Projects
Projects: Projects for Investigator |
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| Reference Number | NIA_NGGT0019 | |
| Title | Toughness of Fittings | |
| 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 | PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials) 50%; ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 50%; |
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| UKERC Cross Cutting Characterisation | Not Cross-cutting 100% | |
| Principal Investigator |
Project Contact No email address given National Grid Gas Transmission |
|
| Award Type | Network Innovation Allowance | |
| Funding Source | Ofgem | |
| Start Date | 01 February 2013 | |
| End Date | 01 February 2014 | |
| Duration | 12 months | |
| Total Grant Value | £100,000 | |
| Industrial Sectors | Energy | |
| Region | London | |
| Programme | Network Innovation Allowance | |
| Investigators | Principal Investigator | Project Contact , National Grid Gas Transmission (100.000%) |
| Web Site | http://www.smarternetworks.org/project/NIA_NGGT0019 |
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| Objectives | The aim of this programme of work is to carry out the research necessary to investigate and develop a generic methodology which builds on and extends existing methodology. The intent is to demonstrate that a fit for purpose material selection process has been adopted encompassing the latest thinking and techniques. The programme will define a clear and consistent rationale for specifying the temperature and toughness requirements for pipeline fittings. | |
| Abstract | The existing suite of National Grid specifications for the toughness of fittings for use on natural gas pipelines specify the temperature at which material toughness tests are to be carried out. The material toughness test temperature needs to be related to the minimum temperature which may be experienced in service. Historically, the minimum temperature was defined according to low environmental temperatures which may occur at above ground installations. Anomalies arise in the specification of this minimum service temperature, its relationship with the minimum design temperature and the defined material test temperature. Clarification of these temperature inter relationships will improve design and material selection. Deliverables will include: Preparation of a list of pipeline fittings and definitions of the range of operational conditions (pressure and temperature) the fitting may be exposed to under the range of conditions which could occur during commissioning and routine and non-routine operations. Review background to the speciation of toughness requirements in existing fitting specifications. Attention will be given to the minimum specified design and test temperatures for each type of fitting and the basis of the specified values, and a comparison with the range of operating conditions. Conducting a series of thermal analyses to investigate the material temperatures and the associated stresses which could occur due to Joule Thomson cooling under each condition for various fitting types. This work will include comparison with the results of recent tests at GL Noble Denton Spadeadam using carbon dioxide (CO2). Assessment of the influence of warm pre-stressing. Defining of any further work required to extend the existing toughness requirements for fittings in natural gas pipelines to CO2 pipelinesNote : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above | |
| Publications | (none) |
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| Final Report | (none) |
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| Added to Database | 17/12/18 | |
