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Cocoa, FL Electro Scan Demonstration
July 24th, 2014
Waste Water Reclamation Division
375 North Cocoa Blvd Cocoa, FL 32922
Tel: (321) 433-8739
Demonstration Report
July 24th, 2014
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About Cocoa, FL
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The Waste Water Reclamation Division of the City of Cocoa’s Utility Department is responsible for the following:
• 53 waste water pump stations (lift stations) and associated controls, check valves, and piping
• Nearly 100 miles of gravity sewers and force mains
• Nearly 50 miles of reclaimed water distribution mains and service lines to almost 2000 customers
City of Cocoa Electro Scan Demo
• 8” VCP sanitary sewers, laid at minor grade, with a light flow. Pipes were known to have issues.
• Objective: Determine if Electro Scan can identify and quantify any defects in the pipe that could contribute to infiltration.
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Cocoa City Scanned Piped Ranked by Worst Total GPM Flow
1 2
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Pipe With The Worst Total GPM Flow
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Interim Findings
• Two (2) Sewer Mains were surveyed in Cocoa using Electro Scan (ASTM F2550-13), totaling approximately 670 feet.
• The worst Sewer Main represents 73% of the Total Defect Flow
• Total Estimated GPM (By Area) = 11.70 GPM or 16,848 GPD - Large (0%) 0.00 - Medium (44%) 5.19 - Small (56%) 6.51
• Total Defect Count = 33 - Large (12%) 4 - Medium (0%) 0 - Small (88%) 29
Main Focus of Further Investigation. This refers to the size of the defect.
Interesting metric, but not as important
If no recent field investigation has been conducted, It is recommended that sewer mains showing the highest contribution to defect flow be televised or re-televised, instructing field crews to capture specific pan, tilt, and zoom features of identified anomaly footage locations, as the electro scan process does not indicate defect location by clock position.
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On-Site Demonstration
Pictures
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MH TD1 to MH TD2
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1
MH TD1 to MH TD2 1
TOTAL DEFECT FLOW: 8.49 GPM 9
MH TD2
End of Scan
(Downstream)
MH TD1 to MH TD2 Electro Scan Demo Site
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1
MH TD1
Start of Scan
(Upstream)
MH TD1 to MH TD2 Worst 10 Defects Based on GPM Flow
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1
MH TD1 to MH TD2 Scan Graph – 0 to 150 Ft.
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1
MH TD1 to MH TD2 Scan Graph – 150 to 300 Ft.
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MH TD1 to MH TD2 Defect Chart By Location In Pipe
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1
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MH TD1 to MH TD2 Defect Graph Vs. CCTV Report 1
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MH TD1 to MH TD2 Defect Graph Vs. CCTV Report (Cont’d) 1
Estimated Infiltration
Flow: 0.90 GPM
0.3’ (CCTV)
0.03’ (ES)
Estimated Infiltration
Flow: 0.43 GPM
9.9’ (CCTV)
10.41’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: Fracture Multiple 17
1
2
1
Estimated Infiltration
Flow: 0.63 GPM
10.6’ (CCTV)
10.69’
(ES)
Estimated Infiltration
Flow: 3.64 GPM
109.2’ (CCTV)
111.16’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: Fracture Multiple 18
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Estimated Infiltration
Flow: 0.15 GPM
155.3’ (CCTV)
156.2’
(ES)
Estimated Infiltration
Flow: 0.13 GPM
165.7’ (CCTV)
166.21’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: None 19
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1
Estimated Infiltration
Flow: 0.15 GPM
186.3’ (CCTV)
188.79’
(ES)
Estimated Infiltration
Flow: 0.61 GPM
238.0’ (CCTV)
241.75’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: None 20
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Estimated Infiltration
Flow: 0.18 GPM
289.4’ (CCTV)
292.39’
(ES)
Estimated Infiltration
Flow: 1.55 GPM
294.9’ (CCTV)
297.98’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: NONE
CCTV Callout: Fracture Longitudinal 21
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MH TD1 to MH TD2 Summary
• Electro Scan identified twelve (12) locations of potential infiltration throughout the length of this
pipe. This equates to a defect approximately every 25 feet, with an average potential infiltration rate of 0.7 GPM per defect.
• Total Estimated Leakage of the pipe inspected represents 8.49 gallons per minute, or 12,226 gallons per day, ±40% accuracy, assuming a 1 foot head over the top of the pipe.
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1
MH SR1 to MH SR2
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2
MH SR1 to MH SR2 2
TOTAL DEFECT FLOW: 3.21 GPM 24
MH SR1 to MH SR2 Electro Scan Demo
• 8” VCP sanitary sewer, laid at minor grade, with a light flow. Pipe length was approximately 370 ft.
