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CCTV & Sonar Survey
CCTV & Sonar Survey
To inspect the internal conditions of pipeline and box culvert with a camera which installed on a wheel tractor or propeller and can travel along various type and size of pipeline and box culvert, the internal condition can be recorded in form of video and photo.
CCTV及聲納檢測
CCTV及聲納檢測
使用安裝在輛車體或螺旋槳上的攝像機檢查管道和箱涵的內部狀況，適合各種類型和大小的管道和箱涵，可以從視頻和照片中記錄內部狀況。
Underground Utilities Survey
Underground Utilities Survey
To locate and identify all underground utilities, including power and telephone cables, gas, water, drainage and waste pipes, by Non-destructive method and provide utility mapping with the depth and position of these utilities.
- Utility Survey for underground utilities
- Cable Detection by Competent Person (CP) under Cap.406H
- Topographical Survey
地下管線探測
地下管線探測
通過非破壞性方法定位和識別所有地下公用設施，包括電力和電話電纜、煤氣、水、排水和廢物管道，並提供這些公用設施的深度和位置的公用設施映射。
- 地下公用設施的公用事業調查
- 合資格人士(CP)根據香港法例第406H章進行電纜檢測
- 地形測量
Pipe Rehabilitation by Trenchless Technology
Pipe Rehabilitation by Trenchless Technology
The main purpose of Cured-In-Place-Pipe (CIPP) Lining is to repair the damaged pipeline without excavation, which greatly reduces the impact on the public and traffic, and also reduces noise from engineering and machinery working for long periods of time. Another advantage is that the durability of the CIPP Lining is much higher than the original pipeline, water flow efficiency has also increased by more than 20%.
Normally a lining operation can be completed in less than one day.
- Full Lining by CIPP method
- Part/Patch Lining
GPR (Ground Penetrating Radar) Survey
GPR (Ground Penetrating Radar) Survey
Ground Penetrating Radar (GPR) is the general term applied to techniques which employ radio waves, typically in the 1 to 1000 MHz frequency range, to map structures and features buried in the ground (or in man-made structures). Historically, GPR was primarily focused on mapping structures in the ground; more recently GPR has been used in non-destructive testing of non-metallic structures.
管綫雷達探測
管綫雷達探測
探地雷達（GPR）是通用術語，適用於使用無線電波（通常在1至1000 MHz頻率範圍內）來繪製埋在地下（或人造結構）的結構和特徵的技術。從歷史上看，GPR主要集中在繪製地下結構;最近，GPR已用於非金屬結構的無損檢測。
Manhole Survey
Manhole Survey
To Investigate manholes & to provide detailed information for the design and construction of drainage works and data are recorded in a standardized Manhole Card.
沙井測量
沙井測量
調查沙井併為排水工程的設計和建造提供詳細資訊，數據記錄在標準化的沙井卡中。
Water Leakage Detection (LNC)
Water Leakage Detection (LNC)
Leak Noise Correlation (LNC) is a method to pinpoint the leak spot in pressurized water main. Typically, Leak Detection on Underground Communal Service of Housing Estates or acoustic sound sensors are placed in contact with the pipe, at two or more points, to record the sound emitted by a leak somewhere between the points. The sound data is processed through a mathematical algorithm which compares or correlates the two recordings to determine the difference in the times it takes noise to travel from the site of the leak to each of the sensors. If the distance between the sensors is known in advance, this timing information can be used to determine the location of the leak.
管道滲漏探測(LNC)是一種查明加壓水管中洩漏點的方法。通常，住宅區地下公共服務中的洩漏檢測或聲學聲音感測器與管道接觸，在兩個或多個點上，以記錄點之間某處洩漏發出的聲音。聲音數據通過數學演算法進行處理，該演算法比較或關聯兩個記錄，以確定雜訊從洩漏部位傳播到每個感測器所需的時間差異。如果事先知道感測器之間的距離，則此定時資訊可用於確定洩漏的位置。
High Pressure Water Jet Cleaning
High Pressure Water Jet Cleaning
Drain jetting is a high-pressure cleaning method for blocked drains and sewer pipes. It works by pumping water (which is stored in tanks) through a high-pressure hose fitted with a jetting nozzle. This process forces powerful streams of water into the pipeline, allowing technician to target blockages and dislodge them.
管道高壓水清洗
管道高壓水清洗
管道高壓水清洗是一種用於堵塞的排水管和下水道管道的高壓清潔方法。它的工作原理是通過裝有噴射噴嘴的高壓軟管泵送水（儲存在水箱中）。這個過程迫使強大的水流進入管道，使工程人員能夠瞄準堵塞物並將其清除。
Vacuum Suction Desilting / Water Diversion
Vacuum Suction Desilting / Water Diversion
A vacuum tankeris a tank truck that has a pump and a tank. The pump is designed to pneumatically suck liquids, sludges, slurries, or the like from a location (often underground) into the tank of the truck. The objective is to enable transport of the liquid material via road to another location. Vacuum trucks transport the collected material to a treatment or disposal site, for example a sewage treatment plant.
污水及渠道沉積物清理
污水及渠道沉積物清理
抽真空卡車是一種帶有泵和儲罐的車。該泵設計用於將液體、污泥、泥漿等從某個位置（通常在地下）氣動吸入卡車的儲罐中。目的是通過公路將液體物料運輸到另一個位置。抽真空卡車將收集的物料運送到處理或處置場所，例如污水處理廠。
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