Modular Turbine Enclosure
for SGT6-9000HL

Yeoju, Icheon and Cheongju Power Plants, South Korea

Why We Committed to the Project

Large gas turbines are among the most powerful machines in the world and play a key role in securing stable energy supply for growing regions. Traditionally, building acoustic enclosures and auxiliary piping systems for these turbines can take up to 15 weeks on site and requires significant skilled labor.

To help our customers reduce on-site time and labor demands, we helped develop the Auxiliary Integrated Package (AIP) — a modular acoustic enclosure concept that allows maximum pre-assembly in our workshop and minimises installation work at the construction site.

How We Contributed to the Project

During 2020 and 2021, we were tasked with building four units of SGT6-9000HL modular enclosures destined for South Korea — two units for the Yeoju power plant and one each for the Icheon and Cheongju power plants. Additional benefits of this modular approach included simplified global transport from the Czech Republic to South Korea.

Each AIP consists of ten major modules, including six large horizontal ones. Standard modules integrate fuel distribution piping, the lube oil system, pneumatic controls for dampers and valves, fire protection, electrical wiring, measurement and control elements, and lighting. The enclosure casing is delivered with acoustic insulation and pre-fitted access openings.

Each module's support structure is welded, piping routes are pre-installed, and all units undergo trial assembly with 3D scanning to ensure a precise fit and minimise corrections on site. After testing, the modules are completed with up to 95% of components pre-installed.

SPECIFICATIONS

AIP Module No. 9:
Cooler dimensions: 9,100 × 2,500 × 4,000 mm
Weight: 11,375 kg

Complete Enclosure:
Overall dimensions: 12,528 × 14,468 × 10,525 mm
Weight: 87,070 kg without roof section, front and end wall
Number of modules: 10 + robot zone

More about the Yeoju project

The Yeoju project in South Korea features a cutting-edge combined‑cycle power plant based on Siemens HL‑class technology. Developed by SK Engineering & Construction for Yeoju Energy Services, this facility integrates two SGT6‑9000HL gas turbines, one SST6‑5000 steam turbine and three SGen6‑2000P generators, delivering a total capacity of 1,004 MW and achieving an impressive efficiency of over 63 % .

Fuelled by regasified LNG and equipped with two heat‑recovery steam generators and Siemens’ SPPA‑T3000 control system, the plant is engineered for both economic and environmentally friendly operation . Commissioning is scheduled for mid‑2022 .

This project marks Siemens’ first HL‑class order in Asia and the fourth worldwide, reflecting its proven design lineage from the SGT‑8000H series, which has accumulated over a million service hours globally . The Yeoju project sets a benchmark for high‑efficiency, low‑emissions power generation suitable for regions reliant on imported LNG.

MORE CASE STUDIES

With a strong legacy in energy products, we are constantly moving towards cleaner energy solutions.

Turnkey delivery of a renewable gasification plant
Sofidel, Kisa plant, Sweden

Upgrading power plant's existing filterhouse with an inlet chilling technology (coming soon)
Redhawk power plant, Arizona, USA

Delivery of special-purpose storage and process tanks for an offshore HVDC station
Sunrise Wind offshore farm, New York, USA

OUR APPROACH

We have grown through a combination of engineering know-how, courage, common sense and the proven skills of our workers. We are the bridge between thinking and making, between an idea and a multi-ton product, between our generation and the next.

Engineering and innovations

Many of our works delivered around the world were the first of their kind, whether they were components of drilling systems or green methanol production solutions. We have always tended to be co-creators of engineering solutions, never giving up on any technological challenge.

Whatever can be invented can be manufactured.

Manufacturing and delivery

Our roots are in the welding shop where it all began thirty years ago. We know well enough about steel to make it work perfectly for the energy projects of the future.

We also know that even a well-made component is useless until it's delivered, up and running. That's why we handle the entire product lifecycle - from design to go-live.