Ask Your Mates Open Forum

Zoom Camera or CCTV Inspections for SWD Assets

  • 1.  Zoom Camera or CCTV Inspections for SWD Assets

    Posted 16 May 2013 21:02

    Hi 

    We are looking to condition assess a portion of our SWD network and are interested in getting the best value out of the available technologies;-Zoom Cameras and CCTV. 

    Is anyone using \ thinking of using Zoom cameras for inspection of Storm Water Drainage Assets? What is your experience? Could this be a total alternative to CCTV inspections or an initial cost effective method to allow for a more targeted CCTV Inspections? 

    I believe both IPWEA Practice Note 5 and WSAA code of SWD assets condition assessments are based on CCTV technology. Apart from that, what are the other limitations of Zoom Cameras that would hinder collection of condition rating information?  

    Last but not least; what benefits did you gain from using the Zoom camera technology?

     

    Thank you

     

    David

     

     

     

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    David Okunyah
    Assets Analyst
    Shire of Campaspe
    Echuca VIC

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  • 2.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 17 May 2013 00:58
    Hi David,

    I have consulted with Peter Way, IPWEA NAMS.AU Chair, who advises:

    Practice Note 5 highlights the use of both CCTV and Fixed Zoom cameras with the latter being particularly useful for an initial survey to identify sectiuons that may then warrant more detailed CCTV Survey.

    Obviously you cannot get the same amount of detail from the Fixed zoom camera but for a fraction of cost, they provide an excellent first pass and for much of the system, may be all that is needed.

    During the Training Workshops that IPWEA ran on PN5 at the end of last year, we heard many anecdotal stories of Councils doing some innovative work using the Zoom cameras.

    IPWEA is now working with some industry experts to develop a further Guide on the use of the Fixed Zoom Cameras and we will announce when that is ready for circulation.


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    Chris Champion
    CEO, IPWEA National
    Sydney NSW

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  • 3.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 19 May 2013 20:09
    David, Chris,

    We are starting to use Zoom camera technology to investigate/condition rate our drainage network.
    This is after having spent an exorbitant amount of money on cctv footage over the past few years for a significant portion of our drainage network (only technology available at the time).

    What we are already finding would verify Chris'/Peter's comments that the Zoom camera is a very cost effective first step. You can then use this to decide the much smaller number of pipes/pits that need detailed (and costly) cctv study.

    The zoom camera technology, with a properly trained operator provides very good coverage and by zooming in (focusing in) you can identify significant issues along a pipe (up to say 50 metres). You will not pick up all issues but get a good start on where to focus.

    I feel this technology (if used properly) can save councils a huge amount of money over time.
    By the way the cameras are about $25,000 but what good value this is. We should all have one (or one to share between a few neighbours - under "Council Collaborative Activities").

    Regards and good viewing!

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    Darron Passlow
    Asset Management
    Pittwater Council
    MONA VALE NSW

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  • 4.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 19 May 2013 20:07
    Dear all,

    From my point of view i have been more than happy with our zone camera and our 2 person crew has been surveying approx. 20 lengths of pipe per day and we expect to have over 50 % of our drainage assets surveyed in 6 months. Zoom cameras cannot do every thing but they can find most major faults. We are currently purchasing a magnetic pit lifter that should further improve productivity (why does no one sell these in Australia). 

    Cheers
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    Michael Casteleyn
    Stromwater Engineer
    Woollahra Municipal Council
    DOUBLE BAY NSW

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  • 5.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 19 May 2013 20:08
    Hi, David

    Our unit purchased a zoom camera about a year ago, and it has been used widely in our daily investigation. The initial purpose of purchasing this zoom camera is to investigate the defects caused by third party utilities e.g. Gas. A GIS based criticality analysis is currently guiding the investigation. We identified approximately 600 pipes might got intrusion and need to be checked. Unfortunately, we cannot afford check them all by using the tractor camera in the next couple of years. Zoom camera t is a very handy tool for such preliminary investigation on the stormwater pipe lines and saved lots of money/hours on such investigations. However, it cannot be a total alternative to the tractor camera due to such limits as:

    (1) In general, it can only check the line over DN225 as the camera head is too big to put into the benching;
    (2) It only suits for straight line (no bend, no deviate).
    (3) It can be used to observe the blockage and other major defects, but it is unable to provide many details about the actual condition of the conduit such as minor cracks and displacements.

    In such intrusion investigation practice, we can check 2-3 locations per hour including travelling. This is much quicker than using sea sneak and tractor camera, and can use to check the conduit where tractor camera cannot access due to obstruction. Therefore, for condition assessment, we still need tractor camera to acquire more detail information after using the zoom camera.

    All in all, Zoom camera can be a very useful tool in preliminary investigation and a good alternative for tractor camera, but it would not totally replace the roll of tractor camera in our practice.

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    Frank Chen
    Stormwater Assets Officer
    Hobart City Council
    HOBART TAS

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  • 6.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 20 May 2013 22:32
    Thanks everyone for sharing such useful information. Has anyone developed a specification for Zoom CCTV condition assesments\ Inspections that they can share?

    Thank you

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    David Okunyah
    Assets Analyst
    Shire of Campaspe
    Echuca VIC

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  • 7.  RE:Zoom Camera or CCTV Inspections for SWD Assets

    Posted 22 May 2013 09:53
    David,

    I was on the review group for "Code 5" and we had significant discussion about this. The consensus that I understood from the review group is that we should use the same condition assessment criteria and codes that are used with CCTV inspection (industry consistant descriptions and ratings) and understand the limitations of the zoom cameras in deriving those results.

    The camera details form part of the report header, so it is up to the "asset owner" to interpret the outcomes and react accordingly.

    The use of zoom camera to perform an initial screening for follow-up detailed review/confirmation by CCTV would seem to be best use of the combined technology options.

    The zoom cameras have some already noted difficulties and some limitations (like unable to look up laterals and interconnections or into joints to see voids etc) It is important to understand the different quality of data you are getting.

    The code is available to all WSA members and the new revision includes zoom cameras into the scope of use.


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    Lance Scriven
    Asset Performance Standards Officer
    Midcoastwater
    Taree NSW

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