400 kV Richborough – Canterbury power line, United Kingdom

Construction of 400 kV line Richborough – Canterbury, United Kingdom

31 Jan 2019
400 kV Richborough – Canterbury power line, United Kingdom

CHALLENGE

The construction of the 400 kV Richborough – Canterbury line was part of the NEMO-link project, an energy link between Belgium and the UK. The construced  400 kV lines connected the existing switchyard at Canterbury to the newly constructed Richborough substation. The contractor for the work was Murphy-Eltel  JV, for whom we worked as a subcontractor for design and resource provision for line work. Within the scope of our activities we participated in installation of 60 power poles on prepared foundations and we carried out installation of electric cables with accessories.

FACTS

Investor: National Grid
Location: Southern England, Kent County
Investment cost: GBP 68 million
Completion: 2019

LINE DETAILS

    • 2 x 400 kV (Sorbus double bundle and OPGW)
    • 20 km route
    • 60 poles (19 strong, 39 through, 2 end)
    • 45 L8 poles and 15 L12 poles

    EFFECT

    We completed all of the planned work for our client (Murphy-Eltel JV) in a very short period of time, i.e. from January to November 2018. Despite the extended lead time for the first phase of the project, the work we did to assemble the poles and install the wires was so accelerated that we finished 3 weeks ahead of schedule. The work was carried out according to a methodology and using equipment typical of British lines (including work from platforms and decks). This was a huge logistical challenge for our brigades due to the distances involved, the movement of materials and heavy equipment, and most importantly the time pressure. At the busiest time, we had about 100 fitters engaged on the line. The developer (National Grid) was very impressed with our mobilization, efficiency and quality of work, while meeting all job safety requirements, which enabled our client Murphy-Eltel JV to complete the project successfully and ahead of schedule.