EXECUTIVE REPORT
Clean power for Crossrail
Speedy has helped to develop a power generation solution to enable contractors working on the Crossrail project to ensure air quality regulations are met on site.
Work is ongoing on the Crossrail project to develop a 73-mile railway line across London and the Home Counties of Essex, Berkshire and Buckinghamshire. Multinational construction and development company, Skanska, working as part of a joint venture with engineering solutions provider Costain, has won several construction contracts as part of the Crossrail scheme. One of the most challenging is the re-development of London’s Paddington station.
Throughout the project, Crossrail, the company set up to build the line, has focused on minimising emissions both to protect the health and safety of site workers and also to meet contractual guidelines and regulations. With air quality increasingly high on the agenda within urban environments in particular, large contractors working on major construction projects require green, environmentally friendly solutions. When Crossrail specified that it needed two static generator sets, together with an associated diesel particulate filter (DPF) system, to be fitted at Paddington, the Costain-Skanska team turned to Speedy Hire to supply a solution. Speedy has a relationship with Skanska stretching back many years.
Emission standards
The CRT (continuously regenerating trap) SMF (sintered metal filter) DPF is fully accredited under strict test criteria governed by the Energy Saving Trust and other recognised European legislators. It also meets Non-Road Mobile Machinery (NRMM) compliance regulations concerned with emission standards. Currently, NRMM applies to all major development sites in Greater London, and all sites within the Central Activity Zone or Canary Wharf (CAZ/CW). From 1 September 2020, they will apply to all sites in Greater
London. Crossrail was focused on putting the most effective product in place from an emissions perspective, and so it was important that all generators and filters installed at Paddington were able to comply.
As EHN’s March issue reported, Speedy has invested £10m in new generators, fuel tanks and tankers.
Once the green light was given, Speedy supplied a Kohler-SDMO 100kVA and a 200kVA generator as a synchronised package. This allowed the site to save on fuel when power usage was low, with the ability to swap to a bigger generator when the load demanded it. Thus the lead 100kVA machine was selected to have the DPF fitted as it would run most of the time. The process of installing the filter itself was straightforward, and Speedy has now fitted a secondary silencer to ensure full noise levels are well within OE tolerances.
To support the implementation, Speedy is providing a managed service solution which also incorporates generator fuel and support. This has evolved significantly since the initial implementation, and now incorporates full integration with the DPF, the use of telemetry to monitor fuel levels in tanks, and fuel cleaning technology.
The filter is designed to remove over 99% of harmful PM10 particulate matter (black soot) from the exhaust. This brings engines of Tier 3a or earlier up to Tier 3b PM10 compliance. By removing diesel particulates from the air, the filter significantly improves the air quality and overall environment for everyone working on the Crossrail project at Paddington.
Minimal disruption The DPF system has been fitted to the lead 100kVA generator (left). 16
Since the filter system has been in place, the contractor reports that there has been minimal downtime or disruption to the working environment. One of the key benefits is that the filter does not
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