Applus+ in Australia recently performed photogrammetry modelling on an emergency flare tower for a client.
Applus+ was requested to perform photogrammetry modelling on the emergency flare tower at the Karratha Gas Plant (KGP) in order to determine critical measurements connecting the riser stub to the main structure of the tower.
Measurements were also required at incremental elevations to determine the position of support beams running vertically down the tower. Alternative methods would involve using ground based LiDAR or employing a rope access team to physically take measurements. LiDAR would have difficulty retrieving data from such a far distance and use of a rope access team would require the flare to be shut down.
Applus+ utilised a Microdrone Md4-1000 UAV equipped with a Sony 42mp full frame camera and 55mm lens to capture 3600 high resolution photographs of the tower. This data collection work scope was completed within 4 days whilst the area was online. Following this process, the UAV team demobilised and data processing commenced at the Applus+ office in Perth. The model reconstruction was completed over the span of 120 computing hours.
Using photogrammetry modelling, a model of the flare tower was successfully reconstructed.