• Objective: Determine if Electro Scan can identify and quantify any defects in the liner that could contribute to infiltration.
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2
MH SR2
End of Scan
(Downstream)
MH SR1 to MH SR2 Electro Scan Demo Site
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MH SR1
Start of Scan
(Upstream)
2
MH SR1 to MH SR2 Worst 10 Defects Based on GPM Flow
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2
MH SR1 to MH SR2 Scan Graph – 0 to 150 Ft.
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2
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MH SR1 to MH SR2 Scan Graph – 150 – 300 Ft. 2
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MH SR1 to MH SR2 Scan Graph – 300 - 370Ft. 2
MH SR1 to MH SR2 Defect Chart By Location In Pipe
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2
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MH SR1 to MH SR2 Defect Graph Vs. CCTV Report 2
Estimated Infiltration
Flow: 0.18 GPM
366’ (CCTV)
3’
(ES)
Estimated Infiltration
Flow: 0.14 GPM
108’ (CCTV)
264’ (ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: None 33
1
2
2
Estimated Infiltration
Flow: 0.12 GPM
52’ (CCTV)
319’ (ES)
Estimated Infiltration
Flow: 0.23 GPM
1’ (CCTV)
369.48’
(ES)
Sample CCTV Snapshots Overlaid with Electro Scan Readings
CCTV Callout: None
CCTV Callout: None 34
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MH SR1 to MH SR2 Summary
• Electro Scan identified twenty-one (21) locations of potential infiltration throughout the length of
this pipe. This equates to a defect approximately every 18 feet, with an average potential infiltration rate of 0.15 GPM per defect.
• Total Estimated Leakage of the pipe inspected represents 3.21 gallons per minute, or 4,622 gallons
per day, ±40% accuracy, assuming a 1 foot head over the top of the pipe.
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• Electro Scan identified 33 locations of potential infiltration throughout the 670 feet length of the two (2) pipes • Total Estimated Leakage of the two (2) pipes inspected represents almost 12 gallons per minute, or over 17,300 GPD, ±40%
accuracy, assuming a 1 foot head.
• Average estimated flow thru each defect is 0.4 gallons per minute (1,340 GPD), occurring approximately every 20 feet. The quantity of potential infiltration on these particular pipes should serve as an example of how Electro Scan is able to objectively locate and measure defects to help make better rehabilitation decisions. Quantitative data, like the data provided by Electro Scan, should be used to either determine the most efficient and cost-effective rehabilitation method or to determine which pipes warrant further investigation and inspection. Often times, Electro Scan can identify certain locations or lengths in the pipe that are significantly worse than the rest of the pipe. In cases such as that, rehabilitation methods such as spot repairs can be considered. These pipes have defects spread throughout their entire length, at almost every other joint, indicating that whatever rehabilitation method that is chosen should include the entire pipe. However, it would have to be compared, quantitatively, to the rest of the pipes in the system to determine its priority in a rehab plan. By utilizing all technologies available, rehabilitation budgets can be maximized, and infiltration removed from the system most effectively. As mentioned during the demonstration, in addition to helping to prioritize rehabilitation plans, Electro Scan is able (per ASTM 2550-13) to certify new construction and rehabilitation. With these pipes being scheduled to possibly be lined with a cured-in-place pipelining method, it is recommended that post-lining certification be completed using Electro Scan.
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Findings and Conclusions
• Identify and measure all sources of infiltration from cracks, bad joints, and defective service connections,
• Rank & prioritize sewer mains and laterals that should be repaired, relined, or renewed,
• Integrate with hydraulic modeling programs to re-calibrate model assumptions based on its estimated gallons per minute (GPM) of flow from defects,
• Certify point repairs, relining, and new construction (i.e. citing ASTM F2550 as part of any published work specification) to ensure that projects performed by third-party contractors are delivered without defects or leaks, prior to Acceptance.
As demonstrated during the presentations in Cocoa, FL, Electro Scan does not replace CCTV; however, it does confirm the limited use of television inspection. While visual inspection, aided by pan & tilt and 360o panorama capabilities, is recommended to identify alignment problems, cross bores, sags, fats, oils and grease, construction debris, and protruding service connections, television inspection is not recommended to identify sources of infiltration or exfiltration or as final Acceptance of point repairs, relining, or new construction projects.
Recommended use of Electro Scan include the ability to:
Originally approved in 2006, ASTM F2550 was recently
modified to expand its use to include ‘testing and
certification of pipe repairs, renewal, and new
construction.’ The revised standard was approved
October 1, 2013, by unanimous vote of Committee F36, for
renewal for a five-year extension.
