Train Graphic
Great Western Passengers' Forum Great Western Coffee Shop - [home] and [about]
Read about the forum [here].
Register and contribute [here] - it's free.
Correct, not at all, or with caution? - [here]
 tomorrow - First Bath Bus panel
23/01/2019 - Melksham Rail User Group
03/02/2019 - Looe Brush
09/02/2019 - Coffee Shop Constitution
16/02/2019 - Keep this date
25/02/2019 - TransWilts Members Meeting
Random Image
Train Running @GWR Twitter Acronyms/Abbreviations Station Comparator Rail News GWR co. site Site Style 1 2 3 4 Chat on off
January 21, 2019, 05:43:44 pm *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most liked recent subjects
[250] Your privacy / other member's privacy
[63] Bus and train tickets inter availability, 70 years ago
[49] The Coffee Shop - planning ahead
[46] HST Laira, Bristol, Crewkerne and Exeter to Stoke Gifford
[46] Best ticket combo?
[28] Eight Car Voyager Service
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: 1 ... 46 47 [48] 49 50
  Print  
Author Topic: Great Western Main Line electrification - ongoing discussion  (Read 63995 times)
Dispatch Box
Hero Member
*****
Posts: 433


View Profile
« Reply #705 on: January 05, 2019, 01:18:26 pm »

Well this is my first post and it's about a subject I know a little about I thought I'd join in and try to dispel some of the myths surrounding the whole buried cables issue or indeed non issue.
First off, all the available drawings for the Western Route were collated and scanned some years ago, as the odd ones remaining become available then they to are subjected to the same process.
The rules surrounding buried services are laid down in H&S law and all industries incl the railway have to comply. The rules are quite simple really and set out a set of steps which if followed should reduce the risk of damage to any services within the work area.
I'm not going to go into the full details but let's look at a scenario where someone wants to install some equipment which involves excavation.
             RULE 1. UNLESS YOU KNOW OTHERWISE NEVER ASSUME THERE IS NOTHING THERE. ALWAYS FOLLOW RULE 1

Step 1. Obtain where possible drawings showing the services in the area. None available or not up to date go to Step 2
Step 2. Ask the asset owners if they know of any services in the area which may not be on the drawings. If unknown then go to Step 3.
Step 3. Carry out trial holes and fully CAT Scan the area. Please note that not all services show up with a CAT Scanner.
If services/obstructions are found then note and report the issue. In addition use that info to update the records.
Step 4. If the area is clear then carry out your work.

It should be noted that this process is for buried services which on the railway can include lots of things; drainage, cables, culverts, old foundations, old sleepers, rail never recovered, the original foundations for Swindon station etc etc. You can never assume anything when it comes to buried services and even if you had the drawings you MUST always do further investigation work.
There is actually 1 step prior to step 1 above which may be useful: Find an old git with the local knowledge who knows cables and ask him what's there.
I also see above a reference to the Filton Bank Project. All the redundant cables, where possible, have been recovered and any left in the ground are known about and plotted. The plastic ducts you see are temporary protection until the new trough routes are installed.

Hope I haven't waffled on too long for my first post and I'm happy to answer any generic questions about cables on the Railway.

 



I think this is what I put in my post?. Yes I wondered whether the ducts would later be removed.
Logged
Hellzapoppin
Newbie
*
Posts: 3


View Profile
« Reply #706 on: January 05, 2019, 05:29:34 pm »

https://www.youtube.com/watch?v=RSCz-35M9hA

Well I hope I've managed to post this link properly and if so it shows what can happen if you don't follow the rules properly.
The American system of dealing with buried services differs from ours in that the utility owner has to attend site and mark up where their assets are. In the case shown it was known there was a gas line in the area but the owner didn't know exactly where it was. The contractor was told to stand down until further investigations were carried out but as the job was nearly finished and behind schedule the contractor decided to carry on with tragic consequences. Scary stuff.
Logged
Tony (Formerly FT, N!)
Global Moderator
Hero Member
*****
Posts: 4008


I know nothing. Really.


View Profile Email
« Reply #707 on: January 05, 2019, 07:40:36 pm »

Welcome indeed, Hellzapoppin! That link works, and certainly does illustrate the potential for disaster from unknown buried stuff. I'm glad to read that Filton Bank has been properly cleared up, which is entirely appropriate for an engineering project of that size.
Logged

Now, please!
Dispatch Box
Hero Member
*****
Posts: 433


View Profile
« Reply #708 on: January 05, 2019, 09:35:03 pm »

On the little thing in the top left corner of my screen is now blank, reporting no cancellations.
Logged
grahame
Administrator
Hero Member
*****
Posts: 23363



View Profile WWW Email
« Reply #709 on: January 06, 2019, 07:15:29 am »

On the little thing in the top left corner of my screen is now blank, reporting no cancellations.

