phased assessment strategy for sewers

Phased Assessment Strategy for Sewers (PASS)

A Plan for Understanding Sewer Condition Quicker,With Fewer Resources

Are deteriorating infrastructure and dwindling budgets forcing you to reevaluate your sewer inspection program?

If so, it can be hard to know where to start, especially with limited bandwidth and resources. Here you’ll learn about a new workflow; one that will save your department money, help optimize resource utilization, and allow your inspection crews to focus their attention on the sewer assets that need it most.

Introduction

Expectations/Responsibilities

Municipalities are required to:

• Maintain an up-to-date understanding of collection system condition.

• Meet environmental regulations.• Prevent infrastructure failures (SSOs, residential backups, wet

weather discharges, costly and unpleasant emergency backups).• Prioritize maintenance activities.• Reduce maintenance costs• Reduce environmental impact

All with fewer and fewer resources

For decades we’ve used costly, time consuming CCTV as our sole tool for understanding pipe condition.

We can no longer afford to “do it the way we’ve always done it”.

This presentation outlines a game plan- to use our diminishing resources more effectively, using technology, resulting in greater productivity and better results.

Inspecting/Cleaning Smarter

Read the complete paper at envirosight.com/pass

http://www.envirosight.com/pass

Step 1: Technology Zoom Camera

Zoom survey cameras employ a video camera mounted on a telescopic pole to view deep within pipes from an adjacent manhole, as well as inspect the manhole itself. The technology uses high-powered optics and focused illumination

Zoom cameras don’t replace conventional CCTV inspection, but rather identify exactly which pipes need further investigation. Sewer lines don’t need to be cleaned before a zoom survey, and therefore can be assessed quickly by a single operator.



Step 1: Technology Zoom Camera

During Phase 1, you survey all your sewer pipes with a zoom camera. When defects are observed or the view is obstructed in a particular pipe, flag it for the next inspection phase.

• Determines next step for a section of pipeo In good conditiono Needs cleaningo Needs further inspectiono Needs rehab

• Helps determine proper tooling for cleaning and ensures efficient use of resources



Phase 1: Workflow



Step 2: Technology HD Video Nozzle

Cleaning is an important part of pipe maintenance, and an essential prerequisite for CCTV inspection. Any line that doesn’t pass Phase 1 needs to be cleaned to remove the grease and debris that interfere with a CCTV crawler. In many cases these obstructions are the only problem with the pipe, and a quick post-cleaning video nozzle assessment can confirm that no additional crawler CCTV is needed.

A video nozzle is a water-propelled HD camera that threads on the jetter hose, allowing rapid collection of detailed visual information about a pipe’s condition post-cleaning.



Step 2: Technology HD Video Nozzle

On average, only 65% of pipes surveyed with a zoom camera will require additional attention, which starts with cleaning. Once the cleaning crew finishes cleaning the line they can quickly assess if any defects are present in the sewer lines and make a recommendation as to whether the pipe segment should be thoroughly inspected using a CCTV Crawler, or marked as PASS.



Phase 2: Workflow



Step 3: Technology CCTV Inspection Crawler

For lines where a Phase 2 video nozzle inspection reveals pipe defects, a final CCTV camera crawler inspection is warranted. Crawler inspections reveal the highest level of detail.

CCTV inspections are essential for identifying and characterizing breaks, root intrusions, leaking water, and other kinds of deterioration. No inspection program can operate without a CCTV Crawler because of its unique ability to fully understand the problems inside a sewer pipe.



Step 3: Workflow



Benefits

To understand the benefits of this workflow, look at the productivity and cost advantages of a phased approach compared to comprehensive CCTV inspection.



Productivity Benefits



Cost Benefits



PASS in Review

PASS consists of a three assessment phases:• Zoom camera survey for 100% of pipes.• Video nozzle for 65% of pipes that need it.• CCTV crawler inspection for 25% of pipes that need it.

By implementing PASS, you can:• Boost productivity 17%• Reduce costs 34%



Will You PASS?

• Reduce costs

• Improve response time for inspection

• Reduce emergency call-outs

• Channel resources to where they’re needed most

• Make the best possible impact on the infrastructure, environment and community you serve



Learn more …

Want to learn more about PASS? Visit http://www.envirosight.com/pass to download the complete white paper.

Learn more about the technology behind PASS and request a free in-field demo by clicking below:

• Quickview airHD zoom camera

• Jetscan video nozzle

• ROVVER X sewer inspection camera



http://www.envirosight.com/quickview.php

http://www.envirosight.com/jetscan.php

http://www.envirosight.com/rovverx.php


phased assessment strategy for sewers

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