Current drain and sewer inspection systems are almost unrecognisable from those of 40 years ago. Today’s tools range from pole cameras and push-rod systems to high-definition cameras mounted on tractor units, floats, and even drones. While the challenge of getting a CCTV camera into and along a pipe has largely been solved, the age-old problem of accurately and objectively interpreting what the images portray, in terms of asset condition assessment, remains paramount.
To support the upskilling of the UK water industry, WRc now offers a one-day Awareness Training course for individuals engaged in operational maintenance and sewer rehabilitation, as well as engineers, consultants, and regulatory officials who need to understand the findings of sewer CCTV surveys. This course provides technical knowledge on sewer deterioration, the use of CCTV condition surveys, and their application in sewer rehabilitation planning. Covering the key aspects of sewer inspection, attendees will gain an overview of the MSCC coding structure, learn to recognise key features, and understand the correct use of the codes and how the associated condition grading is generated using the WRc SRM methodology.
WRc created the first image coding structure in 1980, setting the standard for interpreting key defects and coding them in a consistent format. This initiative resulted in the publication of the Manual of Sewer Condition Classification (MSCC) coding structure, now in its fifth edition. However, there remains a critical need to train surveyors in interpreting captured footage and correctly coding and classifying observed defects according to the MSCC. This knowledge ensures a pipe’s internal condition can be consistently assessed and graded to prioritise repairs, maximising investment and maintenance budgets.
It is essential that high-quality training at all levels is implemented and maintained to ensure accurate coding of defects and that the generated reports reflect a reliable condition assessment of the drain or sewer under review. Operators should seek the OS19X certification in coding CCTV defects, and all those involved in an inspection must have a robust understanding of how the survey was conducted, how the codes were attributed, and how the internal condition grade is calculated. This knowledge, alongside familiarity with the standards, is crucial for making well-informed decisions regarding any necessary remedial actions.
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