The aim of this project is to complete a Gap Analysis for full industry qualification requirements, complete independently certified testing, develop bends, crossings, and repair techniques. The gap analysis and detailed research into current IGEM/API industry standards will be used to define independent testing to qualify the system beyond what has already been completed. It has also been identified that key features are required to integrate the system more easily into current operating requirements. This will include numerical modelling of the additional concept designs and methodology that will need to be developed. Further work to realise the ongoing maintenance requirements and suitable integration to current regulatory and gas operator policies will be determined. This will subsequently specify the design requirements for a large-scale trial.
Benefits
MASiP (Mobile Automated Spiral Intelligent Pipe) is an integrated approach to digital integrity monitoring, automated mobile pipe manufacture and flexible pipe structure. Its structure, using HDPE as an internal liner with steel reinforcement, offers the possibility for pipeline operation to higher pressures compared to traditional unreinforced HDPE. This modification makes it ideal for hydrogen transportation as it mitigates to the issues around hydrogen embrittlement of comparative steel pipelines. In addition, the use of digital fibre technology which forms part of the pipeline structure, provides real time 24/7 monitoring of the pipeline for integrity purposes.
As the SGN explores opportunities to build a green future and start working with hydrogen in blends up to 100%, this technology is perfectly poised to provide the monitoring needed to ensure the safe operation of the network.
The project will provide unique and referenceable information for Network licensees and Industry on a potential new transmission pipeline materials option with 100% hydrogen. The learning gained from the project can be applied to Network Licensees and their network operations to facilitate safe transition to hydrogen from natural gas.
Learnings
Outcomes
SPS have now produced a qualification test plan for the MASIP tool to progress its repair and maintenance methods as well as its technology for bends and crossings to a TRL 7. It clearly sets out the approach on how to undertake the product qualification in accordance to industry standards. The majority of IGEM guidelines cover the design, installation and operation of the pipelines, but do not outline the type of testing required for qualification of pipelines. As such, the primary qualification test standard, was based on API 15S, supplemented by IGEM requirements as required.
To ensure successful industry acceptance, the team requested information SGN's Pre-Feed, Caledonia Project and appropriate technical details to define the requirements for the concept design. This included approximate operating pressures and diameters, crossing restrictions, bend radius' and quantities. Specific details of the proposed route were not given. This also allowed the SPS team to widen the gap analysis to include these features and help define a design a test plan to move forward.
MASiP technology is unique in nature and whilst the pipe product itself can be qualified to industry codes and standards. There are elements of installation technology, such as crossings and bends which are new. The demands and risks are therefore [HJ3] addressed separately and assessed against the Technology Readiness Level (TRL) levels to determine their functionality. The roadmap to develop these aspects further includes computer modelling and SPS have understood the necessity for a robust repair method and an integration strategy to P11.
The pipeline demonstrator concept has been designed with the aim to provide confidence in hydrogen pipeline technology and to showcase pipeline technology as a “mini-grid”. The key features are incorporated that both SPS and SGN consider useful for both installation and operational aspects to prove that the technology is fit for purpose as a system with a range of different pipe diameters and features- including hydrogen generation, flow, transport and storage.
Lessons Learnt
One of the key lessons learnt from the completion of this project was a deeper understanding of the complicated steps required for the Lloyds Register Technology Assessment process, as well as comprehending the thought process that guides it.
Significant technical guidance and input from the project team was required to ensure that suitable gas industry acceptance and integration will be achieved. It was apparent that development had accelerated significantly in certain areas, with gaps developing as part of the wider system through previous development.
