the point of ERTMS level 2 and above is that it eliminates lineside signals giving the train a max speed for any point on the line, with the ability to slow/stop the train if the authorised speed is exceeded. Thus I would have expected that either the ERTMS would have given a slow speed coming off the new line or the old system to have a restricted aspect signal  before the bend which presumably the driver could overule. Similar to approach control at junctions as used in the UK.

We have had problems with curves Morpeth comes to mind.

The lessons to be learnt is that boundary conditons must be carefully thought through to avoid such anomoies a lesson for the GWML resignallers.

There was apprently a SPAD on the first siganl out of Marylebone which is ATP fitted. Unfortunately ATP requires to pass two signals before it knows where it is. 


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Chris from Nailsea on July 28, 2013, 23:37:16
A further update, from the BBC (http://www.bbc.co.uk/news/world-europe-23480803):

Quote
Spain train driver Garzon questioned by judge

(http://news.bbcimg.co.uk/media/images/68994000/jpg/_68994967_018795981-1.jpg)
Francisco Jose Garzon Amo was taken to the courthouse from a police station

The driver of a train that crashed near the Spanish city of Santiago de Compostela, killing 79 people, has been questioned by a judge.

Francisco Jose Garzon Amo was detained on suspicion of reckless homicide after the accident. He is suspected of driving too fast on a bend.

Spanish media says Mr Garzon has been charged but allowed to leave the court. The judge has retained his passport, according to reports.

The investigation is still believed to be open and the driver will have to face trial at a later date. He will have to report to the judge once a week.

Reports say the train was travelling at more than double the speed limit at the time of the crash.

Mr Garzon, 52, was pictured being escorted away from the wreckage by police, blood pouring from a head injury. He left hospital on Saturday and was immediately taken to the central police station in Santiago. He had refused to make a statement or answer questions until now.

Spanish newspaper El Pais said Mr Garzon had admitted to "recklessness" in court. The judge reportedly said Mr Garzon was free to leave the court but was banned from driving trains.

On Sunday, an eyewitness to the disaster told the BBC that he had overheard the driver admitting minutes after the crash that he had been going too fast. Evaristo Iglesias, a resident of Santiago de Compostela, said he heard the driver saying he tried to slow down but "it was too late". Mr Iglesias said the driver, who was shocked and dazed, was repeatedly "saying he wanted to die" rather than see the damage at the scene.

Sunday's court hearing was closed but the judge was expected to decide whether to remand the driver as an official suspect, release him on bail, or free him without charge.

At least 130 people were injured in the accident. It emerged that one of them - identified as an American woman - died on Sunday. Dozens more remain in a critical condition.

All eight carriages of the train - packed with more than 200 passengers - careered off the tracks into a concrete wall as they sped around the curve on the express route between Madrid and the port city of Ferrol on the Galician coast. Leaking diesel burst into flames in some of the carriages.

The train's data recording "black box" is with the judge in charge of the investigation. Officials have so far not said how fast the train was going when it derailed.

Gonzalo Ferre, president of Spanish rail network administrator Adif, said the driver should have started slowing the train 4km (2.5 miles) before the spot where the accident happened.

The president of Spanish train operator Renfe, Julio Gomez Pomar, has said the train had no technical problems. He said the driver had 30 years' experience with the company and had been operating trains on the line for more than a year.

People from several nationalities were among the injured, including five US citizens and one Briton. Two Americans were among the dead.

The crash was one of the worst rail disasters in Spanish history.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: James on July 28, 2013, 23:51:34
Gosh, not good, my prayers go out to all the people who were injured and killed.
Hopefully the authorities get to the bottom of this serious crash, as spain is such a nice country. Get well soon folks :).


