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OYU TOLGOI UNDERGROUND PROJECT STRUCTURAL, MECHANICAL, PIPING, ELECTRICAL & INSTRUMENTATION (SMPE&I) WORKS OF THE CONCENTRATOR CONVERSION CONSTRUCTION

CLIENT

Oyu Tolgoi LLC 

CONTRACT TYPE

Cost Reimbursable

SECTOR

Infrastructure

LOCATION

Oyu Tolgoi, Mongolia

PROJECT DURATION

February 2023 – July 2025

Project Description

The Structural, Mechanical, Piping Electrical & Instrumentation (SMPE&I) works of the Concentrator Conversion Construction is one of the most critical portions of the Oyu Tolgoi Underground Project. ENKA’s involvement in the project commenced with the Early Tenderer Involvement phase and subsequently, ENKA was awarded the SMPE&I construction works contract following a competitive tender process.

Oyu Tolgoi is a copper-gold mine situated in the Umnugovi aimag of Mongolia, approximately 550 kilometres south of the capital Ulaanbaatar. It holds one of the largest high-grade copper deposits in the world. Oyu Tolgoi LLC is a Mongolian company, jointly owned by Erdenes Oyu Tolgoi LLC on behalf of the Government of Mongolia (34%) and Rio Tinto (66%). Rio Tinto also manages Oyu Tolgoi on behalf of the partnership. The Oyu Tolgoi concentrator stands as the biggest industrial unit ever built in Mongolia, containing enough steel to build the Eiffel Tower three times.

Spanning 255 meters in length and 144 meters in width, the concentrator, which produced its first copper concentrate on February 1st, 2013 and initiated customer shipments on July 9th, 2013, has the capacity to process up to 100,000 tons of ore daily.

As part of the Oyu Tolgoi Underground Project, the concentrator plant is undergoing upgrades to enable higher-grade ore and increased production.

ENKA Scope of Services

ENKA’s scope of work includes all the activities associated with deconstruction, demolition, decommissioning, modification, rectification and new installation of steel erection, mechanical installation, piping and tie-ins, supply and installation of cable tray, electrical and instrumentation cable pulling, electrical and instrumentation cable termination, installation of e-room, transformers, fire protection piping.

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