MICS entails inspecting the interior of manholes, which provide access to underground sewer or drainage systems. Skilled personnel enter the manholes to visually assess their structural integrity, identify defects, and evaluate their overall condition.

 

The survey helps in detecting issues such as cracks, blockages, or corrosion, enabling timely maintenance and repair. It ensures the efficient functioning of the drainage system, minimizes the risk of failures or flooding, and aids in long-term infrastructure planning.

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MICS涉及檢查通往地下污水或排水系統的井孔內部。受過訓練的人員進入井孔，目視評估其結構的完整性、發現有否缺陷並評估整體狀況。

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該調查有助於發現裂縫、堵塞或腐蝕等問題，從而及時進行維護和修理。它確保排水系統的有效運轉，最大限度地減少故障或洪水的風險，並有助於長期基礎設施規劃。