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on July 29, 2013, 07:48:34
No mention yet of the presence of the second driver in the cab. He had apparently driven the first half of the route, and also survived the crash.His evidence will be invaluable in establishing the chain of events.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: DidcotPunter on July 29, 2013, 08:43:15
I'm not sure if this has already been referenced but this article from the IRJ confirms that (a) the ETCS controlled section of the line ends 4km from the accident site and (b) the Alvira type train involved in the accident are not (as yet) able to use ETCS on that section of the line. 

http://www.railjournal.com/index.php/europe/etcs-not-operable-on-santiago-crash-train.html

Therefore the train was under full manual control for the complete journey from Ourense to Santiago under the Spanish ASFA system which, like our AWS, monitors acknowledgement of the lineside signals but (unlike TPWS) does not provide any form of speed supervision. So, other than the driver's vigilance, which appears to be lacking in this unfortunate accident, there was no other system in place to prevent trains entering the curve at excessive speed.

As the article states, even trains which are equipped with ETCS are only advised that automated supervision is disabled at the ETCS/ASFA transition point, there is nothing other than the driver's route knowledge to enforce braking prior to the curve.  As we found out at Morpeth on a number of occasions, this appears to be an accident waiting to happen.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 29, 2013, 09:18:36
That is rather surprising, if true - certainly it contradicts some other sources in its details. I assume this still counts as a journalistic source, even if it is of the more reliable technical kind. We will just have to wait for more definitive information, I guess.

On the other hand it does confirm what I was finding already, that saying a line or a train is equipped with system x does not tell you whether and how it is used.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: DidcotPunter on July 29, 2013, 10:25:42
Indeed.  AWS did not prevent the Southall accident (it was isolated on the HST) and ATP didn't prevent the Ladbroke Grove one (fitted and operational on the HST, not fitted to the class 165 Thames Turbo unit involved).


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on July 29, 2013, 10:34:12
Quote
No mention yet of the presence of the second driver in the cab.

The BBC reported he wasn't in the cab, but sat in one of the coaches.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: eightf48544 on July 29, 2013, 11:03:03
Indeed.  AWS did not prevent the Southall accident (it was isolated on the HST) and ATP didn't prevent the Ladbroke Grove one (fitted and operational on the HST, not fitted to the class 165 Thames Turbo unit involved).

Don't forget that at Southall the ATP was also out of use as well.

As stuving puts it.

On the other hand it does confirm what I was finding already, that saying a line or a train is equipped with system x does not tell you whether and how it is used.

This crash should make European Railway authorites more aware of the the problems of boundary conditions between old and new sytems and increasingly between software versions of similar systems. Just look at the problems the Belgians and Dutch have had around the boundary point on the High Speed line with different software versions of ERTMS 2 on either side of the border.

Thi will start to become a problem in this country as ERTMS evolves how will Cambrian ERTMS Fitted 158s interface with what will undoubtably be a more modern version when installed between Shrewsbury and Birmingham?

It's not the same as an AWS TPWS fitted unit working on a line without AWS or TPWS if a line is Level 2 and above with no linside signals then all stock using the line must be able to interface with the system whatever software version is in use.

Do you stick with the software version installed on the first line or do you take what are hopefully safety/performance advances in later software version for the next instalaltion? So do you upgrade the first system to new the version or do you upgrade the trains to read both (multiple?) versions (the SNCB/NS problem) or do you end up with increasing isolated train fleets confined to one route?   

You can liken it to having trains equipped with Windows 3, XP, Vista, 7 and 8 at the same time.

Not an easy problem.



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on July 30, 2013, 13:35:12
In the UK speed limits are strictly enforced with drivers at risk of dismissal for all but the most trivial breaches.
This is however fairly recent, I can remember trains routinely exceeding speed limits, was there not a "140 club" years ago of those HST drivers who had reached 140 MPH.


I'm not sure that's true Broadgage.  I was around when HST's came in on the Western region in1976, and I recall they all had speed limiters either from the outset of public service runs or very soon after which prevented them doing more than about 130 mph.  It maybe that early driver training runs etc pre-dated the speed limiters. 

I do remember doing 110 mph behind a Class 50 between Didcot and Reading: unlike Class 47's, which ran out of power above about 80-85 mph, Class 50's could really go!




