Apr 2012
Gas Distribution
Iron Mains Condition Assessment System
NIA_WWU_003
Complete
Apr 2012
Jul 2013
National Grid Gas Distribution and Wales and West Utilities
Ian Marshall and Lucy Mason (WWU)
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Network Innovation Allowance
GD - Reliability and maintenance
Condition Monitoring
£492,309.00
The scope of this phase is to develop the tool from the proof of concept tool of Phase 1 incorporating the following deliverables:

1. Increased number of sensors for greater pipe wall coverage and survey detail

2. Increased maximum survey length

3. Increased survey speed

4. Improved data capture, analysis and management software

The project objective is to develop, build and test a condition assessment tool to be used within cast iron mains. This tool will detect both internal and external defects in the pipe wall as well as the actual strain in the pipe wall continuously along the surveyed length. This phase develops on the demonstrated in the proof of concept , Phase 1, into a ‘full scale’ working prototype prior to further development for live entry into the network.

Successful demonstration of the defect and strain detection sensors and analysis through the completion of an extended survey of ˜200 m of abandoned 12” cast iron main.