Norfolk Marine -

ESB Hydroelectric Station Downstream Gates

In summer 2008 Norfolk Marine were commissioned to refurbish ESB’S Cliff Generating stations downstream gates which had not sealed in 25 years in preparation for a major station refit. The contract involved the survey of the gates in situ to allow new seals to be designed then the removal of the 7 gates each weighing between 9 and 10 tons.

Three of the gates were placed into storage; the remaining 4 were transported off site for refurbishment. The steel gates were grit blasted and hot zinc galvanized by a specialist subcontractor before the new top, bottom and side seals were fitted. Reinstatement of the gates included dewatering trials to ensure the seals performed.

Case Studies

ESB Hydroelectric Station Downstream Gates