5.3 On-going issues with points at Heald Green have resulted in multiple
repeat failures over the past 3 Periods and are subject to a Network Rail
review currently underway. Since 24 March 2017, over 2,000 minutes
delay have been attributed to this.
5.4 The junction to and from the Airport is controlled by 3 point ends.Two of
these point ends are the problem switches that operate the switch
diamond layout. This is one of only two of this type of points on the LNW
route, so is a fairly unique and challenging layout. The original issue was
a defective switch on one of the switch diamonds that necessitated the
installation of new switches and crossings for both ends. Since the initial
issue occurred in March, Network Rail has completed significant work on
site and had the points inspected by a number of teams and specialists.
Since reinstallation, variances in track gauge, geometry alignment and
temperature changes have meant that it isnt feasible to set up the points
operating.
5.5 Manchester DU is currently working with its Safety, Technical &
Engineering and National Signals & Crossing Teams, to understand
geometry issues and complete a retrospective design to enable the track
to be installed in the correct position; until the track geometry is corrected
the points equipment cannot be set up and are currently secured in the
reverse position. They have been kept in this position during the day and
released on nights to facilitate possessions and diversions if required. NR
has had engineers on site for much of the last three months to monitor
them and try to reduce disruption if they do fail. Following its most recent
review, a plan is currently being confirmed for completing a fix for this
issue to enable a return to full operation.