Cable Avoidance Tools (C.A.T), or cable or utility locators, are electronic devices used in construction, excavation, and utility maintenance to locate and avoid underground utilities such as electrical cables, water pipes, gas lines, and telecommunication cables. These tools are crucial for preventing accidents, minimising damage to existing infrastructure, and ensuring workers’ safety. A cable detection tool comprises two main components, a transmitter, and a receiver. The transmitter sends out a signal detected by a receiver. The operator uses the receiver to trace the signal and locate underground utilities. Additionally, cable avoidance tools use GPR technology to scan the ground and detect the presence of buried objects. GPR sends electromagnetic waves into the desired location and measures the reflections to create a subsurface image.
Essential Modes for Efficient Cable Avoidance Tools Operation
CATs use three modes for the effective location of utilities:
- Power Mode: A CAT can only locate live wires or cables; therefore, the cable must have power for easy scanning.
- Radio Signals Mode: The CAT uses radio signals for locating/detecting various types of cables and pipes and often uses signal generators (Genny) for pinpointing different valves and utilities.
- Signal Generator Mode (Genny): Genny is used in conjunction with CAT for efficient location and detection of various sockets or valves.
Benefits of Using Cable Avoidance Tools
Cable avoidance tools are handy and indispensable for construction, excavation, or utility maintenance professionals. These electrical test and measurement devices enhance safety, save costs, improve efficiency, and ensure regulation compliance. Additionally, using a cable avoidance tool contributes to the success of construction projects and the protection of workers and critical infrastructure on various job sites.
Advanced Cable Avoidance Tool Types
A cable avoidance tool comes in various versions with critical features and specifications. Some of the popular CAT types include:
- CAT4+ (Cable Avoidance Tool 4+) – The CAT4+ is a popular cable avoidance tool that provides basic cable and pipe locating capabilities that help users detect and trace buried utilities through electromagnetic detection and signal induction.
- gCAT4+ (Generator Cable Avoidance Tool 4+) – The gCAT4+ is an enhanced version of the CAT4+, offering improved cable and pipe detection features and functionality. It may include additional modes and settings for better accuracy and long-lasting previous data history. The device also comes equipped with advanced features, such as Bluetooth connectivity and autonomous usage logging for later analysis.
- SuperCAT4 – The SuperCAT4 is another advanced cable avoidance tool designed for professionals who need high-precision utility locating in specific environments. It typically offers features like depth measurement, signal distortion alerts, and data logging for more comprehensive utility mapping.
- Leica DD120 – The Leica DD120 is a cable and pipe locator Leica Geosystems produces. It is known for its reliability, improved pinpoint detection, and ease of use, making it suitable for both novices and experienced professionals.
- Leica Ultra Locator – This high-end cable avoidance tool offers advanced features and capabilities for precise utility locating. It may include GPS integration, advanced signal processing, and real-time data visualisation.
Typical Applications of Cable Avoidance Tools
Cable avoidance tools can be industry-specific and find versatile applications in various facilities, including:
- Construction and Excavation
- Road and Street Repair
- Landscaping and Groundwork
- Pipeline Maintenance
- Utility Locating
- Surveying and Mapping
- Environmental Monitoring
- Emergency Response or Repairs (gas leaks, electrical faults).
