Steel Gate Rehabilitation, Snare Falls Hydro
The Northwest Territories Power Corporation (NTPC) retained Meco to develop a design that would allow for all-season operation of the two gates located at Snare Falls.
Responsibilities included a site inspection to verify dimensions, coordination with operation staff to achieve a functional design, design development preparation of design documents.
The solution recommended changing the approach for heating away from ceramic heaters to a heat trace tape system that allows for ease of installation, more favorable voltage regulation and lighter weight maintenance.
The main components of the project deliverables were:
- As assessment of alternatives to achieve the goal, including gate modifications, dam modifications and operational changes.
- Site survey to verify member dimensions, elevations and interviews with operations staff.
- Coordination of design development to include operations staff and capture functional needs in final design.
- Prepare structural details for isolation, fastening and attachment of a gate system to enclose the heating elements.
- Electrical design for voltage regulation, heat trace installation, attachment.
- Prepare contract documents including drawings and technical specifications.
Bridge Condition Assessments, Snare Hydro System
The Northwest Territory Power Corporation (NTPC) retained Meco to perform bridge inspections of the superstructure and supporting system for two (20 single span steel bridges at Snare Hydro, in accordance with CSA standards S6‐14.
The objective of the inspection was to:
- Observe potential deficiencies in the bridges;
- If applicable, provide a suitable maintenance/inspection plan;
- Evaluate the suitability for vehicular traffic comparing with original design criteria; and
- Prepare a Condition Assessment Report.
Both bridges were observed to be in Fair to Good Condition and were assessed as adequate for non-permit maximum allowable gross weight ratings. No load posting is required.