AFAIK the HSTs did not have speed limiters originaly, they were fitted later due to concerns about "over enthuisiasm"


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: bobm on July 30, 2013, 17:40:30
BBC are reporting the train driver was on the phone to members of railway staff at the time of the derailment.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on July 30, 2013, 17:49:33
... and French TV that he was looking at a plan or map. Not that these are exclusive.

I wonder where these reports come from. Some are attributed to "tribunal", so does that mean this kind of evidence is in effect read into a public record as they go along? Otherwise, one would expect the judge-led investigation to be strictly confidential - in theory.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: onthecushions on July 30, 2013, 21:02:50

It struck me that the Eastern approach to Reading (down main) also had a 125mph limit into (old) platform 4, limit 50mph.

IIRC this was in recent years always approach controlled, usually with single yellow aspect and time in section. I believe that the criterion was line speed above 75mph and more than 2/3 speed reduction.

The Morpeth curve already mentioned seems to have had 5 smashes, three of which were down to over-speeding, (in 1969, 1984 and 1994). At least one had a distracted driver.

Sadness

OTC


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Chris from Nailsea on July 30, 2013, 21:34:22
More details, from the BBC (http://www.bbc.co.uk/news/world-europe-23507348):

Quote
Spain train driver 'on phone' at time of deadly crash

The train driver in last week's crash in Spain was talking on the phone when it derailed, investigators say.

The train was travelling at 153km/h (95mph) at the time, investigators at the Court of Justice of Galicia said.

Francisco Jose Garzon Amo was speaking to members of staff at the state-owned railway company, Renfe, they added.

Crash investigators had opened the train's "black-box" data recorder to find the cause of the crash, which left 79 people dead.

Moments before the accident the train was travelling at a speed of 192km/h (119mph), the court said in a statement.

Investigators say the brakes were activated shortly before the crash. The speed limit on the sharp bend where the train derailed was set at 80km/h (49mph).

"Minutes before the train came off the tracks he received a call on his work phone to get indications on the route he had to take to get to Ferrol. From the content of the conversation and background noise it seems that the driver consulted a map or paper document," a court statement said.

Mr Garzon is suspected of reckless homicide, but he has not yet been formally charged. He was released from custody in Santiago de Compostela, where the crash occurred, on Sunday but remains under court supervision. He must appear before a court once a week and was not allowed to leave Spain without permission. His passport has been surrendered to the judge and his licence to drive a train has been suspended.

Under Spanish law, his legal status is that he is suspected of being involved in 79 counts of reckless homicide but has not been formally charged. But officials said he had admitted negligence by being careless when rounding a bend too fast.

All eight carriages of the train careered off the tracks into a concrete wall as they sped around the curve on the express route between Madrid and the port city of Ferrol on the Galician coast.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on August 01, 2013, 08:12:25
This English report from El Pais http://elpais.com/elpais/2013/07/31/inenglish/1375288407_411161.html (http://elpais.com/elpais/2013/07/31/inenglish/1375288407_411161.html) refers to the phone call the driver was making when he missed his braking point:

Quote
Antonio Mart^n told EL PA^S that he called driver Francisco Jos^ Garz^n on the corporate phone to give him instructions on how to arrive at Pontedeume in A Coru^a. The call was made as Garz^n entered the sharp A Grandeira curve in Santiago's Angrois neighborhood at double the speed limit for the stretch of track.

Mart^n said the reason he made the call was to make it easier for a family with children who were traveling on the train to get off. The supervisor told police that he was in carriage number three and was accompanied by a rail security officer.

Renfe regulations prohibit anyone from calling the drivers of a train except for emergency purposes while they are operating a rail service.


Martin is described variously as a RENFE controller or supervisor, but where he fits into the organisation is not clear. The bit about "making it easier" is explained in the original as a choice between paths into the station; but there is a RENFE quote making the obvious point that neither driver nor supervisor had any control over this.

El Pais is also credited with releasing an audio tape of part of Garz^n's interview with the judge, which been played on TV news. Now I know he has not been formally charged, but I still find this degree of openness very hard to square with his rights if and when he is. 


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: broadgage on August 03, 2013, 08:08:51
Both openness, and keeping things confidential have their merits.

