Kayrakkum unit U2, Tajikistan

Kayrakkum unit U2, Tajikistan

We have completed the machining of the next unit: U2 The scope of work is similar to the previous units U6 – U3: machining of the upper and lower rings, front and cylindrical surfaces, drilling and threading holes in the lower ring, machining of the spherical part of the rotor chamber. The final unit U1 is coming up soon. Below are previous entries and image galleries: Qairakkum, Tajikistan Kayrakkum units 4 and 3, Tajikistan

HPP Senj, Croatia

HPP Senj, Croatia

HPP Senj is a large high-pressure diversion hydropower plant utilizing water from the Lika and Gacka rivers in Croatia. Senj HPP has four turbines with a nominal capacity of 72 MW each, totaling 220 MW. It is operated by Hrvatska Elektroprivreda. (Wikipedia).The concept of powering such a plant is presented in the diagram below: A diversion hydropower plant, sometimes called a run-of-river plant, channels part of the river’s water through a canal and/or a penstock, utilizing the natural drop in the riverbed to generate energy. The penstock is a closed conduit that directs water flow to the turbines, with the water flow regulated by sluices, valves, and turbines. A diversion […]

Kayrakkum units 4 and 3, Tajikistan

Kayrakkum units 4 and 3, Tajikistan

“At GE’s invitation, the supplier of new turbo sets, we are performing machining on additional units. We have just finished work on unit number 5, the second of six, being machined by us. Four more units are ahead of us.” This sentence appears in the previous post about this power plant from 2022. ➝ Click to see the previous post about the Kayrakkum power plant and the photo gallery In 2023 and 2024, we performed machining on the next two units: U4 and U3. The scope, similar to units U6 and U5: machining of the upper and lower rings, face and cylindrical surfaces, drilling and tapping of holes in the […]

Lay Dam HPP, Alabama, USA

Lay Dam HPP, Alabama, USA

The Lay Dam HPP is a gravity-dam run-of-river power plant on Coosa River, with 6 units of 30 MW where 4 units are foreseen to be upgraded in the near future. All units are of Kaplan type with fixed runner blades known as propeller-type Kaplan turbines. Commisioned in 1967 HPP is operated by Alabama Power Company. Lay Dam HPP is our first American project, carried out in collaboration with Litostroj Hydro, which is responsible for the turbine modernization.    Our scope included machining in the flow section: the lower and upper rings, as well as boring holes for the installation of guide vane journal bearings.   More about line boring: […]

Xayaburi HPP, Laos

Xayaburi HPP, Laos

Xayaburi HPP (Sayaburi) power plant on the Mekong River, with a capacity of 1,285 MW, operated by CKPower Ltd. The plant, which was commissioned in October 2019, is equipped with 7 units of 175MW each, supplied by ANDRITZ. Our task was to design, manufacture, deliver, and implement two special machine tools for final machining of the new Kaplan turbine components on-site in Laos. A specially designed, mobile, universal circular milling machine with a working range of up to fi2000mm, A mobile boring machine (actually, two boring machines, thanks to an additional mounting system) based on the iconic BB5000, was prepared by our company upon the customer’s special request. The entire […]

Bjufors HPP, Sweden

Bjufors HPP, Sweden

Bjufors HPP, a power plant owned by Statkraft, is located on the Umealven River in northern Sweden. It consists of two units with a total power of 42 MW. Similar to Bergvik, in 2023, we carried out mobile machining services at Bjufors for Unit 1, and this year, the same scope of work is being performed for Unit 2. The scope includes: machining of the rotor chamber (spherical surface).

Balforsen HPP, Sweden

Balforsen HPP, Sweden

Balforsens HPP, a power plant owned by E.ON, is located at the Ume reservoir dam in northern Sweden. It consists of two units with a total power of 88 MW. In 2024, we carried out mobile machining services at Bjufors, focusing on the machining of the runner chamber – spherical surface, for Unit 1.

Ojeforsen HPP, Sweden

Ojeforsen HPP, Sweden

Ojeforsen HPP, a 28.8 MW power plant owned by Fortum, is located on the Ljusan River in northern Sweden. In 2024, we carried out mobile machining services at Ojeforsen, focusing on the machining of the runner chamber – spherical surface.

Chaira Pump Storage HPP, Bulgaria

Chaira Pump Storage HPP, Bulgaria

Hydroelectric power plant of Chaira (Chaira PSHPP) was built in the Rila Mountains, about 100 kilometers southeast of the Bulgarian capital, Sofia. Chaira has a generating capacity of 864 megawatts (1,159,000 HP) and a pumping capacity of 788 megawatts (1,057,000 HP). The plant is equipped with four reversible Francis-type pump-turbines, each with a power of 216 megawatts (290,000 HP) in generating mode and 197 megawatts (264,000 HP) in pumping mode. Units 1 and 2 have been in operation since 1995, and during that time, Chaira was the largest pumped-storage power plant in southeastern Europe, with the highest single-stage pump-turbine drop in the world (690 meters in generating mode and 701 […]

Hydro Power Plant Bergvik

Hydro Power Plant Bergvik

Bergvik HPP, a Fortum-owned power plant located between Lake Marmen and Lake Bergviken in central Sweden. Two units with a total capacity of 16.2 MW. In 2023, we provided mobile machining services on Unit 1, and this year, the same scope on Unit 2. The scope included: machining of the runner chamber (spherical surface) and the creation of a seal groove in the lower ring. Machined sphere in the runner chamber Milling of the seal groove