Having previously used CAN to provide safety supervision to engineers in 2011, Indian/Norwegian joint venture Adjaristsqali Georgia LLC (AGL) contacted CAN to assist with the inspection of a particularly inaccessible tunnel shaft.
Initial investigation by AGL had detected evidence of cracking within a 250m deep pressure shaft within the 37 kilometre long network of tunnels, part of a huge multi-national hydroelectric project. AGL now required experienced inspectors with a comprehensive knowledge of rope access and confined space techniques to safely access and inspect the shaft.
CAN Structures assembled a uniquely experienced team of four level 3 operatives combining rope access skills, with many years of structural inspection, and extensive caving experience – including expedition and rescue. Conventional abseil techniques were supported with powered (ActSafe) rope climbers. Detailed planning and complex rigging techniques meant the IRATA protocol of ‘rigging for rescue’ was strictly adhered to.
As well as collecting empirical data and photographs the inspectors also gathered video footage and commentary to enable a comprehensive assessment of the condition of the shaft.
The information gathered proved to be highly valuable to AGL and resulted in immediate remedial work, as well as informing future planning.
Duration: 8 days
Client: Adjaristsqali Georgia LLC (AGL)
Location: Shuakhevi, Georgia