Mythe 1941 & 1964 Eel Screens
Pro Steel Engineering (PSE) was approached by CIM6 (Costain) after Severn Trent Water Ltd (STWL) identified four freshwater river intakes at the Mythe water treatment facility, that required overhauling works to minimise the environmental impact of STWL operations on the leptocephalus populations. These works would be carried out as a part of the National Environment Programme, Phase 5 (NEP5) and the Eels Regulations 2009.
The steel structure would go on to support the Hydrolox Vertical Eel Screens at the Mythe 1941 and 1964 intake locations. To fulfil this brief, PSE commissioned KGAL Consulting Engineers to carry out the design elements of the project.
Following a briefing meeting PSE and KGAL set to work to meet the clients’ requirements that would also ensure it was easy to install at site. This reduced the need for specialist labour such as divers and rope access. Other limiting factors included that the maximum weight of any single component could not exceed 7.0Te due to restrictions of the size of crane that could be positioned at site.
It consisted of a base frame which sat on the existing concrete apron with two number supporting towers that would house the Vertical Eel screens.
The next issue to overcome was to form a seal between the existing pump house and the supporting structure. This issue was further complicated by the various undulations in the pump house wall. This issued was overcome by a simple detail where several sliding panels with strips of neoprene closed cell foam were bolted in position. This would allow the specialist labour to adjust the panels and seal the gap between the two structures.share