leak detection of critical watermains in the city of hamilton · leak detection of critical...
TRANSCRIPT
TRENCHLESS TECHNOLOGY ROADSHOW May 28-29, 2014 – Scotiabank Convention Centre, Niagara Falls, ON
Leak Detection of Critical Watermains in the City of HamiltonChris Martire, Robinson Consultants Inc.
Michael Zantingh, City of Hamilton
Introduction• Critical water distribution network consists of:
• 74 km (46 miles) of PCCP (cyan)
• 101 km (63 miles) of Metallic (blue)
Introduction
• The City’s water distribution network consists of 2015 km (1250 miles) of watermains
• The City has completed the Risk Ranking of its Metallic (Cast Iron and Ductile Iron) and PCCP watermains
• prioritize their assessed condition in order to rank pipelines based on their assessed level of risk
• Initiatives underway within the City• Leak Detection of Critical Network of watermains• Condition Assessment of PCCP watermains
Leak Detection TechnologiesSmartball Leak Noise Correlators
SaharaLDS 1000
Important to the City• Five Key operational elements:
1. Minimal impact on operations2. Completed within a reasonable length of time3. A reasonable cost for the product, 4. The level of detail for leak location and size5. Additional services such as available CCTV
RFP Document ‐ Scope1. The work is to be executed without alteration or
gaining internal access to the watermains and is to involve minimal to zero operational impact to the City.
2. Term of Contract:
3. 69 Pipelines @ 175 (km110 miles)
4. Size range:
5. Large Valve Chamber inspection
1 year + ( 1 + 1) years??
2250 mm (90 inch)
400 mm (16 inch)
RFP – Scope ‐ Specs1. Minimal impact
2. Length of time3. Cost for the
product, 4. The level of detail 5. Additional services
1. Executed without internal access and negligible operational impact
2. 3 year Contract 3. 69 Pipelines @ 175 km
(110 miles)4. Size range: 16” – 90”5. Valve Chamber inspection
RFP – Specifications• The work is to be executed without alteration or gaining internal access to the watermains and is to involve minimal to zero operational resources.
RFP – Components• The RFP called for the deployment of Leak Detection inspection equipment broken down into four primary components:
Mobilization Pre‐screening
Data Acquisition Data Analysis
RFP Doc ‐ Deliverables
• Monthly Status Report
• 24‐Hour Report
• Pipeline Leak Detection Report
Monthly Status Report• Summary of the work accomplished to date
• Description of project activities • Summary of findings to date• Overall status of the project • Indicates whether program is on track and on schedule
24‐hour Report• A report to the City within 24‐hours of the identification of a leak of sizeable magnitude that should be addressed immediately by the City and include as a minimum:
Leak parameters: location, magnitude, watermain material and diameter;
Provide on‐site assistanceto the City as requested;
Other information deemed necessary.
Pipeline Leak Detection Report• Summary of analyzed data from Pipeline Leak Detection:
• Results of the Leak Detection inspections
• Spreadsheet and charts showing the distribution of located leaks along the watermain
• GPS coordinates of all suspected leak locations
• Results of valve chamber visual inspections
Contract Award• Leak detection program intended as a scanning tool to assess risk and prioritize capital investment
• Address the 5 key operational elements
• Contract awarded to Echologics
Leak Noise Correlators
Leak Detection Deployment• Pre‐inspection of all valve chambers from this
To this
Valve Chamber Inspection• Condition of valve chambers • Condition of valve
chambers after cleaning
Leak Detection Deployment• Web based progress tracking
Leak Detection Deployment• Simultaneous Leak detection of watermains
– Several expected with CI and DI
– Few expected with PCCP
Equipment Set Up
Leak DetectionInspection Results – April/14
Leak DescriptionEstimated Water Loss
(gpm)
1 Water leaking from storm drain hitting the pipe Unknown
2 Leaking water service off of main branch Unknown
3 Leaking Air Release Valve 1
4 Leaking Air Release Valve 1
5 Leaking Air Release Valve 1
6 6” Corporation Stop within chamber 5
Progress to Date
Parameter Summary
Chambers Inspected 164
Quantity of Pipelines 8
DI pipe 0 m
CI pipe 8,486 m
PCCP pipe 19,318 m
Project Start Date: November 11, 2013Current Period: March 21, 2014 to May 1, 2014
