MSI Inspection in Wellington | TDG Environmental

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MSI Inspection in Wellington

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Scope

TDG conducted a comprehensive assessment of the interceptor using Multi-Sensor Inspections (MSI), incorporating HD CCTV, Laser Profiler, and Sonar transducer technologies to evaluate corrosion or losses along the pipewall in a 360-degree fashion, alongside a general condition assessment.

Challenges

Addressing challenges posed by high-level and high-velocity flow during MSI unit deployment and retrieval.
Managing noise disturbances from aircraft traffic.
Coping with severe wind gusts prevalent in Wellington.

The outcome

Client was extremely pleased with the comparison reporting clearly showing the severe rate of degradation.
The pipeline was escalated for relining.

Industry

Sewer & Water Authorities

Location

Wellington

Project Highlights

Proactive Identification: Through proactive identification, the TDG Team detected severe corrosion, initiating a comparison report spanning inspections from 2013, 2018, and 2020, which revealed substantial increases in wall loss percentages (2013 = 16%, 2018 = 26%, 2020 = 28%), validating the effectiveness of MSI technology and underscoring the necessity of ongoing inspections for infrastructure planning and budgeting.
Prominent Waterfront Location: Undertaken in a high-profile waterfront setting, the project presented unique challenges and heightened visibility.
Innovative Reporting: Pioneering the development of a comparison report with the Red Zone, TDG presented findings to the client, quantifying progressive pipe wall degradation over three consecutive inspections.

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