HomeDistributionM12843Evidence
Topic/Matter Intersection

Topic:"Distribution" in M12843

Matter: Nova Scotia Power Inc. CI C0044172 – L7005 Canso Crossing Vibration Mitigation - $2,431,095 (P&A)2026 Q1 Capital Reports
8 passages 2 documents

Distribution across all matters →

N-2CI C0044172 REFILE - Redacted 7 passages
Inclusions p. p. 7
voltage, long distances) from power distribution (short distance, lower voltage connections to retail customers), the principles of estimating these elements are similar; i.e., the RP applies to both. The main physical power transmission l...

AI summary The text discusses the physical and installation elements involved in power transmission lines, including conductors, support structures, land clearing, trenching, and special considerations for crossings and subsea installations. It highlights the sensitivity of project costs to material escalation and the challenges posed by environmental, urban, and remote installation conditions.

REDACTED CI C0044172 Attachment 1 Page 50 of 247 p. p. 55
REDACTED CI C0044172 Attachment 1 Page 50 of 247 APPENDIX 1 DOCUMENT LIST H349324-00000260-078- 0003_A_V1.pdf 20-10-2015 Insulator and Hardware Specification 345 kV Canso Strait Crossing Design, Manufacture, Test and Supply of Insulator an...

AI summary The document contains technical specifications for a 345 kV transmission line and insulator hardware, including details on conductor type, design loads, and testing requirements. The focus is on standards and procedures for manufacturing and quality assurance.

6. RECOMMENDATIONS p. p. 93
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.

REDACTED CI C0044172 Attachment 1 Page 90 of 247 REDACTED (CONFIDENTIAL INFORMATION REMOVED) p. pp. 95-97
REDACTED CI C0044172 Attachment 1 Page 90 of 247 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED CI C0044172 Attachment 1 Page 91 of 247 200, 1290 - 91 Street SW Edmonton, AB, Canada T6X OP2 F: 780.481.1373 T: 780.960.1950 Based on th...

AI summary The document recommends a thorough climbing inspection of bolts, including checking and marking their torque, and adding washers to suspension insulator hardware bolts to reduce wear and bending.

REDACTED CI C0044172 Attachment 1 Page 92 of 247 REDACTED (CONFIDENTIAL INFORMATION REMOVED) p. p. 97
REDACTED CI C0044172 Attachment 1 Page 92 of 247 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Rev1. Sep. 2024 Page 16 of 27 APPENDIX B DR. HAVARD REPORT 2024 REDACTED CI C0044172 Attachment 1 Page 93 of 247 Canso Strait 345 kV Crossing: Dro...

AI summary The document references a drone inspection of the Canso Strait 345 kV Crossing conducted in May 2024 as part of an appendix to a 2024 report by Dr. Havar.

Section 375 p. pp. 151-153
The Canso Strait, located between high lands and near both the Atlantic Ocean and the Saint Lawrence River estuary, experiences severe weather conditions, including strong winds and winter storms. These conditions cause significant vibrati...

AI summary The Canso Strait experiences harsh weather conditions, leading to conductor vibrations and damage on power lines. In 1984, galloping caused conductor damage, which was resolved by adding air flow spoilers. This solution became a reference for future monitoring and comparison.

Wires p. p. 170
und. - 11) Added "Sections/Concentrated Loads Automatic Placement" feature for reporting on wires exceeding a specified height above ground or automatically placing marker balls on them. Options are provided to control spacing, staggering...

AI summary The text describes updates to software features related to wire management and compliance with various international electrical standards. These updates include new functionalities for reporting on wire placement, support for new codes, and improved calculation methods for ruling spans.

N-3NSPI (NSEB) RIR 1 to 4 - Redacted 1 passage
CI C0044172 – L7005 Canso Crossing Vibration Mitigation (NSEB M12843) NSPI Responses to Nova Scotia Energy Board Information Requests p. p. 5
CI C0044172 – L7005 Canso Crossing Vibration Mitigation (NSEB M12843) NSPI Responses to Nova Scotia Energy Board Information Requests 1 Request IR-2: 3 (a) Yes, NS Power identified the 1984 galloping issues on L-8004 as there were line tri...

AI summary The response discusses past issues with galloping on L-8004 in 1984, leading to line trips and corrective measures like air flow spoilers. For L-7005, the concern is aeolian vibrations due to inadequate damping, unlike L-8004 where galloping was the issue. External experts were consulted in both cases.

Disclaimer: These summaries were generated by AI from the filings they describe. We take care to make them accurate, but errors are possible - and they aren't advice. Only the filings themselves are the record: if you're relying on something here, confirm it against the source documents or the Nova Scotia Energy Board's own record. Full disclaimer →