Joseph_Locke
Established Member
That is a lot higher over the OLE than the M61 bridge
As in Alan Baxter's excellent guide:
I'm not convinced the GWEP one is OK as the bottom 1.5m isn't imperforate?
That is a lot higher over the OLE than the M61 bridge
So are we assuming the Buckshaw - Salford Crescent section isn’t energised because of the M61 overbridge issue?
This would be truly stunning if a priority government project (Preston-Manchester electrification) is further delayed due to a government agency (Highways Agency) dragging their feet on remedial works on the M61!
But it wouldn’t surprise me.
So are we assuming the Buckshaw - Salford Crescent section isn’t energised because of the M61 overbridge issue?
This would be truly stunning if a priority government project (Preston-Manchester electrification) is further delayed due to a government agency (Highways Agency) dragging their feet on remedial works on the M61!
But it wouldn’t surprise me.
OHLE doesn't increase the risk of a driver falling asleep and driving off the motorway. Both the railway and motorway have been there for decades and all such bridges were assessed following the Great Heck incident.probably more worried about someone doing a Gary Hart
The M61 bridge isn't the only thing stopping energisation, I have sent a photo to Dave re. work to be carried out up to 28th November. These notices are on the access gates along the track.
Several of wrinkleys shots show the wires being supported by the bridge.
So what are the rules on this? Surely that can cut down on steelwork needed.
Several of wrinkleys shots show the wires being supported by the bridge.
So what are the rules on this? Surely that can cut down on steelwork needed.
Surely the rules are that there are no rules against it provided the specified electrical clearance is maintained. Why should there be any rules against it?
After all, in a tunnel, the wires are supported from the roof all the way.
Why? The fibreglass tube insulators shown (eg B502m) are part of the standard range, and have been used for years. The fixing brackets themselves are conductive.It requires the use of non-conductive components, which may be awkward to come by.
Why? The fibreglass tube insulators shown (eg B502m) are part of the standard range, and have been used for years. The fixing brackets themselves are conductive.
But if the mechanical clearance between live parts and bridge get lower than the distance a fault voltage can jump (so a voltage over 30kVAC) then there is a risk that the supporting bridge goes live too, albeit briefly. Without going to "devices" and funny paint this is about 100mm.Exactly this, and all the non live parts are bonded to earth
That’s all fairly obvious but doesn’t change the earlier point being made that the components themselves might be ‘awkward to come by’...But if the mechanical clearance between live parts and bridge get lower than the distance a fault voltage can jump (so a voltage over 30kVAC) then there is a risk that the supporting bridge goes live too, albeit briefly. Without going to "devices" and funny paint this is about 100mm.
The copper strips fitted to some of the bridges round Bolton and to intercept this flashover if it happens, but can't be used everywhere.
Noticed this on http://mario.lancashire.gov.uk/roadworks/bulletin.aspx?district=Chorley
Without going back up thread I am not sure if this has been mentioned?
Roadname Railway Road, Adlington
Work Status In Progress
Restrictions Two-way signals
Description Increasing the height of the parapets of the railway bridge to comply with office of road and rail standards for electrified railways. 22:00 - 06:00 (friday nights excepted) and 07:30 - 17:30 each day. Traffic management to be in place continuously to allow day and night works. While operatives are working on site a bankman will be allocated to safely cross over pedestrians.
Dates 20/10/2018 - 25/11/2018
Operator Network Rail -Promoters National
Location At The Railway Bridge (Road Over Rail)
Potential testing paths showing for early am Friday 30th November, with a unit from Edge Hill Depot running these paths. Appears to be very similar to last week's cancelled runs.
It seems to be the same unit based on timings/platforms... showing as 319, then Sprinter, then 100mph DMU! So literally anything could run!
- 5Z60 http://www.realtimetrains.co.uk/train/S50050/2018/11/29/advanced
- 5Z61 http://www.realtimetrains.co.uk/train/S50051/2018/11/29/advanced
- 5Z62 http://www.realtimetrains.co.uk/train/S50052/2018/11/30/advanced
(And yes I'm aware timing load≠booked traction, but it does seem odd that someone has gone to the effort to book the traction as 3 different timing loads).
last minute blockade
https://twitter.com/TheGNRP/status/1063425111661920256
With more to come, seemingly ("under discussion").
I am not a Grayling fan but I totally understand his frustration and cancelling of electrification schemes. Very frustrating indeed.