Services

Emergency response

Emergency Response Team

Hesselberg Hydro's versatile and experienced workforce is on permanent stand-by, ready to deal with emergencies anywhere in the United Kingdom.

Greater prevalence of extreme weather associated with climate change has increased the risk of hydraulic structures being exposed to loads for which they were not designed. Calls for emergency work are likely to increase.

We can draw on a variety of materials for use in emergencies.

Lean Sand Asphalt (LSA), especially, provides effective emergency erosion protection:

• Can be mixed in all coating plants
• Can be stored for up to 24 hours
• Easy to place
• Overtopping armour layer can be applied for further protection when weather conditions permit

Project

Marine Lake, The Wirral Peninsular, Cheshire

This important leisure facility for sailors and windsurfers was saved from destruction by Hesselberg Hydro's prompt and determined action.

The marine lake is formed by a 1.6 km bund of sheetpiles and stone fill. It is protected on the seaward side by armour rock, and on the lake side by an open stone asphalt (OSA) revetment. The lake is filled when tides overtop the bund.

In November 1999, a combination of high tides and storms seriously damaged the bund. With the integrity of the whole lake threatened, emergency repair was essential before the next overtopping tide in two weeks.

The Metropolitan Borough of Wirral, soon discovered Heselberg Hydro was the only company in the UK able to design and deliver a practical solution within such a tight time-table.

Applying our expertise, and using our plant and operatives, we provided within two weeks of the initial contact with the client:

• Complete LSA protection of the vulnerable stone
• An armour layer of OSA over the whole area
• Special, heated skips to allow work to continue in bad weather
• A materials engineer who successfully sourced the correct raw materials at very short notice

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