Standage, CCTV Surveying and drainage renovations

The Task In Hand:

AJS Environmental was called upon to carry out a CCTV Survey of a council estate that is undergoing renovation works by Standage part of the scope of works was to carry out a CCTV Drainage survey. After receiving the site drawings, a surveying team was sent to the estate in London to carry out the full site survey reporting any defects found. Once the surveying had been completed a full WinCan VX report was created and sent to the client. The client highlights the areas on the report it which they wish to have works carried out on.  This included a 13 linear metre cured in place pipe, a 1 linear metre patch repair and high pressure water jetting cleaning works.

The works started with carrying out the high pressure water cleaning of the highlighted drainage runs on the report. A jetting team was sent to site along side a surveying team to clean and survey the highlighted areas on the report, as you can see from the photos large amounts of debris including a 2 litre bottle have been pulled out and removed from the drainage system helping prevent any future blockages. With large amounts of debris in the system this puts it at risk of blocking and potential flooding. A lining crew met the current teams on site the following day to install the 13 linear metres of liner and a 1 linear metre patch repair. Before the liner is installed the jetting crew uses the high pressure water jetting unit to clean out the section of pipe work where that liner will be installed. A final look on the CCTV Camera to check the pipe is fully clear and to determine which type of liner will be installed. Once the lining team have prepped the liner to be installed it is dragged into place an inversion tube is inverted into the liner moulding it to the existing pipes shape and left to set under pressure. After the liner has cured and set into place the inversion tube is deflated and pulled out leaving the new liner set into place. The surveying team carries out a survey on the newly installed cured in place pipe to provide evidence to the client of the works carried out.

All teams relocated to another area on the estate to install the 1 linear metre patch into the 100mm pipe. The process is similar to installing a drag liner. The jetting and surveying team follow the same processes as before, once teams have completed the works the lining team coats the fibre glass sheet in resin and wraps the patch around the packer to be pushed into place. Using a compressor, the packer is inverted moulding the patch to the pipes current shape in result minimalizing loss in diameter leaving the flow restored. After the patch has cured into place the packer is deflated and pulled out of the pipe allowing access for the surveying team to carry out a survey for the client. On completion of the works a report was produced and sent to the client in which they was highly satisfied in the works carried out and the quality that they were carried out to.

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