04:23 Wed 15 May 2019
Haydale Graphene Ind - National Grid benefit analysis
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('Haydale' or the 'Group')
National Grid benefit analysis shows high level of confidence in Haydale's composite transition piece
Haydale (AIM: HAYD), the global advanced materials group, has been working with National Grid to calculate the benefit case of its Composite Transition Piece (CTP), using a method developed by National Grid and verified by PwC during a previous audit.
This approach provides a risk rating for the benefits. In this case the risk was assessed by National Grid as 'low', meaning that National Grid can have a high level of confidence in the results it will achieve.
There are around 300 locations on the National Transmission System where gas pipes pass through reinforced concrete walls, for example into valve pits. Currently, several types of seal are used to prevent contamination by water or soil, but when these seals fail technicians face a major task to fix the problem.
National Grid has found that Haydale's CTP represents a huge step forward in safety and efficiency, solving a major problem for the national gas transmission network at a reduced cost over the systems life-time. The solution allows easy access to transition pipes at pit wall transitions for inspection and maintenance. Working in conjunction with National Grid, the innovative CTP seal units can be used to plug the gap between the pipe and the wall. It means that technicians can easily remove the unit and check the pipe for corrosion or damage. The CTP can then be replaced quickly in one simple operation.
Financially, the benefits of installing a CTP are significant especially when viewed over the entire design life of the unit. Taking less time to inspect the pit wall area with a CTP fitted means that just under
In addition to the cost benefits, National Grid estimates that 700 fewer hours of 'at risk' activities will be needed for each CTP during its design life. Working on the pit wall requires technicians to work inside a pit which may be several meters deep. Benefits can be tracked after the first inspection and continue for the entire design life of 50 years per unit, this can subsequently be extended further following a simple replacement of the seal around the CTP.
There are also environmental benefits and National Grid have calculated that the new approach will save 12 tonnes of carbon equivalent (CO2e) for each CTP over its 50-year lifespan. This is determined by examining tasks such as excavating soil to expose the pit wall and generator power needed on site for the duration of the works
Two key compressor sites have already undergone large-scale works where National Grid have utilised the new CTPs. In total, eight new CTPs have been pre-fabricated and will be installed during the construction of the pit wall, further reducing installation costs. These units, along with one that was installed as part of the original trial, will start to provide benefits after their first inspections.
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For further information:
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Tel: +44 (0) 1269 842 946 |
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Arden Partners plc (Nominated Adviser & Broker) |
Tel: +44 (0) 20 7614 5900 |
Notes to Editors
Haydale is a global technologies and materials group that facilitates the integration of graphene and other nanomaterials into the next generation of commercial technologies and industrial materials. With expertise in graphene, silicon carbide and other nanomaterials, Haydale is able to deliver improvements in electrical, thermal and mechanical properties, as well as toughness. Haydale has granted patents for its technologies in
For more information please visit: www.haydale.com
Twitter: @haydalegraphene
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