MVR Signalbox Operation
HTML-код
- Опубликовано: 14 окт 2024
- Moors Valley Railway operates two fully working signal boxes (Kingsmere East and Kingsmere West) covering the entire length of the line. The boxes contain fully working lever frames and signalling instruments, and all points and signals are fully interlocked.
Good evening, I have not yet understood whether in the United Kingdom those historic manual electric Block instruments were influenced or not by the arrival or transit of trains. Here in Italy, in order to be able to return the "Green light" (I don't know the official term) to the previous station or the previous Block position via the "Consent grant" handle, it was necessary for the train to have arrived complete by passing the appropriate pedal located at downstream of the protection signal (Home signal) of the station. Thank you very much for your availability and collaboration
a train cannot be cleared out of a signalbox's area unless line clear has been obtained from the signal box ahead. the two signalboxes communicate via bell codes, and once the train has been accepted by the signalbox ahead, then that signal box ahead will turn their block instrument to "line clear". This electrically releases the starting signal, and allows the train to travel between the signal boxes.
once the train has passed the starting signal, bell codes are used to tell the signal box in advance: usually it is 2 beats, which means "train entering section". the signal box in advance will acknowledge this, and turn his instrument to "train on line", thus preventing the starting signal to be cleared again.
when the train arrives at the signal box in advance, the signalman MUST sight the tail lamp of the train. This tell him that the whole train has arrived complete, and he can send the "train out of section" bell code to the other signal box. He then turns his block instrument to "normal", and so the process repeats.
If the signalman does not sight the tail lamp, then he must not give train out of section, as this implies the train has split, resulting in part of the train still occupying the section.
I hope this answers your question.
@@j.a.g1291Many thanks for the explanation! "the signalman MUST see the tail lamp of the train": also in Italy, as regards the Cardani type manual block and the FS type manual block. At the beginning of the 1980s, a very serious accident occurred in Calabria: a freight train had split and a train driver closed the tap on the Westinghouse brake on the tail carriage (he had not noticed the lack of the red tail lights). As if this were not enough, the signalman of the next station also did not sight the tail lamps, thus, after the passage of the freight train, he granted electrical consent to the previous station for a passenger train full of travellers, which collided with the vehicles left on the line by the freight train. The accident caused numerous deaths and serious injuries.
"he must not give train out of section" . Clarification: in Italy this is not foreseen since, in order to forward a following train, the previous station must ask for electrical consent. And the station that must grant it cannot do so until the previous train has passed the release pedal located downstream of the home signal with the last axle. In case the station is "disabled" (especially during the night hours), the release of the manual block occurs when the train passes the departure signal (continuity of the block, as in France)
Excellent video thanks for sharing!
The panel in East box is a type of One Control Switch panel. As the push/pull buttons are impossible to source.
Is it OCS or IFS (Individual Function Switch)? I noticed in the video at 0:59, the signaller appears to operate the point switch then pushes the signal route button. That suggests to me that the signal route button does not call or set the point position, as would happen on an OCS panel. However, I accept that on seeing just one brief operation I cannot be certain.