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Hydrogen Trains

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Old 11th Jan 2019, 16:46
  #41 (permalink)  
 
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I could be out of date, but Southern was/is third rail DC and anything with a pantograph would be a dual-voltage job as used on Thameslink where they need overhead AC when north of London. Pantographs are worn folded when not in use, as when running on third rail.
Thameslink is operated by Southern.
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Old 11th Jan 2019, 16:51
  #42 (permalink)  
 
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Yes that's probably where I saw them.
I was suggesting a wider use of these on longer routes where some sections are said to be impractical to electrify due to overhead clearance. Use the third rail in built up areas and switch to overhead in open country. It has to be more efficient than the 19th century concept of lugging tons of fuel about.
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Old 11th Jan 2019, 20:58
  #43 (permalink)  
 
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The ORR is concerned about the safety implications of third rail installations.
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Old 11th Jan 2019, 21:11
  #44 (permalink)  
 
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Hydrogen is a wonderful fuel! Hmmmm. Let's add some other atoms so that it's a liquid at room temperature. Excellent! Ok, now we'll add some more atoms to increase it's stability. Oh no. This process is terribly inefficient. Hey, good news! It's coming out of the ground over here!
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Old 11th Jan 2019, 22:44
  #45 (permalink)  
 
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Originally Posted by Blues&twos View Post
The ORR is concerned about the safety implications of third rail installations.
So what do they propose to do about Southern and the London Underground?
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Old 11th Jan 2019, 23:33
  #46 (permalink)  
 
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Originally Posted by Sallyann1234 View Post
So what do they propose to do about Southern and the London Underground?
Nowt of course. ISTR that when, back in the 80s the Thameslink proposal first started being talked about, some of the engineers suggested that the N. London High Voltage overhead system could be extended to Brighton. The planners did a few 'back-of-the-envelopes' and said, "too expensive. File it." And filed it has remained ever since.
Yes, I guess that third rail supply is less safe - but you still have reports in the Darwin thread of idiots who ponce about on top of trains and do themselves no good at all...
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Old 12th Jan 2019, 10:20
  #47 (permalink)  
 
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I think the ORR were comparing the OLE systems with third rail for new installations
I don't think there can be any doubt third rail carries a higher risk to track workers.

​​​​​​​There was a massive project proposed about a decade ago called the "Electric Spine" (most of which seems to be not happening now) to electrify a south - north series of routes from Southampton. Among these proposals was changing the third rail lines from Southampton -Reading to 25kV OLE. I don't know if that is still on the cards.
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Old 12th Jan 2019, 22:37
  #48 (permalink)  
 
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Originally Posted by Blues&twos View Post
I think the ORR were comparing the OLE systems with third rail for new installations
I don't think there can be any doubt third rail carries a higher risk to track workers.
Of course!

​​​​​​​There was a massive project proposed about a decade ago called the "Electric Spine" (most of which seems to be not happening now) to electrify a south - north series of routes from Southampton. Among these proposals was changing the third rail lines from Southampton -Reading to 25kV OLE. I don't know if that is still on the cards.
Yes, the Electric Spine was supposed to be completed in Control Period 5, ending this year, but has quietly been booted into CP6. The Southampton-Basingstoke was the guinea pig route foe overhead electrification, but the route hasn't even been surveyed yet. Just as well! Network Rail don't have enough engineers or technicians to do the work they've been set, leave alone any new stuff.
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