Program Overview
Striking a buried power cable or gas main during excavation can injure workers, interrupt critical services and halt a project. A cable avoidance tool used correctly is one of the most effective controls available, but only when the operator understands what the instrument can and cannot detect.
This two-day program focuses on the Radiodetection C.A.T4 and Genny4 combination widely used on construction and utility sites. Participants learn the electromagnetic principles behind passive and active location, how to read utility plans, and how to use Power, Radio and Genny modes systematically to sweep a work area. Outdoor practical sessions on a test field with buried services build confidence in marking out services before any ground is broken.
Learning Outcomes
- Interpret utility plans, symbols and site evidence to anticipate the location of buried services
- Explain the theory of electromagnetic cable location and the difference between passive and active signals
- Perform pre-use checks and calibration verification on the C.A.T4 and Genny4
- Use Power, Radio and Genny modes to sweep a work area in a systematic grid pattern
- Apply the Genny4 by direct connection or induction to trace non-radiating services such as plastic pipes with tracer wire
- Mark located services and apply safe digging practices consistent with HSG47 and OSHA excavation guidance
Program Modules
- Interpreting Utility Plans and Symbols — reading service records and recognizing their limitations
- Identifying Services on the Ground — surface indicators such as valve covers, street furniture and reinstatement scars
- Theory of Cable Location — electromagnetic fields, signal strength and the effect of depth and congestion
- C.A.T4 and Genny4 Controls and Displays — mode selection, sensitivity, audio response and on-screen indicators
- Calibration and Pre-Use Testing — self-test functions, battery checks and verification before use
- Power and Radio Sweeping — systematic sweep patterns to cover the whole work area
- C.A.T4 and Genny4 Compatibility — using the generator to apply a known signal and improve detection
- Correct Operational Procedures — marking out, recording and safe excavation practices
- Outdoor Practical — locating buried services on a designated test area under realistic conditions
Who Should Attend
- Excavation and civil works operatives
- Utility and telecom field crews
- Site supervisors and permit issuers for ground-breaking work
- Construction safety officers
- Plant operators working near buried services
Standards & Codes Referenced
- HSE HSG47 (Avoiding Danger from Underground Services)
- OSHA 2226-10R (Trenching and Excavation Safety)
- BSI PAS 128:2014 (Underground Utility Detection, Verification and Location)
Assessment & Certification
Each candidate completes a short written test on location theory and safe digging practice and a practical assessment in which they locate and mark buried services on a test area using the C.A.T4 and Genny4. Practical sessions take place at ASEEE-approved training centers.
Successful candidates are awarded the ASEEE competency certificate, issued with a unique certificate ID that employers and clients can verify online through Certificate Check. ASEEE recommends recertification every 3 years to keep competence aligned with current standards, equipment and site practice.