In the UK, criminal prosecutions are normally held in open court, anyone including the press, may make use of the public gallery and report as to whom said what.
Inquiries into serious accidents are sometimes held in view of the public via either the coroners court, or a public inquiry.

Other inquiries, especially if potentially leading to disciplinary action against an individual are normally private.

It would seem that the Spanish approach favours more openness than the UK, this may or may not be a good thing, but should not be criticised for being simply different to the UK approach.
There is very considerable interest in this awful accident and the causes thereof, and in my view openness as to the on-going inquiries and evidence revealed is a good thing, it will certainly reduce the amount of ill informed speculation and rumour.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on August 03, 2013, 11:39:08
There's some further details from El Pa^s in English: http://elpais.com/elpais/2013/08/02/inenglish/1375456623_554470.html (http://elpais.com/elpais/2013/08/02/inenglish/1375456623_554470.html)
In part this says:
Quote
Garz^n, who was going at twice the speed limit, heard an automatic signal alerting the driver that he was approaching the A Grandeira curve, where the crash occurred, while he was talking on the phone, according to EFE, which obtained a copy of a police summary report on the black boxes.

The train, which was traveling from Madrid to Ferrol, derailed at 8.41pm while it was speeding at 179km/h. Some four second later the driver threw the emergency brake, which dropped the speed to 153km/h, but the 13 rail cars had already begun to jump the tracks.

There is also a much longer item in Spanish, which despite its technical content translates to make some sense (at least in Chrome): http://politica.elpais.com/politica/2013/08/02/actualidad/1375462076_167730.html (http://politica.elpais.com/politica/2013/08/02/actualidad/1375462076_167730.html).

If I have got this right, it says that the ASFA protection systems always had the capability to apply emergency braking (presumably to a halt) when a track speed limit is exceeded, on all equipped trains. For some reason this had never been seen as worth doing, and even now it takes a crash programme to implement it at specific high-risk locations. I presume this is because the ASFA balises and warning signs are not there, or not in the right places.

For the Angrois curve they are doing it belt and braces, with three successive speed traps ending at 30 km/hr. How this fits with the first report of a (speed**) alarm, and in particular its timing, is not clear from the rather garbled text. I found a longer report that gives two different times and positions for the brake application, so the confusion is not just in this translation.

(PS: ** I've re-read the second piece, and it refers to an audible announcement of the next signal's identifier and its being clear - i.e. a reminder of where he has reached, but nothing specifically about the speed limit.)


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on August 03, 2013, 12:59:37
Both openness, and keeping things confidential have their merits.

In the UK, criminal prosecutions are normally held in open court, anyone including the press, may make use of the public gallery and report as to whom said what.
Inquiries into serious accidents are sometimes held in view of the public via either the coroners court, or a public inquiry.

Other inquiries, especially if potentially leading to disciplinary action against an individual are normally private.

It would seem that the Spanish approach favours more openness than the UK, this may or may not be a good thing, but should not be criticised for being simply different to the UK approach.
There is very considerable interest in this awful accident and the causes thereof, and in my view openness as to the on-going inquiries and evidence revealed is a good thing, it will certainly reduce the amount of ill informed speculation and rumour.

I agree with all of that - I was really only commenting on the release of part of the audio recording of the driver's interview with the judge. Releasing facts about the accident is one thing, but the tape did seem to me to go too far (though I imagine a British lawyer would deny that any fact is so objective as not to be prejudicial).

I wasn't making a comparison with the British situation. In fact, I did initially jump to the conclusion that the rules would be like France, as the system is also based on an examining judge leading a team of judicial police. In France such investigators are bound by the principle of secret d'instruction so you don't get much released officially. Mind you the leaks to the media are routine and often very detailed, and leakers are only pursued in highly political cases. As journalists' sources are also protected by law, we have seen a farcical situation where one judge is investigating a leak while another is investigating the first one for spying on or raiding a newspaper.

That background has a side effect that the French have been discussing whether to scrap this secrecy, and why they have it in theory. The reason they give is roughly the same as used to justify our sub judice rules: that publicity, always selective, would prejudice a jury.

