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Projects: Projects for Investigator
Reference Number NIA_SGN0023
Title Cured In-Place Pipe (CIPP) (Stage 2)
Status Completed
Energy Categories Fossil Fuels: Oil Gas and Coal(Oil and Gas, Refining, transport and storage of oil and gas) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 August 2013
End Date 01 January 2016
Duration 31 months
Total Grant Value £1,730,796
Industrial Sectors Technical Consultancy
Region South East
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , SGN (99.997%)
  Other Investigator Project Contact , Wales and West Utilities (0.001%)
Project Contact , Northern Gas Networks (0.001%)
Project Contact , Cadent Gas (0.001%)
Web Site http://www.smarternetworks.org/project/NIA_SGN0023
Objectives The objective of Stage 2 is to test and validate against the Stage 1 documents, under controlled conditions, a range of available CIP lining solutions with the goal of establishing the generic approach as ‘fit for purpose’ as a rehabilitation technique for iron gas mains up to 2 bar. It is expected that the CIP performance specification and best practice guide will be refined during this stage, and that the tests may identify a development gap for certain technologies ahead of their acceptance. The test programme will embrace the lining materials, the installed liner, and installation practice together with the evaluation of a range of routine maintenance activities (e. g. flow stopping, connections, jointing and repair). The project will be deemed to be successful if the following criteria are met: Production of a contractor certification scheme. Successful completion of field trials after 12 months from commencement of the project. Production of a revised risk assessment framework. Identification of a range of CIP technologies and solutions deemed ‘fit-for-purpose’ as a remediation approach for iron mains up to 2 bar pressure over a range of diameter classes from 8" to 36". A cost benefit analysis of the new technology against current methods.
Abstract In January 2012 the gas distribution networks (GDN) jointly initiated a project to explore the potential use of cured-in-place (CIP) liners and polyurethane spray linings as a method of permanent rehabilitation of ageing iron distribution mains. The CIP technique is a method whereby a host pipe is lined with a flexible tube which is impregnated with a thermosetting resin, which produces a tough pipe lining after resin cure. The resin may be cured using various techniques including steam, hot water and UV light. The technique was developed in the mid 1970’s and is now used extensively throughout the world, with at least 30,000 kilometres installed to date. A range of technical solutions are being considered including non-structural, semi-structural and fully structural, the last of which might be deemed a permanent replacement solution where it does not rely on the host pipe. Early indication from this project (Stage 1), based on International experience and standards, and indeed limited legacy deployments on the GB network, has given a level of confidence that the technology can meet, or can be developed to meet, specifications and installation standards for the GB gas network at acceptable cost. This has been confirmed by suppliers as part of Stage 1. Limited visual examination of UK samples of a Paltem CIP lined 12" steel gas main installed in the early 1980s shows the liner to be in good condition, giving further confidence on the expected service life of such systems. The aim of Stage 2 is to test and validate against the Stage 1 documents with the goal of establishing the generic approach as fit for purpose as a rehabilitation technique for iron gas mains up to 2bar. In order to meet the objectives of this stage in the project the following tasks must be successfully delivered: Task 1. Project promotion and supplier engagementTask 2. Testing of exhumed Paltem CIP linerTask 3. CIP liner gap analysis and technology selectionTask 4. Provision or modification of test rigsTask 5. Audit of existing testing resultsTask 6. Manufacture all CIP liner samplesTask 7. Short-term testing and analysisTask 8. Site trials of CIP liner systems Task 9. On-going site trial monitoringTask 10 Long-term accelerated testing of each system trialled (Part 1)Task 11. Long-term accelerated testing of each system trialled (Part 2)Task 12. Underground loading trialsTask 13. Review of CIP performance specification and best practice guideTask 14. Risk assessment frameworkTask 15. Develop a ‘fit-for-purpose’ Certification Scheme Task 16. Final review of CIP performance specification and best practice guideNote : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 09/08/18