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Projects: Projects for Investigator
Reference Number	NIA_CAD0037
Title	Composite repairs for through wall defects on metal pipes
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 Cadent Gas
Award Type	Network Innovation Allowance
Funding Source	Ofgem
Start Date	01 April 2019
End Date	30 September 2021
Duration	ENA months
Total Grant Value	£200,687
Industrial Sectors	Energy
Region	London
Programme	Network Innovation Allowance
Investigators	Principal Investigator	Project Contact , Cadent Gas (100.000%)
	Industrial Collaborator	Project Contact , Cadent Gas (0.000%)
Web Site	https://smarter.energynetworks.org/projects/NIA_CAD0037
Objectives	Stage 1 – Proposal of Standard and Verification Test RequirementsThis will include a technical review to summarise the state of the art of current understanding and to prepare a proposal for a standard repair that will then be verified by testing. The base line procedure proposed will enable future innovations and products to be assessed as well as qualifying a specific system for immediate application. The procedure will include methods to account for thermal loading and self-weight of pipes supported on, like river crossings.Stage 2 – Measure Adhesion of Composite Repairs to Iron PipesThis will include measuring bond strength achieved on cast iron, spun iron, ductile iron and steel lines prepared by both bristle blasting and hand tools. Stage 3 – Stop-Gap Method VerificationThe aim of this stage is to look at several techniques and quantify their capability to provide the temporary relief and also their suitability for use with a composite repair. Stage 4 – Measure Energy Release Rate Achieved between Composite Repairs to Iron Pipes The aim of this phase is to characterise a design methodology based on the bond performance in terms of an energy release rate. Stage 5 – Full Scale Verification of Standard Design Including Stop-Gap TechniqueDuring this stage, a further six tests will be completed on lines containing typical through-wall defects. The tests will therefore demonstrate the overall suitability of the standard design, its ability to work with the stop-gap techniques and its practical installation.Stage 6 – Final ReportThe results from the programme will be used to verify the proposed qualification framework is suitable and sufficient for identification and validation of repair approaches for iron lines. Additionally, a standard design for repairs to low, medium and intermediate pressure lines will be finalised for use in the field. The project comprises six phases with the first phase being to baseline a standard method of composite repair including test requirements and a detailed test plan. The final phases of the project will progressively test the new standard and starting with yard trials at TEAM site, which will be reinforced in parallel with Cadents G23 to form the basis of a Management Procedure for implementation of the repairs including selection of repair systems and competence of installers. 1. Develop a standard design method for a composite repair for deployment on the low and medium pressure systems (including thermal and self-weight loads) where the damage has:• not yet gone through-wall.• resulted in a leak.2. Measure bond strength achieved on cast iron, spun iron, ductile iron and steel lines prepared by both bristle blasting and hand tools. 3. Analyse several stop – gap methods and quantify their capability to provide the temporary relief and also their suitability for use with a composite repair. 4. Quantify the energy release rate achieved between composite repairs to iron pipes.5. Verify the proposed qualification framework is suitable and sufficient for identification and validation of repair approaches for iron lines.
Abstract	Above ground pipework is exposed to the elements, resulting in possible degradation from corrosion; known as external metal loss. Support structures can concentrate rates of corrosion around the pipe as they often begin to corrode before the pipe. This technology can offer the potential of a permanent repair to pipe and reduce the number of costly replacements. A permanent repair will also offer significant reduction in environmental impact and reduce large scale works, protecting staff from higher risk activities and the public from increased disruption.
Publications	(none)
Final Report	(none)
Added to Database	09/11/22