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| Bridgwater Yard GF 21/03/2013 at 23:18 #42509 | |
Underwood
748 posts |
Hello all, Just writing something up for the Nuclear flask DRS operated train (6V74/6M67), and I note in my quail 'Bridgwater Station GF'. Having a quick look on Bristol SimSig I see that setting the route on there is simply setting a route from signal B3. However I am wondering if this is perhaps a simplified operation and perhaps not quite the answer I need. A search on google doesn't seem to provide much, however I did find that DRS mobile shunter's operate the GF here. Is there a proceedure for the ground frame from the main line? I assume the points just beyond signal B3 from the mainline are motorised points, and the GF unlocks the points facing the mainline points..if that makes sense? At a guess I's say the sidings are 'locked out' so to speak and the points are normalized to the headshunt next platform 2, and that's the purpose of the GF? I don't know if it needs unlocked or if there is any interaction between Bristol PSB and the ground frame? Any help in this matter will be appreciated :) Cheers, James. Log in to reply |
| Bridgwater Yard GF 22/03/2013 at 09:50 #42510 | |
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Stephen Fulcher
2078 posts |
I think Bristol was released before SimSig supported ground frames so a fully signalled route was used instead. There are quite a few examples on Bristol where this is the case.
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| Bridgwater Yard GF 22/03/2013 at 11:10 #42514 | |
pedroathome
915 posts |
Would another be the siding next to the up line at Temple Meads, but just without that there at all? and also Lawrence Hill?
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| Bridgwater Yard GF 22/03/2013 at 13:41 #42523 | |
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Stephen Fulcher
2078 posts |
I do not have the time to spare to check every ground frame on the Bristol Panel area, but there are several others as well as Bridgwater. A couple round Temple Meads and Lawrence Hill being among them. I have had a look at the Bridgwater one as this was the original query. There are two releases from Bridgwater Station Ground Frame, one for the Up line and one for the Down line. The main to main crossover requires both releases, whilst the points into the siding (labelled CRL on SimSig) requires just the up release. Looking at the diagrams of the area, it would seem as though the Signaller sets the desired route as normal. This will automatically release the ground frame for the shunter to operate. Once the shunter has the points in the correct position and given the appropriate slot, the signal will clear automatically. The train then proceeds and the shunter and signaller normalise their respective controls. This is a fairly common arrangement for ground frames on E10K interlockings. Log in to reply The following user said thank you: Underwood |
| Bridgwater Yard GF 24/03/2013 at 14:29 #42622 | |
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Underwood
748 posts |
Thank you very much Stephen, just what I was looking for :) Makes sense now. I thought it wasn't in SimSig due to the fact that it was before GF's were simulated hence I asked on here instead. Thank you once again! James. Log in to reply |
| Bridgwater Yard GF 25/03/2013 at 21:25 #42709 | |
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Cardiff Bluebird
31 posts |
There is a Trainman operated GF at Bridgwater, the Trainman completes the circuit with Bristol panel to release the frame and operate the points. There are two GFs at Bristol TM on the UP through to allow access to the middle siding under the trainshed. The names escape me even though I was within 6ft of them today! No.1 and No.2 ring a bell though. The method of release is as per Bridgwater. The frame at Lawrence Hill is also the same as the above. Back to Temple Meads there is also a frame on the loco spurs between P5 & P7, we stable 153s and the occasional 143 in there. CFBB. Log in to reply |
| Bridgwater Yard GF 25/03/2013 at 22:29 #42715 | |
KymriskaDraken
963 posts |
I can't remember much of the detail of the Bridgwater GFs as in my days in the panel I tried to avoid the Weston end  The Sectional Appendix shows just one frame: "Bridgwater Station GF". I think the main to main crossover was a signalled move on the panel (towards an LOS on the UM) and the GF controlled access to and from the sidings. The middle siding GFs at Temple Meads are called "Bristol Middle Siding West GF" and "Bristol Middle Siding East GF". The "Middle Spurs" between 5&7 are odd. One is a normally signalled move, but the other is released by a GF (called "Spur GF"). Log in to reply |
| Bridgwater Yard GF 26/03/2013 at 13:47 #42732 | |
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Stephen Fulcher
2078 posts |
The IRJ plan shows the main-to-main as a ground frame move as well as the lead into the sidings, along with a list of what switch on the frame does what.
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