Laser Tracker and Photogrammetry suport to hydro
- SURVICE Metrology personnel were among the first to introduced laser trackers into the hydroelectric industry.
- In addition, our personnel pioneered the use of photogrammetry in the industry.
- We have a very solid reputation in the hydroelectric industry and have returned year by year to many sites until all units have been refurbished.
Support to new construction
- SURVICE Metrology has provided precision measurements to support the installation of serveral new hydroelectric unit installations.
- These installations often require working outdoors; exposed to the elements, sometimes at night to minimize differential thermal expansion of the parts being installed.
- Our personnel have provided precision measurements for the installation of several units on the Ohio River as well as the Holtwood Powerplant in southern PA.
Support to refurbishments and upgrades
- A SURVICE Metrology personnel are trained to efficiently and accurately measure generator components such as stators and rotors.
- We are also highly experienced at the measurement of turbine components, including:
- checking shaft for verticality
- verifying wicket gate locations
- setting of the wicket gate opening mechanism.
- We also specialize in the measurement of turbine blades, both in and out of the unit, providing a very useful comparison with CAD if required.
- Scan data post-processing.
Support to stator builds and keybar installations
- All SURVICE personnel are experienced at key bar installation.
- SURVICE has developed a proprietary method for the keybar placement which greatly assists welders and allows for fast and efficient alignment of the keybars.
- If you have existing procedures that have worked well for you in the past, we will work with you to ensure that the installation goes smoothly.
Photogrammetry support to hydro
- SURVICE Metrology personnel introduced digital photogrammetry, as a supplement to laser tracker measurements, to the hydroelectric industry.
- This measurement technique requires only a digital camera, computer, scale bars and targets. When employed by our experts, the system is capable of very similar accuracy to the laser tracker.
- The system can be employed for any measurement but is particularly useful for the final core measurement as it is much easier to ship to remote sites than a laser tracker.
Support to disassembly and as-found measurements
- Once the turbine components have been removed, measurement of the remaining embedded components is often required.
- SURVICE Metrology personnel are experienced at capturing these component measurements both with laser trackers and photogrammetry and making sure that the measurements are correctly aligned to gravity.
- We will safely and efficiently work with your crane operator and man basket, if required.
