A leading global heavy-duty gas turbine manufacturer required a complete acoustic enclosure solution for a 385MW M701F4 heavy-duty gas turbine power generation project in South Korea.
The M701F4 series gas turbine is widely applied in large-scale combined cycle power plants. Due to strict Korean power plant standards, the project required extremely high requirements for structural strength, welding accuracy, acoustic performance, and manufacturing quality.
CLET provided an integrated design and manufacturing solution for the complete auxiliary equipment acoustic enclosure system, including gas turbine auxiliary acoustic enclosures and turning gear acoustic enclosures.
This project represented an important milestone as CLET’s first direct order from a global gas turbine original equipment manufacturer (OEM), demonstrating CLET’s capability in supplying high-end acoustic equipment for international heavy-duty gas turbine applications.
South Korea
Gas Turbine Model:
385MW M701F4 Heavy-Duty Gas Turbine
Delivery Type:
Integrated Design & Manufacturing Solution
Delivered Products:
Project Timeline:
Initial order received in April 2024
Complete delivery completed in November 2024
Large-Scale Acoustic Enclosure Requirements
The auxiliary equipment and turning gear of the 385MW gas turbine generate significant operating noise.
The acoustic enclosure needed to achieve a balance between:
Strict OEM Manufacturing Standards
The project required compliance with strict OEM quality requirements, including:
Conventional manufacturing processes were unable to meet the required inspection standards.
Large-Scale Transportation & Installation Challenges
Due to oversized enclosure dimensions, the equipment required:
Any dimensional deviation could affect final installation accuracy at the power plant site.
Need for Reliable Overseas Supply Capability
The customer required a supplier capable of:
to reduce procurement costs and shorten project lead time.
1. Integrated Design & Manufacturing of Large Acoustic Enclosures
CLET independently completed the complete engineering development of:
including:
The enclosure system featured:
All connection interfaces were precisely matched with the M701F4 gas turbine system.
2. Manufacturing Quality Control Based on OEM Standards
CLET implemented strict quality control throughout the manufacturing process:
Before delivery, each enclosure completed:
Complete inspection reports and engineering documents were provided for technical review.
The products successfully passed OEM acceptance requirements.
3. Modular Prefabrication for Overseas Transportation
Due to the oversized enclosure structure, CLET developed a customized modular delivery solution.
The process included:
After transportation to Korea, the modular sections could be quickly assembled on site, significantly reducing:
4. Efficient Project Execution & Direct Supply Partnership
As CLET’s first direct OEM acoustic enclosure order, the company coordinated:
The complete manufacturing and delivery process was completed within seven months, meeting the customer’s construction schedule and establishing a direct supply channel for future cooperation.
Established Direct OEM Supply Partnership
This project marked CLET’s first direct acoustic enclosure supply order from a global gas turbine manufacturer, demonstrating CLET’s capability as an international heavy-duty gas turbine acoustic equipment supplier.
Successfully Passed High-Level Quality Requirements
The complete acoustic enclosure system achieved required standards for:
and was successfully delivered for installation at the Korean power plant.
Reduced Project Cost & Delivery Time
By leveraging CLET’s advanced manufacturing capability and efficient production system, the project achieved competitive procurement costs while maintaining reliable delivery performance.
Built Standardized Capability for Large Gas Turbine Projects
Through this 385MW M701F4 project, CLET accumulated valuable experience in:
providing mature solutions for future global F-class gas turbine projects.
Showcasing our engineering expertise and successful project experience across aerospace, energy, and industrial sectors.
