Update on HS2 activity from tomorrow

This Sunday – 3rd Party works on Harvil Road (2-Way Traffic Lights) – Sun 26/05 from 9.30am to 3.30pm

There are planned works by Openreach this Sunday 26/05 between 9.30am and 3.30pm that will involve use of 2-Way Temporary Traffic Lights on Harvil Road between the junctions of Swakeleys Road and Highfield Drive.

This Week Coming – Newyears Green Lane – Road Closure for removal of Conveyor  

·         Tue 28/05 to Sat 01/06 (5 days during School Half-Term Holidays)

·         Works are to remove the Conveyor that currently crosses the road between the HS2 Sites

·         The works are scheduled to take place over 5 days as contingency built-in as they are weather dependant (a Crane will be used to remove the sections of the Conveyor piece by piece)

·         If the weather is good then it is hoped the Conveyor can be removed quicker than the scheduled 5 days and the road reopened sooner 

Increased TBM Segment deliveries by Lorry into West Ruislip Portal – until 31/05  

Deliveries of TBM Segments by Railway have now resumed following the issue with the Rail Siding recently. However, due to Network Rail restrictions on the length of the Train carrying the TBM Segments into West Ruislip Portal HS2/SCS will continue to transport TBM Segments by Lorry into West Ruislip over a 24 hour period 7 days a week currently until 31/05 while they build up a surplus of TBM Segments in the Segment Yard. 

As previously advised, while LBH have allowed unrestricted numbers of Lorries carrying TBM Segments over a short-term period the logistical issues faced by the Haulier mean we do not expect to see more than 30 TBM Segment Lorries each day. While LBH have also allowed these deliveries over a 24 hour period 7 days a week timeframe, we do not expect many deliveries to take place outside of the Core Working Hours (Mon to Fri 8am to 6pm & Sat 8am to 1pm).

TBM Segment Delivery to the Railway Siding at West Ruislip Portal 

The current agreement with Network Rail (updated May 2024) will be for one train to arrive at West Ruislip per night delivering 12 Rings, each comprising of 7 Segments. The locomotive will then divide the train into two parts and shunt them into the Siding. The locomotive will then shut down while the gantry crane unloads the Segments, and the locomotive will restart at around 6am and shunt the train back into one piece prior to departure at around 7am. The volume of rail traffic on the Chiltern Line through West Ruislip means that the train can only deliver Segments at night so the train should arrive at West Ruislip after 11pm.  

It is hoped that by the 31/05 the longer Train will be allowed to deliver the original 20 Rings / 140 Segments up to 5 nights a week as before.

SCS Noise Barrier Testing near Breakspear Road South – 03/06 to 27/10 

There will be Noise Barrier testing from early June to the end of October for 24 hours a day, 7 days a week within the HS2/SCS Site to the west of the entrance off Breakspear Road South (please note this was originally scheduled to start on 28/05 but has a short delay).

A temporary embankment has been constructed in the area where Noise Barriers have been installed and the structural integrity will be tested. The scope of the testing is to confirm that the pile foundation and the structure will not have any significant changes due to Trains passing the Noise Barrier.

The anticipated level of noise impact is expected to be minimal and will include the use of a generator which will power the instrument that will simulate the movement of the trains passing (the generator will be covered in acoustic barriers to minimise the noise). The Trains using the HS2 Railway will not likely stop at night so the 24/7 testing is critical to simulate actual stress and strain on the Noise Barrier similar to the operational requirements and in reducing the duration of the test. This is fundamental to assuring Noise Barrier compliance.