Electromagnetic Pipe Locators

GPRS’ team of elite Project Managers utilize a variety of advanced technologies to locate buried utilities.

One of the most important tools at our disposal is the electromagnetic (EM) locator.

This device detects the electromagnetic signals radiating from metallic pipes and cables. The EM locator’s transmitter can apply an electrical current to the pipe to create a signal which can then be detected. The signal can also come from current flow in a live electrical cable, or a conductive pipe acting as an antenna and re-radiating signals from stray electrical fields and communications transmissions. 

EM locators work well in concert with ground penetrating radar (GPR) to full Visualize the Built World™ underneath our feet. But as with many pieces of sophisticated technology, EM locators work best when operated by highly trained technicians.

Each member of GPRS’ nationwide team of over 400 Project Managers has completed the industry-leading Subsurface Investigation Methodology (SIM) program. This standard operating procedure includes specifications for underground utility locating and concrete scanning.

SIM focuses on a three-step approach to achieve the most accurate results when performing non-destructive subsurface testing:

• The need for experienced technicians
• The understanding and proper utilization of applicable technology
• The adherence to proven methodologies

SIM establishes the industry standard that utility locating currently lacks. The use of SIM ensures site safety, and limits damage to subsurface and structural elements.