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Conclusions
Top 10 Things To Know About Electro Scan
1. What is Electro Scan? 2. What Does It Tell Me (That We Don’t Already Know)? 3. How Does It Work In The Field 4. What Are The Key Components of Electro Scan? 5. How Does It Calculate GPM for Each Defect? 6. How is My Data Managed? 7. What Industry Standard Covers Electro Scan? 8. What Textbooks or Manuals? 9. Who is Backing Electro Scan? 10. What Major Awards Has Electro Scan Won?
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B. How Does It Work? Electro Scan is designed to automatically assess
non-conductive pipes (e.g. asbestos concrete, brick, clay, cement, plastic, reinforced concrete, etc.), where no electrical current should ever be able to “leak” or escape into the ground from inside the pipe – unless, of course, there is a crack or break in a pipe. Electro Scan’s technology utilizes a low voltage/high frequency patent-pending process to automatically find & measure defects not commonly detected by closed-circuit television (CCTV) cameras or acoustical devices. Using its international patent-pending technology that measures the variation of electrical current inside pipes, Electro Scan automatically locates and measures potential leaks in gallons per minute.
A. What Does Electro Scan Do, That CCTV Cannot? Answer: Find sources of
infiltration and cracks. Infiltration is a key factor causing Sanitary Sewer Overflows (SSOs) and Combined Sewer Overflows (CSO) caused by cracks & defects found in manholes, sewer mains, service connections, and laterals. Given the limitation of CCTV – i.e. not able to visually find leaks -- Electro Scan automatically finds , locates, and measures (i.e. in gallons per minute) the amount of infiltration (i.e. in gallons per minute) caused by defects. Electro Scan can also certify newly installed, recently repaired and rehabilitated pipe lining.
C. Who Has Endorsed or Used Electro Scan? Electro Scan has
undergone numerous U.S. EPA studies and found superior to CCTV in finding the location and quantification of defects that cause leaks. Electro Scan is the only company with products in compliance with ASTM Standard F2550-13, just approved for another five years by ASTM Committee F36. Winning international acceptance, Electro Scan has recorded nearly 1 million feet of scans in the U.S., England, Japan, Australia, and New Zealand, and represents the next generation in defect location and certification of pipeline repairs & rehabilitation, able to work in wet weather and dry weather conditions.
Electric “Spikes” Show Defect Locations,
Intensity & Estimated Gallons per Minute.
1. What is Electro Scan?
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2. What Does It Tell Me*?
* That We Don’t Already Know?
Estimated Infiltration
Flow: 5.2 GPM
Finds Defects Missed By CCTV
A. For Existing Mains & Laterals
Finds All Post-Rehab Defects
B. For Post-Rehab, CIPP & Points Repairs
87 Large Defects Total Estimated GPM 226
1 Large Defect No PACP Quantification
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3. How Does It Work In The Field?
0
10
20
30
0 100 150 200 250 300
DISTANCE
EL
EC
TR
IC C
UR
RE
NT
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Longitudinal
Crack
Radial
Crack
Defective Connection
Connection
OK
10
20
30
100 150 200 250 300
DISTANCE
EL
EC
TR
IC C
UR
RE
NT
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Electro Scan Probe and Funnel Plug pulled by Jet Truck at the rate of 45-60ft/min.
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Defective
Connection
4. What Are The Key Components? TV Truck - Field Application
TV Truck - Operator’s Console
Cloud Application
TV Truck – Scan Summary
Probe Funnel Plugs
Mobile Wi-Fi
Electro Scan Patch Panel and Data Transfer
Grounding Reel & Rod Electro Scan
CCTV Switchover
Probe Calibrator
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While ‘Large Current Readings over a Large Area’ often result in the largest estimated GPM or Defect Flow, frequently the largest estimated GPMs may be caused by smaller current readings over larger areas (Right). From 12,000 – 20,000 data points may be collected for an average 300 ft sewer main with Electro Scan representing the first automated tool to identify & measure leaks to the closed 1 centimeter or 0.4 inch.
Electro Scan’s standard Graph displays the Maximum Defect Current and Lengths (i.e. from and to start and end points of defects), with its Critical Sewers® cloud application providing an estimated Gallon per Minute (Defect Flow) based on the Defect Area and Electric Current sustained over that Area.
(Above) Sample processed data.
5. How Does It Calculate GPM?
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6. How Does It Manage My Data?
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All Lake County’s Data Was Uploaded And Immediately Available on Electro Scan’s Cloud Application.
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7. What Industry Standard Exists?
Originally approved in 2006, ASTM F2550 was recently modified to expand its use to include ‘testing and certification of pipe repairs, renewal, and new construction.’ The revised standard was approved October 1, 2013, by unanimous vote of Committee F36, for renewal for a five-year extension.
