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Leaks & Permeability In AN ELECTRO SCAN PUBLICATION. ALL RIGHTS RESERVED. ISSUE No. 10, SEPTEMBER 2018 Utility Managers & Ratepayers Benefit From New Pipeline Construction Specifications New Construction Standard for Leak Testing Electro Scan’s Impacts New Pipe, Repairs, & CIPP Acceptance Matt Campos “Independent testing & certification of pipelines as Since neither acoustic nor visual inspection are able prepares to watertight using Focused Electrode Leak Location (FELL) to hear or see most leaks, many pipes were assumed by test a CIPP eliminates the guesswork and reduces the risk of failure their owners & managers to be watertight, only to find lined pipe. from poor installations,” stated Ken Kerri, Ph.D., P.E., leaking joints, bad connections, leaks inside manholes, former Program Director, Office of Water Programs, Cali- and defective service laterals - all major contributors to fornia State University, Sacramento. sewer overflows or non-revenue water losses, without knowing precise locations of each defect. Traditionally, Contractors were allowed to make repairs, install new pipes, and rehabilitate existing ones, with lit- ASTM Standard F2550, ISO Quality, and Electro tle, if any, testing of their work; especially after customer Scan’s patented Focused Electrode Leak Location service laterals were installed or connected. (FELL) technology changed all that. Continued on Page 23 Partners See Pages 14-19 WRc* Case Study Finds Infiltration Leaks & Permeability in Missed By CCTV FELL Finds 63 Sources of CIPP Liners Are Located & Infiltration, CCTV Finds 1 The Challenge Quantified in GPM By FELL A major water company had a problem with When Electro Scan first got started in 2011, the company infiltration into its gravity sewer network, was most often asked, ‘How does it work?’ Today, the most which began to overwhelm a pumping station frequently asked question is, ‘Where was this 40 years ago to the point it could not cope with flow, par- when Cured-In-Place Pipe (CIPP) was first introduced?’ & ticularly during the winter season. As a result, contingency measures (tankers) had to be put ‘What ASTM Standard can we add to our CIPP specification?’ GOOD in place, at great expense and disruption. In 2010, Ken Kerri, Ph.D., P.E., Program Director, Office of The Solution Water Programs at Calif. State University, Sacramento, was the The services of WRc were engaged to first to mention his former students were having problems with provide a survey of the 150mm diameter recently installed CIPP liners that were “OK’d” by Closed-Cir- CIPPDoes Not Allow Electric Current pipe using Electro Scan’s technology. This cuit Television (CCTV) Inspection, but were leaking. To Pass Through CIPP Liner. advanced sensor allows the location (within 1cm) and quantification of defect flows from As shown (Right) on a recently exhumed CIPP, no electric current cracks, bad joints, and poorly-made connec- should ever pass through a liner. Electro Scan is able to test full- tions. It works by introducing a small current length liners – from manhole-to-manhole – covering 360-degrees into the water, with the locations of infiltra- of the liner wall, in minutes. ASTM F2550 is the new quality assur- tion identified where the current escapes to ance & quality control standard to test CIPP as watertight. earth. The larger the dissipation of current to earth, the larger the defect. Electro Scan’s technology is proven to detect infiltration missed by conventional CCTV surveys. The Outcome INSIDE THIS EDITION Over a survey length of 600m, Electro Scan detected 63 sources of infiltration. A City of Racine, WI Calibrates FELL & Flow Meters .........2 CCTV survey performed simultaneously FELL Replaces CCTV After Missing 80-100% of Defects ....3 found just one. Furthermore, Electro Scan City of Parsons, KS – Purchases ES-620 ..........................5 discovered that 80% of the infiltration was Spray-In-Place Pipe Rehabilitation Assessment ........6 BAD Allows Electric Current to Pass restricted to just three sections of pipe. As City of Roseville, CA – Purchases ES-620 .........................6 a result, the water company could line these Through a CIPP Trenchless Technology Webinar .............................................7 Liner, But Not three sections, rather than the entire 600m Seen By CCTV. pipe run, providing a cost-effective solution Post-Disaster FELL Assessment ...........................................7 CIPP to relieve flow on the pumping station. Pre- and Post-CIPP Flow Reductions With Grout .......8 FELL to Certify Pressurized Water Mains .........................9 Post-CIPP for Hi-Rise Condos ................................................9 HTMA & Borough of Shippensburg, PA ...........................10 RAKWA, UAE - Project Update ..............................................11 Adding FELL to CIPP Specifications ...........................12-13 Welcome Aboard .........................................................................20 Leak Detection for Pressurized Water Mains .............21 Breaking News ...............................................................................22 * Developers of NASSCO CCTV Codes. 