Kao Park Project (Harlow to Chipping Ongar)

JSM was appointed to design and deliver a new Telecoms network for their client, a major Telecommunications company. JSM delivered this program from conception to fibre installation, including surveys, redesign, construction and testing. This project had to be completed between two fixed dates.

JSM’s team of designers, surveyors and planners collaborated and designed the best feasible route without delays.

The route, approximately 100km long, traversed 7x London Boroughs and Essex County Council. It also crossed a number of structures and land belonging to Canal and River Trust (CRT), Network Rail, LUL and TfL, requiring extensive stakeholder management and negotiations to obtain the required permits and licences to cross their properties and structures.

The route was divided into 4 spans to optimise the programming and delivery of the project. JSM surveyed and reviewed the whole route identifying any opportunity for redesigning the route to reduce the delivery timescales, minimise disruption and/ or avoid difficult structures or properties.

  • Span 1 ran from the Viatel chamber in Chipping Ongar, Essex to Kao Park Data Centre, approx 12.7km route;
  • Span 2 and 3 ran from a newly installed FC2 chamber in Hoddesdon EN11 and travelled via the tow path of the River Lee Navigation Canal to an existing euNetworks chamber in London Hackney E9, approx 38km route;
  • Span 4 ran from Chipping Ongar to East India Dock Road, London, approx 44km route. This span was different from the other three as it was solely fibre cable installation in addition to the building of 27 off network chambers.


Key Project Deliverables

  • Civils – such as trial holes, excavations, backfill reinstatements in verges, footways and carriageways, HDD on spans 1 to 3, installed one new 110mm duct. JSM also built 113 pulling chambers and 65 joint chambers, conducted Traffic Management (TM) including specialist TM; Installation along canal towpaths and temporary fibre installation within the canal;
  • Canal works including duct and cable installation along 27km of tow path along the River Lea Canal, providing and managing works on barges and managing access to towpath on pontoons and managing specialist diving teams;
  • Cable installation – 100km of 432 fibre optic cable on all spans as well as 864f on Span 4;
  • Installation and splicing of 65 joints approximately every 2 kms;
  • Test result packages consisting of end to end testing 1310nm, 1550nm and ILM