data and decisions qa is bigger than a single pipe
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Quality Assurance For Trenchless Pipeline Rehabilitation. Data and Decisions QA is bigger than a single pipe. By, Andrew Pinello. Today I wish to cover Pipe Data Decision Processes Real world CIPP. Service Area – 204 Sq Miles 15 Lift Stations 33,000 Manholes - PowerPoint PPT PresentationTRANSCRIPT
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Data and DecisionsQA is bigger than a single pipe.
Quality Assurance For Trenchless Pipeline
Rehabilitation
By,Andrew Pinello
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Today I wish to cover
Pipe Data Decision ProcessesReal world CIPP
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• Service Area – 204 Sq Miles• 15 Lift Stations• 33,000 Manholes• 1,640 Miles of collection
system pipe– 18 Miles Interceptors (42” – 84”)– 90 Miles Trunk Lines (18” – 36”)– 160 Miles Collectors (10” – 15”)– 1,400 Miles Local Collector (<10”)
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Manhole Inspection,
CCTV Inspection & Cleaning
Data Quality Review
Rej
ect
Accept
Determine Rehab
Responses
Condition Analysis
Prepare Rehabilitation
Design
Rehabilitation Required
Yes
Define Reinspection
Schedule
Perform Contracting
Perform Construction Management
Rehabilitation QA/QC
Inspection
No
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Gather Data • Methods• NASSCO (PACP)
Guidelines• Closed Circuit
Television (CCTV)• Structural and O&M
Rankings • Consider age of pipe,
material, and maintenance history
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StructuralCracks, Fractures, Holes, Corrosion, etc.
Defect Grades / Response Codes Assigned
O&MGrease, Roots, Obstacles, etc.
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Condition Grades Definitions
1 Excellent: Minor defects (failure unlikely in the foreseeable future)
2 Good: Defects that have not begun to deteriorate (pipe unlikely to fail for at least 20 years)
3 Fair: Moderate defects that will continue to deteriorate (pipe may fail in 10 to 20 years)
4 Poor: Severe defects that will become Grade 5 defects in the near future (pipe may fail in 5 to 10 years)
5 Immediate Attention: Defects requiring immediate attention (pipe has failed or will likely fail within the next five years)
Indicates Severity – Structural Damage or Defects
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Indicates Criticality – Targeted Time Frame for Rehabilitation
Response
Response Codes Schedule
A Requires immediate attention
B Requires near term repairs or maintenance in 90 to 180 days
C Requires repairs or maintenance to be completed within 1-2 years
D Re-inspect within 3-5 years
E Perform a re-inspection within 15 years of the initial inspection.
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So now that I know “everything” about this line… What do I do?
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Things to consider:SafetyAccessWork timesWhat Will WorkBypass Requirements
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Styrene Are you good with it?
http://www.styrene.org/ http://www.epa.gov/ttnatw01/hlthef/styrene.html http://www.osha.gov/SLTC/styrene/index.html
Can you answer the questions in public
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•Compare to previous similar situations•Use contractor submitted examples•Use consultant submitted examples
Become informed about what the finished product will look like.
•CIPP is NOT the host pipe •CIPP WILL reflect the host pipe in all aspects•CIPP will NOT change grade
CIPP is a new pipe within the constraints of the old pipe
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Replacement can make more problems than it solves
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The camera only shows what the operator looks at…
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CIPP When data and decisions come together a lot can happen.