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Projects: Projects for Investigator
Reference Number NIA_NGGD0096
Title Mechanical Purge End Fitting
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%;
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 March 2017
End Date 01 April 2018
Duration 13 months
Total Grant Value £260,999
Industrial Sectors Technical Consultancy
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , Cadent Gas (100.000%)
Web Site http://www.smarternetworks.org/project/NIA_NGGD0096
Objectives This is a proposal to replace the EF top tee and end cap, which are single-use products, with a reuseable mechanical fitting. Specific success criteria are: design and manufacture of prototype units resulting in successful proof of concept laboratory testingFitting achieving 20 uses before requiring servicing or replacement during field tests
Abstract During the process of laying PE pipe, the sections of new main must be purged to gas in accordance with T/PR/ML/41 Chapter 7. However, conventionally this process of direct purging requires the use of two electrofusion fittings, a top tee to purge through and an end cap. The process of installing these fittings is both time consuming and wasteful, as these fittings must be cut off and disposed of following this process. The project will involve the following elements / stages;2. 1 Final Design and manufactureInitially, 2no. prototype fittings to be produced for review with NGGD stakeholders & initial physical testing, pull off, pressure, damage at Rosen. This will allow agreement of the final prototype design and manufacture 50 units for proof of concept testing through lab testing and field trials. 2. 2 Development of G23 Develop a G23 document to agree draft purge end operating procedures and requirements for field trials. 2. 3 Showcase Event Run a showcase event, for up to ten people, at Rosen facilities, where managers and other interested parties from NGG, Operations, and Plasson can inspect the mechanical purge end fitting and ask any questions about the use, testing, removal, and reuse of the fitting. 2. 4 Laboratory Tests Carry out agreed laboratory testing, including;Pressure Testing,Flow tests,Impact tests,Integrity tests following multiple uses. All tests will be performed using air as the test medium and will use 90 mm SDR 17. 6 PE pipe. 2. 5 Above Ground Trial Run an above ground trial/demonstration, where NGG staff and operations team leads who will be using the 90mm fittings in the field can see how they are fitted and removed, see the testing being carried out, and raise any queries or issues with their use. Team leads will have the opportunity to receive basic training and try out the production fittings during the trial. The above ground trial will use the final production fittings. Feedback from the trial will provide input to development of the training package and G23 documentation. 2. 6 Field Trial Operative Training and Field Trial Supervision Develop a training package for the purge end and provide this training for NGG and operations personnel involved in the field trial. The training will be carried out in the field on the first installation planned for each team, for a maximum of 5 operational teams. An installation video will also be prepared and made available to operational teams involved in the trials. A number of installations and use of the purge ends for each team will be supervised to ensure that the installations and operations are being carried out safely. A data capture form will be developed, to be completed and returned following each operation. Each purge end will be allocated an identification number in order for tracking to be carried out. 2. 7 Post-Use Fitting Assessment At various intervals, a section of pipe, with the fitting still installed, will be removed and transported to for post-installation assessment. This will include pressure testing, disassembly, and examination of all components to inspect for damage incurred during installation and use. 2. 8 Final Reporting A final report will be provided covering all stages of the work, including the results of the laboratory testing, findings from the installation supervision, and the post-use fitting assessments.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 12/09/18