1. Quality Assurance For Trenchless Pipeline Rehabilitation
Data and Decisions
QA is bigger than a single pipe.
Intro Andrew Pinello
Colorado springs
By,
Andrew Pinello

2. Today I wish to cover
Pipe Data
Decision Processes
Real world CIPP

3. 1,640 Miles of collection system pipe
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”)
This is how I see our system

4. Define Reinspection Schedule
Condition Analysis
Rehabilitation Required No
Manhole Inspection, CCTV Inspection & Cleaning
Yes
Determine Rehab Responses
Define Reinspection Schedule
Reject
How it all begins, ends and begins
Data Quality Review
Prepare Rehabilitation Design
Rehabilitation QA/QC Inspection
Perform Contracting
Perform Construction Management
Accept

5. Gather Data Methods NASSCO (PACP) Guidelines
Closed Circuit Television (CCTV)
Structural and O&M Rankings
Consider age of pipe, material, and maintenance history
Adherence to NASSCO PACP
Proper codes
Rate of speed
Flow level in pipe
Picture quality

6. Defect Grades / Response Codes Assigned
Structural
Cracks, Fractures, Holes, Corrosion, etc.
O&M
Grease, Roots, Obstacles, etc.

7. Indicates Severity – Structural Damage or Defects
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)
Numbers represent time.

8. 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.
Letters represent condition.

9. Discuss the culmination of history and observation and how it can be leveraged.

10. So now that I know “everything” about this line… What do I do?
Run what you want to do through the constraint tools and see what you will do.
Cost of point repairs vs. replacement.

11. Things to consider: Safety Access Work times What Will Work
Bypass Requirements
A few images to keep in mind during decision making

12. Can you answer the questions in public
Styrene
Are you good with it?
Can you answer the questions in public
Tell first hand why “I was told” isn't good enough

13. Become informed about what the finished product will look like.
Compare to previous similar situations
Use contractor submitted examples
Use consultant submitted examples
CIPP is a new pipe within the constraints of the old pipe
CIPP is NOT the host pipe
CIPP WILL reflect the host pipe in all aspects
CIPP will NOT change grade

14. Replacement can make more problems than it solves
What we want to avoid

15. The camera only shows what the operator looks at…
Why The camera Lies

16. Hospital 6” Before

17. Hospital 6” after

18. Before

19. After

20. CIPP
When data and decisions come together a lot can happen.