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Projects: Projects for Investigator
Reference Number	NIA_NGGT0087
Title	Selective Catalytic Reduction (SCR) Pre-FEED Environmental and Technical Study
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 (Chemistry) 25%; ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 75%;
UKERC Cross Cutting Characterisation	Not Cross-cutting 75%; Sociological economical and environmental impact of energy (Environmental dimensions) 25%;
Principal Investigator	Project Contact No email address given National Grid Gas Transmission
Award Type	Network Innovation Allowance
Funding Source	Ofgem
Start Date	01 February 2016
End Date	01 February 2017
Duration	12 months
Total Grant Value	£647,500
Industrial Sectors	Information Technologies
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_NGGT0087
Objectives	The objectives of the study would be to: Provide a clearer understanding of the potential technical challenges associated with implementing an SCR project on a National Grid compressor station, and identify initial approaches to overcoming these challenges. Develop an outline conceptual design for a scheme suitable for roll-out on an Avon and / or an RB211 on a National Grid compressor station. Identify the potential National Grid candidate sites / units where a pilot project could be rolled out and associated integration issues identified based on the outline conceptual design. Develop robust BAT models for the comparison of technology options (using the T/SP/ENV/21 process)Issue recommendations on the overall viability of the scheme, enabling a National Grid project board to complete a stage gate review of the scheme and make a recommendation to proceed to the next stage of the study, namely a full FEED / detailed design study. A shortlist of sites / units identified as potentially suitable for FEED. A SCR conceptual design suitable for application on an NTS compressor site. Documentation of the understanding of compliance requirements of SCR systems and principal deviations against National Grid’s engineering and safety standards. A robust BAT model comparing SCR options with ‘do nothing’ and new build DLE scenarios. Documentation of a clear position which either indicates viability of the SCR technology for application on the NTS or a justified rationale concluding that the SCR technology does not bring superior benefits against other options. A sound concept design basis for moving rapidly into a full FEED study (assuming viability is proven)Defined commercial and procurement options for any subsequent pilot project to provide basis for National Grid Global Procurement to be able to seek the best value catalyst solutions (assuming viability is proven).
Abstract	Tightening environmental legislation* means that existing RB211 and Avon gas turbine compressors will be non-compliant without restrictions on running hours or operating life. Recent environmental improvements implemented across the fleet have generally used electric compressors or Dry Low Emission (DLE) gas turbine drivers. Alternative emissions control techniques, e. g catalyst systems have previously been considered and rejected as unproven by GTAM. Stakeholder feedback, OFGEM funding restrictions, the Aylesbury upgrade and experience of other European gas TNOs have required this position to be re-evaluated. Recent re-assessment of Selective Catalytic Reduction (SCR) following the principles of Best Available Techniques (BAT) suggests SCR may be a viable option for retrofitting to control oxides of nitrogen (NOx) emissions, but SCR for gas transmission remains unproven, a small number of pilot schemes are being tested in Europe. SCR has not been considered against National Grid’s engineering and safety standards European regulatory position (BREF) is unclear on SCR for this sector High level discussions with technology providers suggest a number of technical challenges for the successful integration of SCR on the NTS e. g. managing variable exhaust gas temperature. Factors including age, variability, location, environmental sensitivity and network criticality of assets, constrain the number of potential NTS sites for SCR use. * The Industrial Emissions Directive (IED), the BAT Reference (BREF) Associated Emissions Levels (AELs), the EA/SEPA annual emissions network review and forthcoming Medium Combustion Plant Directive (MCP) Initial studies indicate that catalytic reduction technologies are a potential candidate BAT, but that there is a deficit of information relating to technical and integration aspects on the gas NTS and also in determining which sites may be suitable. The methodology for the pre-FEED feasibility technical and environmental study includes the following elements: Carry out a detailed assessment for base case and SCR fitted compressors using the Compressor Machinery Train BAT tool, including data review and collection. Obtain additional baseline information on engine emissions via specialist emissions testing. Determine and assess site-specific and network technical requirements and operational parameters. Analysis of SCR technologies against procurement framework and engineering suite of documents. Engage SCR manufacturer/supplier to develop outline conceptual scheme design. Look for lessons learnt from pilot schemes in Europe. Identify candidate site(s) for pilot project and short list though environmental site sensitivity assessment. Assess commercial and procurement options for any pilot project. Make recommendations on the overall viability of the scheme. The outputs would be a pre-FEED feasibility environmental and technical report which would include discipline based chapters covering the study areas. Specific aspects of the report would include: An updated BAT model with refined modelling assumptions which would set out the environment-technical cost benefits associated with a possible SCR project of this type. A conceptual design report detailing the technical challenges and potential solutions, with generic general arrangement drawings and outline design scheme. Capital and operating cost estimates for a potential BAT solution based on SCR installation. A site suitability screening matrix, identifying candidate sites / with associated benefits and disadvantages. Commercial and procurement pack to support possible establishment of a framework of suppliers. Network Innovation Allowance pack and supporting papers to accompany an application for the project FEED phase, project close out report or board paper concluding why the project is not being progressed further if findings suggest technology applicability is not viable.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	11/12/18