Beneath Pluit Raya Street in North Jakarta, a Microtunnel Boring Machine operates with remarkable precision.
The machine forms part of the Jakarta Sewerage Development Project (JSDP) Zone 1. This initiative will improve wastewater management for millions of residents.
PT Tohoma Mandiri was selected to execute the microtunneling works for this strategic infrastructure project.
The site sits within a dense urban environment where operational standards remain extremely demanding.
In this setting, reliable power supply becomes a critical success factor.
Operational Challenges with Zero Margin for Error
Microtunneling differs significantly from conventional construction activities.
Slurry systems require continuous operation throughout the tunneling process. Any power interruption can affect pumps and disrupt production.
The project location also sits close to residential communities. Noise and emissions must remain under strict control.
At the same time, the site requires substantial power capacity. Peak demand reaches 566 kW, while continuous load averages 385 kW.
These conditions required a solution capable of delivering stable performance without compromising community comfort.
Why PT Tohoma Mandiri Selected AMPD 400
After reviewing available options, the engineering team selected AMPD 400 tunneling technology.
Large diesel generators introduced concerns related to noise, emissions, and fuel logistics. Permanent utility connections required a much longer implementation timeline.
AMPD 400 addressed all project requirements through a single solution.
Key capabilities included:
- 428 kVA nominal output
- 595 kVA overload capacity for 10 seconds
- Reliable support for MTBM motor starts
- Approximately 65 dBA operating noise
- Zero emissions at the job site
- Real-time 4G monitoring
- Charging from available utility power on site
These features provided the flexibility required for demanding underground construction activities.
Measurable Results Throughout the Project
The system delivered strong performance during the entire project period.
Operational uptime reached 99.9%.
The project recorded zero power interruptions affecting MTBM operations.
Every motor start surge was handled without trips or disruptions.
No working days were lost due to power-related issues.
Community impact remained equally impressive.
The project generated zero noise complaints from nearby residents.
Authorities issued no notices related to emissions or excessive noise.
The site also recorded zero fuel spill incidents.
Financially, AMPD 400 tunneling reduced OPEX by approximately 30–35% per month compared with a full diesel setup.
The project eliminated the need for one 250 kVA backup generator.
Fuel cost reductions reached approximately IDR 45–60 million per month.
Setting a New Standard for Urban Construction
JSDP Zone 1 demonstrates that world-class infrastructure can be built with cleaner technology.
Contractors no longer need to choose between performance and community acceptance.
Modern power solutions can deliver reliability, efficiency, and environmental benefits simultaneously.
This project provides a clear example of how advanced energy technology supports the future of underground infrastructure development.
Does your tunneling or pipe jacking project require unfailing power—in environments that are intolerant of noise and emissions? This is our specialty.
Whatsapp : +62 811-8111-3032
Email : sales@protk.co.id
