Retrofitting of Barrage, Intake, and Control Room – Sunkoshi Hydropower Station (SHPS)

Retrofitting of Barrage, Intake, and Control Room – Sunkoshi Hydropower Station (SHPS)

The project entailed the structural retrofitting and restoration of key hydraulic infrastructure at the Sunkoshi Hydropower Station—including the barrage, intake structures, and control room. The objective was to enhance operational safety, address long-term wear and tear, and improve the integrity of civil components critical to water diversion and power generation.

This retrofitting was executed through systematic assessment, surface restoration, and specialized grouting and mortar applications, conducted under strict quality supervision by the consultant and NEA's CMG team.

Client

Nepal Electricity Authority (NEA)

Location

Lamosanghu, Sindhupalchowk, Nepal

Consultant

JVNL – a joint venture between Norconsult AS and Lahmeyer International GmbH

Contractor

Sinohydro Corporation

Project status

Completed

Sunkoshi Hydropower

Sunkoshi Hydropower

Retrofitting of Barrage, Intake, and Control Room – Sunkoshi Hydropower Station (SHPS)

The project entailed the structural retrofitting and restoration of key hydraulic infrastructure at the Sunkoshi Hydropower Station—including the barrage, intake structures, and control room. The objective was to enhance operational safety, address long-term wear and tear, and improve the integrity of civil components critical to water diversion and power generation.

This retrofitting was executed through systematic assessment, surface restoration, and specialized grouting and mortar applications, conducted under strict quality supervision by the consultant and NEA's CMG team.

Client

Nepal Electricity Authority (NEA)

Location

Lamosanghu, Sindhupalchowk, Nepal

Consultant

JVNL – a joint venture between Norconsult AS and Lahmeyer International GmbH

Contractor

Sinohydro Corporation

Project status

Completed

Key Activities and Scope of Work

Rust Treatment and Reinforcement Passivation:

  • Applied rust remover and passivator bonding solution on corroded rebars to prevent further deterioration

Crack Injection and Structural Repair:

  • Performed surface cutting (approx. 5mm depth) and created V-grooves for crack localization
  • Drilled holes and inserted metallic packers at identified structural cracks
  • Injected low-viscosity, two-component epoxy resin into cracks using a pressure grouting machine for effective structural sealing and bonding

Surface Mortar Application:

  • Applied high-strength, heavy-duty repair mortar on cleaned and prepared surfaces to restore load-bearing capacity of damaged concrete columns and walls

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