ASTM F2550-13
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8. What Textbooks or Manuals? “Electro Scan has proved
it belongs in our new edition by finding leaks
that CCTV can’t and renewing their ASTM
Standard*.”
Coming… October 2014 7th Edition
Kenneth Kerri, Ph.D.
Over 80,000 Copies Sold
Coming October 2014
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A. Best Innovative Technology, WEF
B. Best Innovative
Product, No-Dig NASTT
D. Best Clean Tech Company
C. Best Water & Sewer Company
9. What Major Awards Has It Won?
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10. Who Is Backing Electro Scan? Experience Expertise in business start-up, growth, and
mergers & acquisitions. Principal investor in Electro Scan Inc. Co-holder of numerous patent-pending filings,
trademarks, and trade names. Leadership, business counseling, and
turnaround management. Former Director & CEO of Hansen Information
Technologies. Sold to Infor Global $100 million. Electro Scan Company Awards Finalist, Europe’s GreenTec Award for Water &
Sewage (Announced May 2014) The New Economy Clean Tech Award for Water
& Wastewater Solutions, 2013 PURE Award for Innovation, South West Water,
UK, 2013 WEF Innovative Technology Award, 2013 Sierra Nevada Innovation Challenge Clean Tech
Award, 2013 SacAddy Award Best Marketing Campaign 2013 NASTT/No-Dig Joseph L. Abbott Jr., Award for
Best Product Innovation, 2013
Major Affiliations AWWA, NASSCO, NASTT, WEF, AOPA Chairman, ASTM Committee F36.20, Inspection and Renewal of Water and Wastewater Infrastructure (Feb 2014) Education MBA, UCLA, 1982 BS, U.C. Berkeley, 1978
About Chuck Hansen Chuck Hansen, age 57, is a Public Works and IT veteran, implementing some of the largest Asset Management, Building Permit, and Utility Billing applications for over 1,000 water, sewer, roadway, and railway clients throughout the world. When Chuck sold his software company in 2007, cumulative Hansen client databases held over 1 million closed-circuit television (CCTV) inspection reports, including over 6 million pipeline defects. In 1990, working with the City of Houston Wasteload Control Branch, Chuck co-developed the first national CCTV standard, used by +250 TV inspection trucks to conduct a comprehensive critical sewers database in response to a Region VI EPA consent decree. Chuck spearheaded development of the first asset-specific accounting system in response to new international financial standards in Australia and New Zealand, adopted by all local councils and utilities in New Zealand. Later, he led his international software programming team to design, development, and deploy, integrated customer service, billing, building permit, and property tax accounting systems. Partnering with San Francisco-based private equity firm Golden Gate Capital, Chuck doubled the size of his company over two-years through acquisitions, new web-based products, and international expansion, exiting the business he started with his father and older brother in 2007.
Chuck lives in Sacramento, California with his wife, Deborah, a civil engineer, his three daughters and grown son, nearby.
Chuck Hansen
1983-2006
2006-2007
2011-Present
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1745 Markston Road Sacramento, California 95825-4026
Email: [email protected] Office: 916-779-0660 | Fax: 916-779-0661
www.ElectroScan.com
Facebook www.facebook.com/Electro-Scan-Inc/214255938644317
YouTube www.youtube.com/SewerElectroScan
Twitter @electroscan
Instagram http://instagram.com/electroscannow
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References 1. US EPA Sewer Electro Scan Field Demonstration Revisited, Special Reprint from 2012 WEFTEC Conference Proceedings
http://www.electroscan.com/wp-content/uploads/2012/11/WEFTEC_US-EPA-Electro-Scan-Demonstration-Project.pdf
2. The Need to Quantify Pre- and Post-Rehabilitation Effectiveness
http://www.electroscan.com/wp-content/uploads/2014/08/2014-The-Need-to-Quantify-Pre-and-Post-Rehab-Effectiveness.pdf
3. ASTM Standard F2550-13
http://www.electroscan.com/wp-content/uploads/2014/08/F2550-13.pdf
4. Electro Scanning Technology Adds Another Layer of Inspection, Trenchless Technology Magazine, Published February 2013
http://www.electroscan.com/wp-content/uploads/2013/03/Trenchless-Technology-Mag_ES-Tech-Adds-Another-Layer-of-Inspection.pdf
5. Electro Scan Technology Test Drive, Municipal Sewer &Water Magazine, December 2012
http://www.electroscan.com/wp-content/uploads/2012/11/Electro-Scan_Technology-Test-Drive.pdf
6. Electro Scan Newspapers
http://www.electroscan.com/newspapers/
7. Municipal Sewer and Water Magazine
http://www.mswmag.com/
