03-07-2011, 10:57 AM
(This post was last modified: 12-03-2018, 10:18 PM by PJW.
Edit Reason: replacing missing WORD by pdf
)
Some info re London Underground, particularly relating to the Ground Lock and how it is added to the standard Network Rail clamplock, but also including other info re the setting and locking of points from an LU perspective.
(08-02-2011, 01:27 AM)Saraswathi Wrote: Hi,
Q1) Can anyone explain the types of point machines used on the main line and underground of UK, when & why?
Q2) Occassions where we use trailable, non-trailable and High thrust point machines?
Q3) What is the difference between Facing Point Lock (FPL) and Ground Lock (GL) and when do we adopt them?
PJW