DECENT MACHINERY recently held an in-depth, face-to-face technical meeting with the engineering team of an internationally renowned European contractor behind a government-level drainage tunnel project. Both sides reviewed the tunnel ventilation requirements in detail — and every requirement raised by the client, from a tunnel ventilation fan noise level below 85 dB to anti-corrosion protection for coastal service, is fully within DECENT MACHINERY’s delivery capability.
A Landmark Drainage Tunnel Project
The project involves boring a drainage tunnel of approximately 3.6 kilometers in length and about 5 meters in diameter, intercepting stormwater and discharging it directly to the sea to relieve flooding in low-lying urban areas. One section will be driven by TBM, the other by drill-and-blast — meaning the ventilation system must adapt to three distinct construction phases, operate 24/7, and comply with British Standards throughout.
Listening First: Engineering Alignment Before Any Proposal
During the meeting, DECENT MACHINERY’s team went through the client’s technical documentation page by page: tunnel plans and profiles, typical cross-sections, and space-proofing drawings. The client made one point very clear — the supplier must take full responsibility for the sizing calculations, ensuring the right match between fan power, duct diameter, and applicable regulations. This is exactly how DECENT MACHINERY works: every tunnel ventilation fan proposal starts from the project’s real airflow, pressure, and space conditions, not from a catalogue page.
Every Requirement on the Table — Answered
The client’s engineering team put forward a clear set of requirements, and DECENT MACHINERY confirmed its capability on each one:
• Noise below 85 dB — achieved with matched fan silencers sized alongside the fan itself;
• World-class motors — ABB or Siemens motors available as standard options;
• Siemens variable frequency drive (VFD) control — for soft starting, energy-efficient speed regulation, and precise airflow adjustment across all construction phases;
• Coastal anti-corrosion protection — shot blasting surface preparation plus a multi-coat painting system, built for the salt-spray environment of a coastal city;
• Compact design for limited tunnel space — customized dimensions engineered against the actual cross-section and clearance drawings;
• Complete duct package — flexible ventilation ducts supplied together with the fans, so the client deals with one accountable supplier.
One-Stop Tunnel Ventilation Solution
Beyond the fans themselves, the project’s ventilation scope includes silencers, VFD control, flexible ducting, inlet nozzles with protection grids, airflow measurement with display, and a centralized control station. DECENT MACHINERY integrates all of these into a single, coordinated tunnel ventilation fan solution — sized, manufactured, and documented under one quality system.
The meeting concluded on a highly positive note, with both teams aligned on the technical direction and next steps. DECENT MACHINERY remains committed to supporting tunneling contractors worldwide with engineered ventilation solutions — designed around each tunnel’s real conditions, built with internationally renowned components, and delivered with complete technical documentation.
For tunnel ventilation fan inquiries and customized project solutions, visit http://www.scy-fan.com or contact our engineering team directly.
Hot News
Upholding the philosophy of quality-oriented development and customer-centric service, DECENT MACHINERY continues to expand its global mining equipment market footprint. Recently, the company has achieved in-depth and repeated cooperation with a high-standard mining client in Southeast Asia, relying on reliable product quality, rigorous safety standards and transparent full-cycle service, further ...
DECENT MACHINERY continues to deliver robust custom‑tailored tunnel ventilation solutions for a flagship underground gold mining operation across Central Asia, addressing extreme underground operational challenges within complex deep‑mine environments. The region’s premier underground gold mine has long grappled with persistent operational bottlenecks stemming from narrow underground drifts, kilom...
Recently, DECENT MACHINERY’s overseas business team held an in-depth face-to-face business meeting and friendly dinner negotiation with long-term European clients in Shanghai. Both parties reviewed the whole progress of project communication, confirmed the official cooperation order, and conducted in-depth discussions on future multi-dimensional strategic cooperation. The project cooperation bet...
We are delighted to announce that Decent Machinery has won a new contract for multistage centrifugal fans. This equipment will be deployed in a major China‑aided landmark project in Southeast Asia. The end customer is a global leading manufacturer of power semiconductors. The multistage centrifugal fans are designed for the factory’s wastewater treatment system, serving as core aeration equipmen...
