Section Gap signs

[Ex LT]

Can anyone help when I worked on the Bakerloo north of Queens Park where there were sub station gaps know as Section Gaps and that is all there was but I have seen a photo (attached) that they now have numbers since being upgraded what does the number mean is it just to identify the gap or something else TIA.

 

[Lewlew]

They’re used to identify the gaps, there is one facing each direction at every gap. They were put in about two years ago (maybe a little less).

I don’t know of any driver that has had to use/quote them. So perhaps they’re more for Pway staff?

 

[Ex LT]

They’re used to identify the gaps, there is one facing each direction at every gap. They were put in about two years ago (maybe a little less).

I don’t know of any driver that has had to use/quote them. So perhaps they’re more for Pway staff?

Thanks I suppose the drivers only need to know that there is a section gap as such I will try to have a look next time I'm up that way see what numbers and the difference to other ones.

 

[Elecman]

I would assume the number refers to the relevant circuit breaker section

 

[jamesst]

They’re used to identify the gaps, there is one facing each direction at every gap. They were put in about two years ago (maybe a little less).

I don’t know of any driver that has had to use/quote them. So perhaps they’re more for Pway staff?

More for Pway staff, drivers just have to know that it's a section gap more than any specific id number.

 

[John Luxton]

Electric railways on Merseyside have always had notices such as these. Back in the 60s/70s they were black lettering with yellow background. Now similar to that shown above.

 

[Ex LT]

They’re used to identify the gaps, there is one facing each direction at every gap. They were put in about two years ago (maybe a little less).

I don’t know of any driver that has had to use/quote them. So perhaps they’re more for Pway staff?

I'm sure unless the procedure is to quote the number the driver would just say where they are and they don't seem to be illuminated.

== Doublepost prevention - post automatically merged: 13 Nov 2021 ==

I would assume the number refers to the relevant circuit breaker section

I think you are right although only good for engineers as drivers only need to know where the gaps are. On LU/TfL these are known as rail gaps but no numbers as far as I know and the drivers would only know which traction current sections are fed well they should.

 

[DeparturesBeck]

The WON refers to them as Isolation Demarcation Boards and states they are to enable track workers to identify conductor rail electrical safety limits. They can be disregarded by drivers. Each board has a unique reference number which corresponds with the electrical section and sub-section isolation limits.

 

[Lewlew]

The WON refers to them as Isolation Demarcation Boards and states they are to enable track workers to identify conductor rail electrical safety limits. They can be disregarded by drivers. Each board has a unique reference number which corresponds with the electrical section and sub-section isolation limits.

Thanks. We don’t have access to the WON on LU even though we run on Network Rail