Sea Dogs Marine Services Pvt Ltd
Execution of De-silting Project at Dahanu – Pre-Cooling and C.W. Intake Channels 2025
At Seadogs Pvt. Ltd., we are proud to announce the successful completion of a critical infrastructure maintenance project in 2025 – the De-silting of the Pre-Cooling Channel and Circulating Water (C.W.) Intake Channel at the Dahanu Thermal Power Station (DTPS), located on the Maharashtra coastline.
This project was a significant milestone in our continued partnership with industrial and power generation clients to ensure uninterrupted operations, environmental compliance, and efficient water circulation systems.Project Location: Dahanu, Maharashtra
Situated along the Arabian Sea, Dahanu’s coastal environment poses unique challenges such as high sedimentation, marine growth, and seasonal silt deposition. The intake and cooling channels are vital components of the power station’s circulating water system, and their cleanliness directly impacts plant efficiency and safety.
Scope of Work
The de-silting project was undertaken to address:
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Heavy silt and debris accumulation in the pre-cooling channel
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Marine sediment and blockages at the C.W. intake point from the sea
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Flow restriction and reduced cooling efficiency observed during peak operation
Our comprehensive scope included:
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Hydrographic and underwater survey of the channels
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Sediment volume estimation and channel profiling
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Deployment of divers, pumps, grab buckets, and support vessels
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Manual and mechanized de-silting operations in tidal zones
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Environmental safety measures to prevent marine contamination
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Safe transportation and disposal of dredged silt
Challenges Overcome
Working in the open sea intake environment posed several operational challenges, including:
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Strong tidal currents and wave action during de-silting
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Limited operational windows due to changing tides
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Underwater visibility constraints for diver operations
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Careful coordination with plant operations to avoid downtime
Despite these, our experienced crew and advanced methodology ensured smooth, safe, and efficient execution.
Key Achievements
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Restored full hydraulic capacity of both channels
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Improved cooling system performance and reduced energy load
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Minimized marine growth and corrosion risk in intake systems
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Enhanced long-term reliability of the power plant’s water system
Client Satisfaction & Environmental Responsibility
Our client appreciated the timely completion, technical expertise, and environmental sensitivity demonstrated throughout the project. All activities were carried out in line with coastal and environmental regulations, with no disruption to marine life or plant operations.