2 Accurate. Fast. Repeatable. Pipe Assessment Made Easy Using Electro Scan Eliminate Biased Observations, Third-Party Data Interpretation, PRE-REHABILITATION POST-REHABILITATION And Missed Defects By Utilizing Machine-Intelligent Technology Before rehabilitating pipelines, make sure you have correctly prior- itized which pipes should be fixed and why. High Density Prestressed Asbestos Vitrified Clay Cured-In- Grout Spray-In-Place Spiral Wrap Using legacy testing methods to Cement Pipe Polyethylene Concrete Place Pipe ‘inspect’ old pipes and to ‘certify’ Pipe Cylinder Pipe Pipe Pipe Pipe new pipes, cities risk repairing the Electro Scan FELL is Poor mechanical or fused Electro Scan represents CIPP liners may not be FELL is now preferred Locking individual wraps unique in its ability to joints are the Achilles heel the only technology able to watertight and defects not over using traditional is key to any successful wrong pipes and accepting defective geometrically map the of HDPE, and not seen by reliably & consistently find seen by certified operators packers to test joints for Spiral Wrap Pipe project, remaining wall, i.e. CCTV cameras or heard & measure leaks in GPM. using CCTV cameras. As water tightness, due to with problems not identi- new pipes the day they are put in the corrosion of ACP. by acoustic data loggers a result, ASTM F2550 FELL’s Non-Destructive fied by CCTV. While other devices may should be added to CIPP Testing (NDT) of joints, ground. or sensors. But, found & attempt to locate corroded In contrast, Electro Scan Finding & Measuring quantified by FELL in specifications to ensure laterals, and cracks. FELL inspection can wire mesh that may or may pipe quality & integrity. Pipe Corrosion accordance with ASTM not indicate a weakness in find defects to individual Using Electro Scan’s F2550. the pipe wall, Low Voltage couplings. Machine-intelligent technology Patented Data Conductivity represents a It doesn’t matter whether LEAKS is here. Replacing less accurate game-changing solution you evaluate VCP from the Analytics to provide unbiased leak outside or inside of a pipe, DEFECTIVE Acoustic Data Loggers, CCTV, Gas DEFECT CURRENT locations & severity for CCTV, Laser, LIDAR, MISSED each defect. Sonar, GPR, or Acoustic, BY (NEW) SIPP Tracer, Smoke & Dye Testing to are not able to detect or CCTV eliminate the risk of replacing ‘good’ measure defect flows. pipes with ‘bad.’ Evenly Spaced Defects Accurate to 3/8th of an inch or 1cm Defects OK’d By Indicate Unlike air testing, FELL with defects identified in Gallons does not force any CCTV Problem PINHOLES added pressure on joints or Per Minute or Litres Per Second, Joints. ELECTRO SCAN ASSESSES laterals. Since air testing Found LOW MEDIUM HEAVY can open joints, shift pipes, Electro Scan is accurate, fast, repeat- 100% OF JOINTS and even temporarily By FELL correct out-of-round able, and proven. Call us today! CORROSION Electro Scan’s FELL is conditions in plastic pipes DEFECT FLOW the only technology, repre- as areas around joints are senting a Non-Destructive inflated, packers are no As demonstrated by Test (NDT) able to follow Common Pipe Materials o longer recommended for independent bench- a 90 pipe bend to locate a testing the quality of joints marks, since acoustic pathway for water to enter or laterals. Assessed By Electro Scan and transient pressure Superior to acoustic and or exit a pipe. sensors are unable to electromagnetic sensors, ABS Acrylonitrile-butadiene-styrene provide detail geo- Electro Scan’s Low Volt- By measuring the change GOOD ACP Asbestos Cement Pipe metric assessments age Conductivity detects in current and the amount SOAKAGE of pipe walls, and leaks other technologies of flow, the size of the GROUT BRK Brick therefore unable to miss. opening can be computed estimate remaining and translated into an All Readings CMLSP Cement Mortar Lined Steel pipe walls, Electro estimated GPM. Above 1,000 amps CON Concrete Scan represents How PCCP Fails? a game changing CIPP Cured-In-Place Pipe solution to assess & prioritize ACP. DIP Ductile Iron (w/Protector 401) FRP Fiberglass Reinforced Pipe Area of FRPM Fiberglass Reinforced Polymer Detail SIX-MONTH OLD Below GRP Glass Reinforced Pipe RECOMMENDED USE: DEGRADED HDPE High Density Polyethylene To Find & Quantify Leakage From GROUT ORP Orangeburg Pipe • Accelerant Burns What Electro Scan • Accidental Cuts PB Polybutylene Concrete
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