Bristol, United Kingdom
Opened in 1977, Royal Portbury Dock is part of the Port of Bristol and is operated by The Bristol Port Company. It is situated near the village of Portbury on the southern side of the mouth of the Avon and handles a wide range of goods including motor vehicles and bulk cargoes. The 220m long stores are configured with a broad roadway, capable of accommodating three lorries side-by-side, running through the centre of the store with bulk handling bays on either side. They were previously lit using 250W high pressure sodium (SON) high bay fittings, 100 in total, sited either side of the roadways. When gear losses were taken into account, this amounted to an installed electrical load of 27,500W. These have now been replaced on a point-for-point basis with 108W Highbay LED fittings, resulting in a 61% reduction in installed electrical load, with an increase in lighting levels of around 20%. Because of the dusty atmosphere the Highbay fittings are IP65 rated.