Emergency Spillway Gate Replacement at Norland Hydropower Plant

Client

Timber Run Hydropower Corporation

Location

Norland, Ontario, on the Gull River

Project status

Completed in 2017

Equinox Construction Services (ECS) was mandated to execute the replacement of Emergency Spillway Gate at the Norland Hydroelectric Project.

The mandate focused on restoring the operational reliability and safety of a critical hydraulic control component. The work required careful coordination, technical precision, and strict adherence to dam safety regulations to ensure uninterrupted performance of the plant.

Expertise
  • Dam rehabilitation
  • Structural concrete works
  • Construction management in remote environments
  • Multidisciplinary coordination
  • Regulatory compliance and dam safety
  • Spillway gate replacement
  • Hydromechanical integration
  • Dam safety compliance
  • Construction management
  • Hydraulic structure rehabilitation

Timeline

3 years

Cost

350 000$

Professional fees

61 200$

The Challenge: Replacing a Critical Hydraulic Component Without Compromising Operations

The replacement of Emergency Spillway Gate 2 required intervention on an essential dam safety structure within an active hydropower plant.

The primary challenge was to execute the removal and installation of a major hydromechanical component while maintaining structural integrity, controlling water levels, and ensuring worker and public safety. The project also required tight sequencing, specialized lifting operations, and full compliance with applicable hydraulic and safety standards.

In projects of this nature, precise planning, proactive risk management, and strong coordination between engineering, field crews, and stakeholders are critical to ensuring performance and long-term reliability.

Norland HP – Emergency Spillway Gate
Norland HP – Emergency Spillway Gate
Norland HP – Emergency Spillway Gate

Intervention by Equinox Construction Services

Our team ensured the detailed planning of work sequences, coordinated specialized subcontractors and suppliers, and supervised both the removal and installation of the gate. Throughout execution, we maintained strict quality control and regulatory compliance while proactively managing site-related risks.

To support the intervention, comprehensive technical documentation was developed, including site-specific work methodologies, lift plans and safety procedures, hydraulic control sequencing, as well as inspection and commissioning reports.

Upon completion, Emergency Spillway Gate 2 was fully operational, restoring the safety and reliability of the hydraulic control system.

Services Provided

  • Supervise the design team and compare concepts
  • Identify savings and risks for the Owner
  • Manage the various Project Stakeholders
  • Owner of the Project Schedule and Project Budget
  • Validated the various inputs provided to Design Team
  • Managed an informal Call for Tenders period
  • Contracted and managed the Fabrication Team
  • Supervised the installation and commissioning
  • Currently involved in the operation and maintenance ofthe equipment.

Team

Bryan Moloughney
Bryan Moloughney
P.Eng., M.Eng.M., PMP

A Strategic Intervention to Secure Dam Safety Performance

Replacing a spillway gate is not simply a mechanical upgrade, it is a critical dam safety intervention requiring a deep understanding of hydraulic behavior, structural interfaces, and operational constraints.

At Norland HP, Equinox Construction Services applied its field expertise in hydraulic infrastructure rehabilitation to optimize sequencing, mitigate operational risks, and ensure compliance with dam safety requirements. Continuous communication with the client ensured alignment throughout each phase of execution.

Our field-driven methodology, combined with structured risk assessment, enables us to deliver reliable, durable, and regulation-compliant solutions tailored to each site.

Five diverse coworkers standing and smiling in a modern office with a wooden desk and computer behind them.
“Intervening on critical hydraulic infrastructure requires more than technical knowledge — it demands precision, coordination, and disciplined execution in the field.”
Bryan Moloughney, P.Eng., M.Eng.M., PMPP
Additional Resources
Printable project sheet