Once again, we are cutting something of large dimensions. Usually, these are pipes, but this time it’s a welded shaft, where part of the narrow-gap weld had to be removed. The shaft has a diameter of over 1400 mm, and the cut was made to a depth of 140 mm. Cutting and bevelling of pipes Other examples of large diameter cutting and bevelling
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 […]
“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 […]
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).
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, 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.
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 […]
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
A Rotary Air Preheater is a rotary heat exchanger in which heat exchange takes place thanks to the heat capacity of slowly rotating elements – sheets placed on the rotor. These elements take over the heat from the flue gases from the boiler (they heat up) and transfer it to the air sucked in from the environment, next directed further to the boiler burners. Thanks to the use of OPP, the efficiency of the installation is significantly improved by recovering a large part of the heat from the flue gases. OPP is used in virtually all solid (coal) fuel boilers. Our scope included machining work in four holes: rounding/turning of the hole to size Ø615H7, facing from approx. Ø120 mm to Ø 615 mm with allowance 50 mm (very large allowance!), production and assembly of centering sleeves, drilling and threading holes in the heater body and covers.
A large scope of works related to the main overhaul of the device. Facing approx. Ø1000mm Lock turning approx. Ø1000mm Facing approx. Ø500mm Turning the diameter approx. Ø500mm Turning the diameter approx. Ø600mm Facing approx. Ø600mm Turning the conical surfaces of the body and cover approx. Ø1900 mm
