The Victoria Station Upgrade (VSU) project developed an internal noise management system that has been implemented on the project for “Out of Hours” working and has successfully been in use on the project for over four years.
The busy environment in the VSU project location adds additional constraints on the delivery of the construction works so when the project team reaches a phase of works that requires out of hours working, the team notifies the TWBN environment team, five days in advance of their intention to work.
The project team prepares an Out of Hours permit, copying in the approved works from the Section 61, detailing the intended work methodology, plant that will be in use with decibel levels (at 10m) and percentage on time use.
For works with potential to give rise to vibration, set VDV and PPV limits are monitored via the web based monitoring tool. Mitigation measures are detailed in the permit with responsible personnel, along with their contact details and the Supervisor for the works.
The environment team check the permit with the approved Section 61 and model the resultant noise impact of works and compare them against the Section 61, to ascertain if the resultant noise levels are within the agreed Section 61 noise limits.
If acceptable, the permit is approved and signed off by the Project Director, Section Manager and Environmental Manager. See attached flow diagram for the Out of Hours management process.
The approach has given the site teams essential knowledge and responsibility so the project Foreman, Agents, Engineers and Subcontractors can manage construction noise successfully during major construction works within central London.
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