Now the driver is described as "not formally charged", but clearly he is under investigation for specific crimes, and there may be no step corresponding to a charge in our system. I suppose that in Spain any trial may not involve a jury, which would remove this concern - at least if you buy the theory that a judge could never be prejudiced or swayed by what's in the press...

Actually, I am not sure the tape was officially released - I have only ever seen it credited to El Pa^s. I imagine that press freedom and sources are well-protected in Spain as part of the post-Franco sweeping away of anything that looked dictatorial. 


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on August 22, 2013, 10:18:56
 
Rail Professional (@RailProMag)

21/08/2013 15:02
Spanish train crash investigation - judge in charge has presented preliminary charges against state-run rail infrastructure company, Adif.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on August 22, 2013, 22:50:55
El Pa^s (http://elpais.com/elpais/2013/08/20/inenglish/1377008922_780191.html (http://elpais.com/elpais/2013/08/20/inenglish/1377008922_780191.html)) puts it a bit differently, more like a subpoena:
Quote
The judge investigating the train accident that killed 79 people near Santiago de Compostela on July 24 believes that Adif, the state-owned railway manager, may have some responsibility in a tragic event that has so far been blamed on the driver.

Although he stated that the direct cause of the accident was the excessive speed of the train as it entered a sharp curve, Judge Luis Al^ez now wants to question the Adif employee in charge of safety for the stretch of track between Ourense and Santiago. The date of the court statement has not been set yet as Adif has yet to identify the individual who held this responsibility.

They also report (http://elpais.com/elpais/2013/08/22/inenglish/1377198453_943657.html (http://elpais.com/elpais/2013/08/22/inenglish/1377198453_943657.html)) an outbreak of finger-pointing among the politicians, based on late changes made (I think to the signalling, but this is not explained) so as to allow the line to be opened at the time of the last general election.



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: ChrisB on September 06, 2013, 14:06:59
From the BBC (http://www.bbc.co.uk/news/world-europe-23982566#)

Quote
A recording has emerged in Spanish media of a phone call made by a train driver moments after his train derailed in northern Spain, killing 79 people.

Francisco Jose Garzon is heard telling a colleague he was travelling at 190km/h (118 mph) instead of 80km/h and became distracted.

He also said he had previously complained that the bend, where the accident happened, was "inhuman".

The driver and the state-owned railway firm Renfe are on trial over the crash.

Magistrate Luis Alaez has charged Mr Garzon with "79 counts of homicide and numerous offences of bodily harm committed through professional recklessness". The driver is not in jail but remains under court supervision.

The accident, which happened during the evening on 24 July near the Galician city of Santiago de Compostela, is one of the worst rail disasters in Spanish history.

All eight carriages of the train careered off the tracks into a concrete wall as they sped around the curve on the express route between Madrid and the port city of Ferrol on the Galician coast.

Some 170 people were wounded in the crash.

'Poor passengers'
 
El Pais newspaper obtained a recording of the phone call Mr Garzon made to activate the emergency protocol after the Alvia train smashed into the wall, caught fire, and derailed on 24 July.

"There must be many injured, [the train] has turned over, I can't get out of the cabin," he is heard telling a colleague at Madrid's central station.

During the conversation, Mr Garzon repeatedly says "poor passengers", adding: "I hope no-one has died."

He also admitted going too fast at the time of the crash.

"I got distracted and I [was meant] to be going at 80, but I was going at 190," Mr Garzon said.

Wreckage of the train near Santiago de Compostela (27 July) The train was said to be travelling at more than twice the speed limit
"I had already mentioned to the safety people that this [curve] was dangerous, that one day something like this could happen."

Judicial authorities earlier said the train was travelling at 192km/h (119mph) on the bend where it derailed.

Crash investigators opened the train's "black-box" data recorder to find the cause of the crash.

Meanwhile, another recording has emerged of the driver's pre-trial questioning, the BBC's Tom Burridge, in Madrid, reports.

