Crossrail Surface Works: Stockley Flyover CEEQUAL

Crossrail Surface Works: Stockley Flyover

Crossrail Surface Works: Stockley Flyover | CEEQUAL

CEEQUAL Excellent (81.7%) – Whole Project Award
Version 4, June 2017 | London, England, UK

ClientNetwork Rail and Crossrail Ltd
DesignerJacobs
ContractorCarillion
Assessors: Niall Gibbons (Network Rail), Andrew Johnson (Carillion), Manson Baker (Baker)

Project Summary

Stockley Flyover is a £90 million Crossrail Project and after number of years of construction is almost complete. The objective of this civil engineering project was to construct a new flyover to facilitate Crossrail and Heathrow Express services between London and Heathrow Airport, whilst allowing trains to Reading and beyond to pass through the junction unhindered.

For the construction phase of the project, Network Rail, Carillion and Jacobs were responsible for the design, development and delivery of the Flyover. All parties were keen to implement CEEQUAL from the projects incept and thus were successful in achieving a final verification rating of “Excellent”.

 

Crossrail Surface Works: Stockley Flyover | CEEQUAL

Key Challenges and Achievements

Noise

One of the key challenges on the project was the potential impact of noise nuisance to residential and commercial neighbours. Network Rail and Carillion worked collaboratively with the contractor to ensure compliance working under a section 61 consent. Many best practice techniques were established from the outset of the project in order to ensure minimum disturbance to the residential and commercial neighbours.

These best practice measures included:

  • Accurate recording, monitoring and investigation of complaints by both Network Rail and Carillion Environment Managers;
  • Great communication and working relationships developed with the Local Authority and project acoustician where regular update meetings were setup to review consent application, reviewing site progress and monitored data on the project;
  • Shrouding and hoarding set up around piling rigs to mitigate noise impact on neighbouring properties.
  • Regular training undertaken by Carillion project staff to discuss the best, practicable, means of reducing noise onsite during construction works;
  • Identifying high noise generating equipment and procuring less noise producing equipment to reduce levels onsite.

As a result of these measures being implemented the project has been very successful in reducing the number of complaints from commercial and residential neighbours relating to construction noise.

Biodiversity

A major aspect of the early works was to fully assess and then translocate wildlife to suitable receptor sites. The translocation programme resulted in 46 slow worms593 smooth newts and 599 fish being moved to suitable nearby receptor sites. 30 wild orchids were relocated to a similar habitat in north London at the Maple Lodge Nature Reserve courtesy of the Maple Lodge Conservation Society.

The project is also going beyond protecting wildlife from harm through translocation by implementing a biodiversity target of ‘No Net Loss’. This target was agreed by the Directors and indicates the high level of support and importance environmental management and biodiversity carries on the programme. For Stockley Flyover the ‘No Net Loss’ target meant the creation of new compensatory ponds at a nearby sites along with planting of native species.

Energy and Carbon

During the lifecycle of the project, Carillion set out to reduce the carbon footprint of the project by reducing the amount of energy used in construction of the Flyover, welfare onsite and support activites. Carillion implemented a carbon reduction plan on the project which set out specific controls such as:

  • Arrangements with approved suppliers to provide up to date energy efficient machinery and equiptment;
  • Mains electricity to be utilised as a primary source of energy for welfare and static equipment onsite;
  • Mobile site task lighting provided by ‘smart’ battery replenishing generators sets;
  • Lighting for access and in accommodation were fitted with PAR sensors;
  • Implementing site rules to require engines to be shut off when not in use.

A green travel plan was also implemented onsite to minimise energy use from site operatives travelling to and from the site. This promoted ways to encourage staff to use a range of sustainable or less environmentally damaging transport modes, with the emphasis being on reducing singular user private car travel.

Crossrail Surface Works: Stockley Flyover | CEEQUAL

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