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Projects: Projects for Investigator
Reference Number	NIA_NGN_425
Title	Hydrogen compatibility of components - Phase 2: Further analysis
Status	Completed
Energy Categories	Fossil Fuels: Oil Gas and Coal(Oil and Gas, Refining, transport and storage of oil and gas) 10%; Hydrogen and Fuel Cells(Hydrogen, Other infrastructure and systems R&D) 90%;
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 Northern Gas Networks
Award Type	Network Innovation Allowance
Funding Source	Ofgem
Start Date	01 August 2023
End Date	31 March 2024
Duration	ENA months
Total Grant Value	£126,841
Industrial Sectors	Energy
Region	Yorkshire & Humberside
Programme	Network Innovation Allowance
Investigators	Principal Investigator	Project Contact , Northern Gas Networks (99.996%)
	Other Investigator	Project Contact , Wales and West Utilities (0.001%) Project Contact , Cadent North West (0.001%) Project Contact , Northern Gas Network (NGN) North East (0.001%) Project Contact , SGN - Scotland (0.001%)
	Industrial Collaborator	Project Contact , Wales and West Utilities (0.000%) Project Contact , Cadent Gas (0.000%) Project Contact , SGN (0.000%)
Web Site	https://smarter.energynetworks.org/projects/NIA_NGN_425
Objectives	"The project will be delivered through the below 7 Work Packages:WP1: Review of NGN NIA 276 assessment outcomes Obtain individual assessments which failed the assessments from NGN Review inputs of each Assess materials rating for each component in the asset assembly which fails the assessment Collate an initial list of prioritised failed components and materials Sensitivity study for evaluation in natural gas (e.g. known and specific locations; location; failure history) and for component in hydrogen (Load level; consequence level) Evaluate any components which contribute to asset assembly failure due to the material failing the secondary gas-facing criterion ♦ D0: Prioritised list of failed materials ♦ D1: overview of sensitivity study and effect of key variables on pass/fail criteriaWP2: Review of Materials literature and rating system Focus on materials scoring with a high degradation level, and identified in for example in Table 1 above. These are also listed under the red list in the NIA 276 reports Re-visit the underlying data sources such as gas pressure, test conditions, etc and confirm initial materials rating assessment Limited literature search for newly arising data for susceptible network materials in representative hydrogen environments Discussion with network operators to better understand the use of trade-name sealants and their characterisation according to relevant standards ♦ D2: Update of materials degradation scoring if additional / new exists to enable thisWP3: Workshop on Loading and Consequence Better understand the loadings applied to different components within families of identified asset assemblies in conjunction with NGN Case studies on loading conditions across a range of components, also including a workshop with NGN Review the consequence classes and their appropriateness in a workshop environment with NGN♦ D3: Update of loading conditions and consequence classes where the data permits thisWP4: Experience from other industries Identify other industries utilising materials in a gaseous hydrogen environment Establish contacts and question set Information from industry on experience of range of materials in hydrogenWP5: Identification of improvements to method Improvements in the natural gas scoring Improvements in the hydrogen scoring Re-evaluate selected case studies from NGN set of assessmentsWP6: Testing plan for susceptible materials Up to and including 2 bar Up to and including 7 bar Metals, polymers, elastomers ♦ D4: test planWP7: Final report ♦ D5: Summary reportThe project is rated low in the common assessment framework detailed in the ENIP document after assessing the total project value, the progression through the TRL levels, the number of project delivery partners and the high level of data assumptions. No additional peer review is required for this project.In terms of ensuring success, the deliverables from each work package will be reviewed by the steering board and technical experts from within NGN network, where relevant. An interim report will be provided to the HSE, to ensure it meets their expectations and so that any feedback can be incorporated before project close. Data quality and measurement requirements will be adhered to inline with OFGEM requirements, RIIO2 NIA Governance requirements and those set out within the Energy Networks Innovation Process document." " Review of NIA 276 output and identification of unsuitable materials. Review of material literature and assessment justifications, with comparison to real world operational requirements. Develop recommendations for testing of materials and testing programme (Stage Gate) Propose a testing plan for materials to determine suitability of operation at: o Up and including 2bar o Up to and including 7bar Compile results and final reports, including risk mitigation appraisal and guidance for wider standards development (ie. IGEM)" "WP1: Review of NGN NIA 276 assessment outcomes Obtain individual assessments which failed the assessments from NGN Review inputs of each Assess materials rating for each component in the asset assembly which fails the assessment Collate an initial list of prioritised failed components and materials Sensitivity study for evaluation in natural gas (e.g. known and specific locations; location; failure history) and for component in hydrogen (Load level; consequence level) Evaluate any components which contribute to asset assembly failure due to the material failing the secondary gas-facing criterion ♦ D0: Prioritised list of failed materials ♦ D1: overview of sensitivity study and effect of key variables on pass/fail criteriaWP2: Review of Materials literature and rating system Focus on materials scoring with a high degradation level, and identified in for example in Table 1 above. These are also listed under the red list in the NIA 276 reports Re-visit the underlying data sources such as gas pressure, test conditions, etc and confirm initial materials rating assessment Limited literature search for newly arising data for susceptible network materials in representative hydrogen environments Discussion with network operators to better understand the use of trade-name sealants and their characterisation according to relevant standards ♦ D2: Update of materials degradation scoring if additional / new exists to enable thisWP3: Workshop on Loading and Consequence Better understand the loadings applied to different components within families of identified asset assemblies in conjunction with NGN Case studies on loading conditions across a range of components, also including a workshop with NGN Review the consequence classes and their appropriateness in a workshop environment with NGN♦ D3: Update of loading conditions and consequence classes where the data permits thisWP4: Experience from other industries Identify other industries utilising materials in a gaseous hydrogen environment Establish contacts and question set Information from industry on experience of range of materials in hydrogenWP5: Identification of improvements to method Improvements in the natural gas scoring Improvements in the hydrogen scoring Re-evaluate selected case studies from NGN set of assessmentsWP6: Testing plan for susceptible materials Up to and including 2 bar Up to and including 7 bar Metals, polymers, elastomers ♦ D4: test planWP7: Final report ♦ D5: Summary report"
Abstract	The output of NIA_NGN_276 highlighted a range of materials that, through assessment of relevant literature, have been categorised as having a high potential for degradation in hydrogen, rendering the asset assembly unsuitable for use with hydrogen without further mitigation. The assessment of materials utilised an assumption-based approach that classified a material as unsuitable due to a lack of literature, or possible variance in actual operation between literature and physical networks operating parameters.A number of the materials highlighted are prevalent on existing gas infrastructure. The aim of this project is to undertake follow-up review of the outputs and results from the subsequent network assessments, including recommendations to undertake further evaluation of materials of construction, risk mitigation options and propose a testing plan for certain materials.
Publications	(none)
Final Report	(none)
Added to Database	01/11/23