In the recording, Mr Garzon is heard giving evidence about a phone-call he received from a train conductor moments before the crash, in which they discussed which platform they would pull into.

The driver told the court he lost a sense of where the train was during the call. By the time he had engaged the train's electric and pneumatic brakes, it was too late, Mr Garzon said.

The investigation into the crash will also consider why there was no automatic braking system on the curve in question, our correspondent reports.

The safety mechanism has since been installed at the scene of the accident.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on September 06, 2013, 15:22:19
From the BBC (http://www.bbc.co.uk/news/world-europe-23982566#)

Quote

The safety mechanism has since been installed at the scene of the accident.


Stable door bolted? In the forthcoming proceedings, this detail will be seized upon by all sides to make different points.

Mod Note: Edited to fix quote


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on September 06, 2013, 17:43:51
From the BBC (http://www.bbc.co.uk/news/world-europe-23982566#)
Quote
The safety mechanism has since been installed at the scene of the accident.
Stable door bolted? In the forthcoming proceedings, this detail will be seized upon by all sides to make different points.
Mod Note: Edited to fix quote

And so it has. The emergency installation of ASFA balises to support automatic braking was reported last month -
Quote from: El Pa^s, translation by Google
In Angrois curve line Ourense-Santiago where Alvia derailed, the maximum speed is limited to 30 kilometers per hour. Until now, the limit was 80. Also operating as the new automatic braking system installed in the area, which starts four miles before the accident.

ADIF technicians have placed three beacons ASFA system with staggered speed limitations. The first (accompanied by a poster installed in the track) is at km 79/769, and limits the speed to 160 km / hour. Another beacon placed at km 81/669 (about three miles before the crash), with its accompanying poster, limits the speed to 30 km / hour, and the latter, in turn, is protected by another previous mark (called notice), approximately 300 meters, which limits the speed to 60 km / hour. If the train exceeds the speed limit, the ASFA system will trip and automatically brake the train, avoiding accidents such as occurred on July 24.
and all sides have indeed been sharpening every pointy thing they can find.

I was a bit surprised the "escaped" recordings made the news - they add little to what we thought we knew already. On the other hand, there is a new report from El Pa^s in English http://elpais.com/elpais/2013/09/06/inenglish/1378468502_039832.html (http://elpais.com/elpais/2013/09/06/inenglish/1378468502_039832.html) which is new. It reports that the black box shows the "automatic brake" (driver's safety device) being applied twice after leaving Orense, in one case slowing from 110 to 48 km/hr. That raises two questions: what was the driver doing that stopped him cancelling the warning sooner, and why did none of the passengers say anything about it?



Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: Chris from Nailsea on November 05, 2013, 22:32:14
From the Belfast Telegraph (http://www.belfasttelegraph.co.uk/news/world-news/train-crash-driver-now-only-suspect-29729105.html):

Quote
Train crash driver now only suspect

(http://cdn3.belfasttelegraph.co.uk/news/world-news/article29729104.ece/ALTERNATES/h342/PANews+BT_e60e0184-5152-492b-acd3-53f38d81c542_I1.jpg)
79 people died in the train crash (AP)

The man who was driving the train which was involved in a crash that killed 79 people in Spain is the only person likely to face trial after a court dropped its investigation of 22 officials from rail infrastructure firm Adif.

A statement from the court said there was nothing to indicate that the officials could be considered suspects for having let the train run on the stretch of track near Santiago where the crash happened July 24.

The driver has admitted from the beginning that he was going too fast when the crash occurred and has been provisionally charged with multiple counts of negligent homicide.

The Adif officials included the company's three most recent presidents, board members and managers in charge of safety.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on November 26, 2014, 00:10:23
I find this news item (http://www.dw.de/siemens-thales-to-upgrade-spanish-railway-safety/a-18083592) puzzling.
Quote
Siemens, Thales to upgrade Spanish railway safety

German engineering giant Siemens and French industrial group Thales have been chosen to upgrade safety features, control systems and signals on Spain's high-speed Olmedo to Ourense track.

