Abstract
This paper investigates the utilization of photogrammetry for the measurement of two distinct
power generation components, situated in New Zealand and the Philippines. Both
measurements employed the V-STARS Nikon-based system.
The application of this technology involved a collaborative effort between a photogrammetric
specialist and a turbine plant engineering expert. The outcomes of both studies identified
design and construction weaknesses, instigating substantial changes in plant engineering and
maintenance strategies, leading to significant improvements in plant availability and
reliability.
The New Zealand project is noteworthy for its comprehensive measurement coverage,
encompassing not only the main turbine structure but also the condenser, hotwell pumps, and
other crucial structural components of the power generation unit. Spanning approximately 25
x 25 x 25m across four different levels, unified coordinate measurements were repeated under
various operational conditions to quantify the changes the entire unit underwent.
In the Philippine project, measuring a seawater pump for the coal fired power plant
auxiliaries and condenser cooling presented a unique challenge. The motor assembly is
positioned above the main pump, while the main pump and ancillary components are located
below sea level. Again, a unified coordinate system for all the key components was required.
This project faced the added challenge of key targets being under leaking pumps,
necessitating various investigations on the accuracy impact of wet targets.
Remarkably, both projects achieved high precision, maintaining accuracies consistently
within the range of 30 to 50 microns across the entire measurement volume. Photogrammetric
techniques not only facilitated precise measurements but also enabled the development of
comprehensive action plans. These plans, rooted in meticulous data analysis, reflected
observed behaviours. The New Zealand case, with its repeated measurements, offered
valuable insights into dynamic changes over time, while the Philippines project underscored
the adaptability of photogrammetry in challenging conditions. The cumulative findings
contribute significantly to advancing the understanding of the effects of process driven
changes in force and geometry and enable proactive strategies for maintenance and
optimization in power generation.
Cite this paper
Giuseppe Ganci, Pieter Krige. Gancell Pty. Ltd., Moonee Ponds, Victoria, Australia; PK Engineering, Ngaruawahia, Waikato, New Zealand. Presented at the Coordinate Metrology Systems Conference 2024, Charlotte, North Carolina, July 22-25, 2024. Coordinate Metrology Society, reference CMS-2024-006.