The Thames Barrier is one of the largest movable flood barriers in the world. The Thames Barrier spans 520 metres across the River Thames near Woolwich, and it protects 125 square kilometres of central London from flooding caused by tidal surges. It has 10 steel gates that can be raised into position across the River Thames. When raised, the main gates stand as high as a 5-storey building and as wide as the opening of Tower Bridge. Each main gate weighs 3,300 tonnes.
The uninterrupted operation of this barrier is vital to the protection of London, as is the safety of the employees that maintain it.
Acoustics Plus was commissioned to determine if the newly installed PA/VA system at the facility met the relevant legislative standards. We undertook noise assessment measurements of both sound pressure level and speech intelligibility using the STI-PA method to assess its performance.