French and German industrial giants Thales and Siemens said Monday they had won a joint contract worth 510 million euros to revamp safety systems on a high-speed train line in Spain. The consortium was 55-percent owned by Thales with the remaining 45 percent held by Siemens.

Wide ranging upgrade
Spanish infrastructure admistrator ADIF issued the contract to modernize the control, signalling and safety equipment on the roughly 340-kilometre (211-mile) section of the high-speed line between Olmedo and Ourense in northern Spain. It includes installation of the automatic train protection and control system, telecommunication and traffic control systems, as well as system maintenance for 20 years.

Safety improvements
To improve passenger safety, Siemens will equip the high speed line with train control system ASFA (Automatic Braking and Announcement of Signals) and central control technology.
 
At least 77 dead in Spain train crash
A high-speed derailment on another section of this high-speed line in July 2013 caused 79 deaths on the outskirts of the northwestern city of Santiago de Compostela, Spain's deadliest train accident since 1944.
At 2,600 route kilometers, the Spanish high-speed railway network is the largest in Europe.
bew/uhe (AFP, Siemens)

As far as I can see, this is a new line - the train that crashed last year had to use the old line from Olmedo to Ourense. So why does this piece (and others) say they are upgrading it? My recollection is that it was the on-board systems that were lacking, not those on the already opened high-speed line.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: eightf48544 on November 26, 2014, 11:04:40
As I understand it the crash was at the junction of the new and old lines and that there was no Balaise to warn the driver that he was coming off the high speed line and faced a drastic speed restriction.

I believe this contarct might be to provide these interfaces where high speed lines run onto old lines without full ETCS.

 


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: stuving on November 26, 2014, 12:30:00
Well, actually it is (surprise) sloppy reporting again. Here is a company press release (https://www.thalesgroup.com/en/worldwide/transportation/press-release/spain-thales-and-siemens-provide-rail-safety-and-traffic) which makes it clear that this is all new line, being fitted out just this once.
Quote
Thales is to install the ERTMS level 2 automatic train protection system, wayside LED light signals, axle counters for safe train detection, wheel sensors and landline telecommunications systems. Thales will also be responsible for installing new state-of-the-art electronic interlockings at several stations on the Medina del Campo-Zamora-Ourense conventional line affected by the work on the high-speed line.

The company will also provide all GSM-R mobile communications systems, power supply for the facilities, auxiliary detection systems, equipment buildings and auxiliary building work.

Siemens, for its part, is to install its safety solution based on electronic interlockings and associated technologies, with the ASFA system, centralised traffic control, supply of balises, track circuits, video surveillance systems and access control.

This 331 km section will benefit from ERTMS level 2 standard allowing a maximum speed of 350 km/h and reducing the journey to 2 hours. In 2018, it will provide a high-speed railway link between Ourense in Galicia and Olmedo near Valladolid.

The Madrid-Valladolid section came into service in December 2007, forming the first leg of the Madrid-Galicia high-speed line, and in December 2011 passenger operations began on the Ourense-Santiago de Compostela-A Coru^a section. The Olmedo-Ourense section will complete this Spain^s main high-speed corridors ^ the North-Northwest line ^ and will link the regions of Galicia, Asturias, Cantabria, Castilla Le^n and Madrid.
The Siemens version (http://www.siemens.com/press/pi/PR2014110068MOEN) says much the same, though it appears to have been translated by a robot.

What is a lot less obvious is why they are using two different companies' interlockings, and track circuits as well as axle counters on the new line (some kit goes on the old one too).

As I recall, there was a crash programme to fit extra train protection boxes to the relevant bits of track.


Title: Re: Terrible accident at Santiago de Compostela, northern Spain - 24 July 2013
Post by: TonyK on November 26, 2014, 21:29:59
I feel sorry for the driver. I also feel sorry for the families of those who doed, and for those maimed by this accident. The driver clearly did not set out to cause the accident, and there are reasons to think that he was not the sole architect of the misfortune. He is being strung out to dry. As a driver of a car, I would be mortified to be blamed for a single loss of life, let alone the carnage here. The truth may tell here, but I feel that the system may be as much ro blame as the operator.



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