Program Overview
Every excavation near buried services carries a risk of striking a live cable or a pressurized pipe. Utility plans help, but they are often incomplete or inaccurate. A competent locator operator closes that gap by confirming what is actually in the ground before the first shovel goes in.
This program trains operators to use the Radiodetection RD8000 receiver and transmitter correctly. Participants learn electromagnetic location theory, passive and active locating modes, peak and null techniques, and depth and current measurement. Field exercises on a training ground with buried services build the judgment to recognize distorted fields, adjacent-line coupling and other common sources of error. The course follows the safe digging approach of HSG47 and the excavation safety principles in OSHA 2226-10R. Participants also practice clear marking and handover, so that the excavation crew knows exactly what was found and what remains unconfirmed.
Learning Outcomes
- Interpret utility plans and recognize service symbols and markings
- Explain the electromagnetic principles behind passive and active cable and pipe location
- Set up the RD8000 receiver and transmitter, including menu configuration and pre-use checks
- Select appropriate modes and apply direct connection, clamp and induction techniques
- Use peak and null methods to pinpoint and trace buried services
- Measure depth and current and judge when readings are reliable
Program Modules
- Utility Plans and Ground Symbols — reading service records, surface indicators and marking conventions
- Theory of Electromagnetic Signal Transmission — how signals radiate from conductors and why frequency choice matters
- Setting Up the RD8000 — menu system, calibration verification and pre-use inspection of receiver and transmitter
- Operational Modes of the RD8000 and Transmitter — power, radio and active frequencies, and direct connection, clamp and induction methods
- Understanding Display Readings — signal strength, gain, compass and guidance indicators, and current direction
- Peak and Null Methods, Depth and Current Measurement — pinpointing, tracing, identifying the target line and validating depth
- Service Detection Techniques for Buried Utilities — sweep patterns, congested areas and confirming findings before excavation
Who Should Attend
- Excavation and civil works crews
- Utility locating technicians
- Site supervisors and permit issuers for ground disturbance
- Surveyors and subsurface utility engineering staff
- Telecom and pipeline field technicians
Standards & Codes Referenced
- HSG47
- OSHA 2226-10R
- PAS 128:2014
- ASCE 38-22
Assessment & Certification
Assessment combines a written examination on electromagnetic locating theory, instrument operation and safe digging practice with a practical assessment in which each participant locates, traces and marks buried services on a training ground with the RD8000, including depth and current readings. Practical sessions take place at ASEEE-approved training centers, using calibrated equipment and realistic work scenarios under the supervision of a qualified assessor.
Participants who meet the competency criteria receive an ASEEE competency certificate carrying a unique certificate ID that employers and clients can verify online through Certificate Check. ASEEE recommends recertification every 3 years to keep skills aligned with current practice and revised standards.
