N-2CI C0044172 REFILE - Redacted
10 passages
2022 Inspection & Repair In May 2022, a climbing inspection was conducted which confirmed the locations of conductor damage, slipped dampers and dampers missing weights. Later in the year, in 2022, conductor repair was completed, and new P...
AI summary In May 2022, a climbing inspection identified conductor damage, slipped dampers, and missing damper weights. Repairs were completed later that year, but special dampers and armor rods were unavailable due to manufacturing delays, leading to the use of custom solutions.
7. SHORT TERM RECOMMENDATIONS - ❖ Review status of back spans Add damping if damage is found - ❖ Repair known damage to conductor with reinforcing layer - ❖ Locate and install dampers for use over arm rods - ❖ Inspect tower arm members for...
AI summary The short-term recommendations focus on inspecting and repairing infrastructure, including checking for damage, reinforcing conductors, installing dampers, and setting up monitoring systems to ensure the safety and reliability of the power grid.
REDACTED CI C0044172 Attachment 1 Page 50 of 247 APPENDIX 1 DOCUMENT LIST 180- rev0 Nova Scotia – Canso Type test certificate Tests: visual examination, LATIF report 17LA00056 is type test.pdf No. 17/180 Rev. 0 dimensions, materials, missi...
AI summary This document lists a type test certificate for electrical components conducted in March 2017 by Salvi Test Laboratory. The tests included visual examination, dimensions, materials, galvanizing, and failure load. The dead-end tension clamp failed, but after redesign, it passed the test requirements according to IEC specifications.
6. RECOMMENDATIONS - ❖ Vibration recording, video cameras and weather monitoring should be at the Cape Breton end of the span. - ❖ The cause of the weight falling off the PLP-Helix damper should be investigated. - ❖ All new Helix dampers s...
AI summary The recommendations focus on safety and monitoring measures for the Canso Strait 345 kV Crossing. These include vibration recording, video monitoring, inspection of dampers and towers, and ongoing data review to ensure structural integrity and performance.
4. Photos around the Suspension Structure on Cape Breton Island: May 26 2024 Figure 4 General view looking west along the Canso Strait including the suspension structure on Cape Breton Island. Detail from Photo No. DJI 20240117231058 0029...
AI summary The document includes photos from a drone survey of a 345 kV power line crossing the Canso Strait near a suspension structure on Cape Breton Island. The images show the condition of conductors, insulators, and dampers, including a fractured PLP damper from the previous winter. The inspection highlights the exposure of conductors to wind and ice-related stresses, and the need for proper maintenance.
9. Recommendations - ❖ The main span needs to be surveyed or photographed to determine whether there is a need for any repairs before the new vibration and galloping hardware is installed. - ❖ Any vibration recording, video cameras and wea...
AI summary The recommendations outline procedures for inspecting and monitoring the Canso Strait 345 kV power line, including surveys, vibration monitoring, drone inspections, and regular site visits by engineers to ensure the safety and integrity of the infrastructure before the winter of 2024.
10. References - Interim Report, "Drone-Based Survey of Nova Scotia Power's L7005 345 kV Canso Strait Crossing". Report for Balraj Bilkhu, P.Eng., President AAB Engineering Inc. by David G. Havard, Ph.D., P.Eng. President, Havard Engineeri...
AI summary The section provides references to technical reports and presentations related to the Canso Strait 345 kV power line crossing, including a drone-based survey and historical investigations of conductor damage.
REDACTED CI C0044172 Attachment 1 Page 129 of 247 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED CI C0044172 Attachment 1 Page 130 of 247 design employed will be able to restore the strength and conductivity for up to half of the alu...
AI summary The document discusses repair methods for damaged conductor strands using formed wire rods, split sleeve designs, and proprietary solutions like Clamp Star to restore strength and conductivity. NS Power has provided information on these repair methods.
Str 729A upper platform, middle section. One piece of webbing was bent. One of two main bolts that connect the main support assembly to the platform showed minor signs of rust. REDACTED CI C0044172 Attachment 1 Page 189 of 247 Nova Scotia...
AI summary The document describes a physical inspection of a tower at the Canso Crossing by Nova Scotia Power Inc., noting a bent piece of webbing and minor rust on a bolt connecting the main support assembly to the platform.
Jumpers on str 729. The jumper section from the idler arm to the conductor on the west side of the str looks to be encroaching (estimated 3 ft) on the angled support assemblies that attach to upper platform to the SW, NW and Mid-West found...
AI summary The jumper section on str 729 is encroaching on support assemblies due to potential ice load causing sagging, but all hardware and connection points were found in excellent condition during inspections.