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Colenco Info September 2001 Berke Arch Dam in Turkey Berke, a 200 m high arch dam in Turkey, is nearing completion and impoundment will commence in autumn of this year. The crest spillway with strongly reinforced concrete and two so-called seismic belts was particularly challenging.
Colenco is the consultant for the Turkish contractor, Yapi ve Tiçaret for this exceptional dam structure. Dr. H. Kreuzer / Z. Kolar - Hydropower Plants Measures to Reduce Traffic Noise Levels in Baden, Switzerland During the period from 1996 to 1998, a partial street noise renovation plan was prepared for the Mellinger street. This was based on the noise pollution survey, carried out in 1992 for the main road no. K 268 in Baden. Within the scope of this work, possible measures to reduce noise emissions caused by traffic were examined. The work showed that an improvement for many of the people living nearby could be achieved by renovating the road surface between the motorway exit and the Schadenmühle square, on the one hand, and on the other hand by erecting four noise protection barriers. These noise protection barriers, engineered by Colenco Power Engineering Ltd were put up in 2001.
Ina Huszárné-Hergt - Noise Control and Building Acoustics Assessment of Condition and Optimisation of a Diversion Intake Since commissioning in 1960, the power station Hinterthal generates some 39 Mio kWh electrical power in a year, as 5th stage of the Muota-Hydropower-Sheme which is situated in the Swiss alps. Considering the age of the plant as well as the remaining duration of the operation license, the Owner requested Colenco to assess the condition of the diversion intake and to advise the required measures for its rehabilitation. In addition to such rehabilitation measures for the civil structures, the hydraulic steel structures and the control system, Colenco proposed upgrading alternatives allowing for an up-to-date operation of the intake. Further, the present plant operation revealed that, despite sufficient water inflow to the intake, the compensation basin cannot be fully filled. The hydraulic analysis carried out indicated high energy losses in the 168 m long feeder canal which conveys the discharge either directly to the headrace tunnel or to the compensation basin depending on the water demand of the power station. Furthermore, operation restrictions due to air entrance into the power tunnel system were detected upon discussions with the operating staff of the plant.
Kurt Wermelinger - Hydropower Plants |
