Power Generation

Mistinikon Lake Replacement of Spillway Guardrails and Flashboards

Client / Owner

Ontario Power Generation


Lower Notch Generating Station,
New Liskeard, Ontario

Completion Date
June 2021
No items found.

Mistinikon Lake Replacement of Spillway Guardrails and Flashboards

The Mistinikon Lake Control Dam sluice structure is comprised of six sluices and seven piers totaling 43m (140ft) in length.  

Each sluice has 6.4m (21ft) height by 4.3m (14ft) width. The control dam has an 87.02m (285.5 ft) spillway as part of its main dam structure. Flashboards lie along the entire length of the upstream crest of the spillway while guardrails are located on the downstream side of the spillway crest. In recent years, the flashboards have deteriorated extensively and are now at the end of the usable service life. The spillway guardrails do not meet current Standards and present a potential health and safety risk for OPG employees.

TESC was engaged by OPG to provide general contracting services at the Mistinikon Lake Control Dam for the supply and installation of spillway guardrails and spillway flashboards. TESC performed the procurement, supply, delivery, and removals/installation of all required materials, equipment, tools methods, labour, work, and supervision. The team was responsible for the design, supply, fabrication, erection, and inspection of the structural steel work, plate work, and wood work, which were completed in accordance with the relevant codes and standards. Fabrication welds and field welds were completed by a CWB certified shop and welders.

The team successfully completed the project on time and on budget, without injuries.

More Projects

Barrick Hemlo Cyanide Detox Plant & Tailings Flotation Complex
Glencore Onaping Depth Project Headworks Steel Installation
CKPI Installation of Chip Thickness Screening System
Domtar Power Recovery Boiler Chemical Treatment
Domtar HD Tower Piping
Coniston Generating Station 22kV-44kV Conversion
McVittie Generating Station Roof Replacement
Detour Gold Corporation Detour Lake Mine 13.8kV Substation Installation
Northgate Minerals Young Davidson Mine Substation Installation
BHP Billiton Jansen Mine Freeze Plant Supply Installation
Detour Gold Corporation Detour Lake Mine Concrete Slabs
Northgate Minerals Young Davidson Mine Headframe Construction
BHP Billiton Jansen Mine Hoist House Buildings
Vale No.8 Converter Installation
Sudbury INO Process Gas Project, Phase I
Mosaic K3 Mine Service Shaft Headframe Construction
Vale No.10 Converter Installation
Vale Matte Sep SMPEI Phase 2
Vale Matte Sep SMPEI Phase 1
Harte Gold Sugar Zone Mill Installation SMPEI Project
Tahoe Bell Creek Shaft Sinking Project
Sudbury Lime Plant Electrical Services Installation
Glencore Concentrate Unloading

Our portfolio

Project highlights showcasing TESC’s capabilities, problem solving, and leadership across industries.