Coal, gas, biomass and nuclear power plants require precise on-site machining of turbine casings, generator rotors and steam-generator welds. During outages, thick-walled pipes made of demanding materials must be cut, bevelled and post-weld heat treated within short windows.
HSOS delivers cutting, line boring, face milling, on-site grinding and PWHT with documented accuracy to DIN, VGB and VDI standards. We have extensive references in the cutting and beveling of thick-walled components, turbine machining and heat treatment during power plant outages.
Experience: large-scale power plants (hard coal, lignite), CCGT plants, biomass cogeneration plants, secondary loops in nuclear power plants.
Challenges
- ▸Highest tolerances: ±0.05 mm over multiple metres
- ▸Heavy workpieces: 30-200 t
- ▸Tight outage windows
- ▸Material variety: Cr-Mo, austenitics
- ▸Poor weldability due to magnetism
- ▸VGB and VDI documentation
Our experience
- ✓Line boring to size, laser-measured
- ✓Heat treatment of CrMo and P9x steels
- ✓Large turbine casings
- ✓Secondary loops of nuclear plants
- ✓Cutting and bevelling of thick-walled piping
- ✓Reconditioning of damaged flanges
- ✓Demagnetising
References
FAQ
Line-bore tolerances?
±0.05 mm over 6 m, laser-verified.
Multiple OEMs?
Siemens, GE, MHI, Alstom, Mitsubishi — experience available.
VGB-certified?
PWHT per VGB-R 511 and VDI 2880.
Nuclear plants?
Secondary side yes, with radiation safety training. Not primary.
Always available – fast on site
Less downtime, less production loss. Contact us – 24/7.
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