I hope it still contained a map outline and the roadwork spots?   The map tends to show fewer (or no) cancellations / changes late in the evening or in the early hours when fewer trains are running and fewer expected in the next 6 hours or so.  And in an ideal world, it would always be clear.   But with so many services running, I suspect that it'll be rare for it to be routinely totally clear during the day for a long while yet.
Logged

Coffee Shop Admin, Member of Melksham Rail User Group, on the board of TravelWatch SouthWest and some more things besides
Bmblbzzz
Transport Scholar
Hero Member
******
Posts: 1720


View Profile
« Reply #710 on: January 06, 2019, 12:01:19 pm »

I've just read of a, hopefully very rare, OHLE failure – the line somehow broke and fell on to a train in Krakow central station. No injuries reported. Hopefully we won't see that happening here!
Logged

Day return to Infinity, please.
paul7755
Transport Scholar
Hero Member
******
Posts: 4569


View Profile
« Reply #711 on: January 06, 2019, 01:00:55 pm »

I've just read of a, hopefully very rare, OHLE failure – the line somehow broke and fell on to a train in Krakow central station. No injuries reported. Hopefully we won't see that happening here!
It happened in one of the St Pancras HS1 platforms in a few years ago, there’s a RAIB report about it.

Paul
Logged
Dispatch Box
Hero Member
*****
Posts: 433


View Profile
« Reply #712 on: January 06, 2019, 02:27:04 pm »

I've just read of a, hopefully very rare, OHLE failure – the line somehow broke and fell on to a train in Krakow central station. No injuries reported. Hopefully we won't see that happening here!

Oh! no, Why, was it made of Knicker elastic?
Logged
Thatcham Crossing
Hero Member
*****
Posts: 559


View Profile
« Reply #713 on: January 12, 2019, 09:18:00 am »

Took a 387 for the first time on the B&H yesterday, the 1K11 which is a semi-fast Newbury to Paddington and used to be an HST until very recently.

It went like the clappers between Thatcham and Theale (covered easily in 7 mins) and then sat at Theale for what seemed like a very long 3 minutes.

This could only be because it can easily "beat the timetable" and needed to wait for the advertised departure time.

Felt so much faster than a Turbo (and an HST, in terms of accelaration and deceleration) on this type of run on the B&H  Smiley
Logged
Electric train
Hero Member
*****
Posts: 3054


The future is 25,000 Volts a.c.


View Profile
« Reply #714 on: January 12, 2019, 02:58:32 pm »

Took a 387 for the first time on the B&H yesterday, the 1K11 which is a semi-fast Newbury to Paddington and used to be an HST until very recently.

It went like the clappers between Thatcham and Theale (covered easily in 7 mins) and then sat at Theale for what seemed like a very long 3 minutes.

This could only be because it can easily "beat the timetable" and needed to wait for the advertised departure time.

Felt so much faster than a Turbo (and an HST, in terms of accelaration and deceleration) on this type of run on the B&H  Smiley



Yep, in the current timetable they will be running to the original timings for the slowest of the diesel traction, timings will be adjusted in the future.

387's are quicker off the mark than a 165/6 and 253 and breaking is much much better
Logged

Mark Carne 26 June 2015 - "The challenges of delivering myriad improvement projects while still running a railway seven days a week were simply overwhelming".
GBM
Transport Scholar
Sr. Member
******
Posts: 294


View Profile
« Reply #715 on: January 12, 2019, 03:33:24 pm »


387's are quicker off the mark than a 165/6 and 253 and breaking is much much better
[/quote]
Pedantic alert - really hope not  Grin Grin  (apologies ET)
Logged

Personal opinion only.  Writings not representative of any union, collective, management or employer. (Think that absolves me...........)
Electric train
Hero Member
*****
Posts: 3054


The future is 25,000 Volts a.c.


View Profile
« Reply #716 on: January 12, 2019, 06:08:22 pm »


387's are quicker off the mark than a 165/6 and 253 and breaking is much much better
Pedantic alert - really hope not  Grin Grin  (apologies ET)
[/quote]

Problem being an electrical engineer with circuit breakers  Grin

Oh tidy up the quotes  Roll Eyes  not that I am be pedantic  Grin
Logged

Mark Carne 26 June 2015 - "The challenges of delivering myriad improvement projects while still running a railway seven days a week were simply overwhelming".
SandTEngineer
Transport Scholar
Hero Member
******
Posts: 2633


In a Linemans Hut in the far Southwest


View Profile
« Reply #717 on: January 12, 2019, 08:03:45 pm »

Reported elsewhere that an attempt was made last night (11 January) to steal the contact (or return) wire from an substantial length at Newport.....
« Last Edit: January 12, 2019, 09:48:51 pm by SandTEngineer » Logged

Out of this nettle, Danger, we pluck this flower, Safety.
[Henry IV, Part 1, Act 2, Scene 3]
Dispatch Box
Hero Member
*****
Posts: 433


View Profile
« Reply #718 on: January 12, 2019, 08:06:53 pm »

Reported elsewhere that an attempt was made last night (11 January) to steal the conductor or return wire from a substantial length at Newport.....

Was it live, if was that would have taught them.
« Last Edit: January 15, 2019, 01:58:51 pm by Dispatch Box » Logged
Dispatch Box
Hero Member
*****
Posts: 433


View Profile
« Reply #719 on: January 14, 2019, 09:59:35 pm »

Because we are coming out of Europe now it seems, Are Network Rail going to have to abandon E.R.T.M.S. Also confused as to what it is, but sounds ever so expensive.
Logged
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

 
Pages: 1 ... 46 47 [48] 49 50
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link). Forum hosted by Well House Consultants