CCTV Drainage Integrity Surveys

However complex your drainage system our surveyors provide the most comprehensive CCTV Drainage Integrity Survey Service available.

Historically this service has been carried out by specialist drainage companies and it has been necessary for architects/engineers/developers to treat this work as a separate contract. It is now possible for us to not only provide a fixed price quotation for CCTV drainage survey contracts, but also an all-in price for CCTV integrity survey/underground services trace/ground penetrating radar and topographical survey.

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WinCan CCTV Report

The CCTV Drainage Integrity Survey includes for:

• the location and mapping of the above-ground drainage features using GPS and Total Stations,
• proving route alignment and connectivity using Radiodetection,
• filming drainage run condition with high resolution cameras (for pipes up to 1.5 metres diameter) and providing in CD or DVD format,
• providing colour video report on WinCan Software to Water Industry Standards
• providing report and site drawing output in Abode PDF and Autocad DWG and DGN formats.

We have recently completed a CCTV Survey at Wick Road, London, E9.

The purpose of the drainage survey was

' to obtain drainage asset information pertinent to improve surface runoff and preventing flooding of the drainage network. The survey report and supporting documentation will be used as a guide to engineers for future improvements of the carriageway.'

The drainage details to be included in the survey were

'Gullies (actual size and orientation), manhole invert and cover levels, pipe outlets (inverts and diameters), cover sizes to be drawn to scale and orientation, manhole internal survey (including pipe sizes and direction of flow) and culverts (inverts and soffit levels).'

The Site: Wick Road is a dual carriageway and it was necessary for us to carry out all elements of the survey with traffic management in place and 'out of hours'.

Our surveyors co-ordinated all of the site work and there were four stages to the survey.

• Our survey teams carried out a full topographical survey of the site area.
• Our drainage surveyors supervised the 'jetting-out' of the main drainage runs and gullies and they surveyed the drainage connectivity using radiodetection.
• They positioned the pipe runs and the gully connections and they completed the gully and manhole schedules.
• They completed the camera surveys and as they had worked closely with the jet cleaning crew they were able to ensure that each drainage pipe has been cleaned adequately to successfully film the runs.

Topographical Survey with CCTV Survey Click here to download a copy (Client: Transport for London)

Gully Schedule Click here to download a copy

Deliverables: Included colour video of the drainage runs to Water Industry Standards, Wincan CCTV Report, Gully and Manhole Schedules and DWG and PDF Files of the topographical and drainage survey cross-referenced to the CCTV Report.

All of our drainage surveyors hold CSCS Cards, are CRB checked and hold Certificates for Confined Space Entry, OS19 Pipe & Sewer Classification, Chapter 8 Signing, Guarding and Lighting, First Aid and Manual Handling.

Site Health and Safety requirements are documented and approved by Citation plc - http://www.citation.co.uk

We are actively involved as members of The National Sewerage Association - http://www.sewerage.org

High Pressure Jet Cleaning

To ensure that the CCTV filming is of good quality and all defects/blockages in the drainage runs are identified at time of survey it may be necessary to jet clean the pipework prior to filming.

We work closely with Hydro Cleansing Limited, whose Head Office is in Croydon, and has Depots throughout the South East. Their 'state of the art' combination tankers., supervised by us, provide the necessary high quality cleaning and collection of arisings necessary to provide a first class drainage integrity survey.

The combination tankers enable high pressure, high volume jetting plus powered vacuum tankering. High pressure jet cleaning the drainage runs and removing silt and debris from deep soakaways, culverts, wet wells, digesters, cesspits, septic tanks, interceptors and klargesters.

Cleaning with a trailer-mounted jetter is a cheaper option but is only practical in domestic situations for pipe sizes up to 150mm diameter where it is not necessary to dispose of the debris, only move it from one place to another. Also the limited water capacity of a trailer mounted jetter precludes it's use on larger sites.

Environmental legislation demands that silt and debris removed from drainage systems must be disposed of using a recognised waste management system and to a licensed facility. This process is documented to protect our clients and ourselves, and to ensure that all waste removed from a site/premises has been disposed of within the legal requirements.

We provide quotations for CCTV Drainage Integrity Surveys on a fixed priced basis and we provide a day rate for high pressure jet cleaning. Our survey teams work on-site with the jetting engineers and ensure that the pipework is cleaned adequately for filming. We will give an indication of the time and cost for jet cleaning plus the cost of the disposal of the arisings. This can only be an estimate as we have no knowledge of the drain condition prior to the contract and the type of contaminants that may be present in the drainage system. Waste disposal certificates are provided on completion of each contract for record purposes and your, and our, obligations to 'Duty of Care'.

All CCTV surveyors and jetting engineers hold Confined Space Entry Certificates and Method Statements and Risk Assessments are provided before site attendance.