Broadband Electro‐Magnetics BEM BEM technique for Advanced Condition Assessment and Pipe Failure Prediction of Water Infrastructure Advanced Applications for BEM – September 2014 1 BEM Overview • Derivative of the ‘pulse eddy current’ system • Established geophysical exploration technology • Modified for NDT inspections of metallic infrastructure • Non‐frequency dependent • Ability to scan through thick coating / lining (1” +) • Contact with metallic surface not required • Patented Technology Advanced Applications for BEM – September 2014 2 EM Signal Penetration Antenna Pipe Wall Cross‐section EM Signal Penetration Antenna Pipe Wall Cross‐section EM – Signal haracteristics EM Signal Conversion Changes in signal amplitude correspond to changes in volume of metal under sensor Signal‐to‐thickness conversion applied Post‐survey data processing provides ‘apparent’ metal thickness for each sensor (data point) BEM Results 350 300 250 200 BEM 150 100 50 Intensity 0 0 50 100 150 200 250 300 350 400 450 500 550 Modes of Application Hand Scanning (HSK) Inline PIG Inspections Crown Assessment Probe (CAP) Keyhole Inspection System (KIS) Hand Scanning Kit (HSK) Hand Scanning Kit (HSK) nefits o need to take pipe offline ernal & external scanning options o diameter or shape restriction 0% coverage of pipe surface assessed ne man operation possible anual scanning allows for independent d isolated testing. WHAT IF MANNED ACCESS IS NOT AN OPTION? ‐Line PIG Inspections Pipe Inspection Gauge) ‐Line PIG Inspections Pipe Inspection Gauge) Antennae positioned to take readings whilst travelling through the pipe (remotely or manually controlled) Off The Shelf, or Can be custom built for any diameter Up to 90 degree bends OK 100’s metres surveyed from single entry point Most cost effective for long lengths/large rown Assessment Probe CAP) rown Assessment Probe CAP) rown Assessment Probe CAP) Assess pipe corrosion at the crown, such as acid attack on sewers, internal level fluctuation or external coating damage Excavated (or vacuum excavated) to crown No manned entry required Quick assessment, allowing more locations to be scanned within a budget compared to full circumference or 100% coverage scans. eyhole Inspection System KIS) eyhole Inspection System KIS) eyhole Inspection System KIS) Developed in collaboration with GTI (Gas Technology Institute) Automated Switcher & HSK 300 (or higher) operation Excavated (or vacuum excavated) for full circumference No manned entry required Quick assessment, allowing more locations to be scanned within a budget compared to large excavations or in‐line scans. www.rocksolidgroup.com [email protected]
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