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Reference Number NIA2_SGN0029
Title SR25 Calculator update
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 ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
SGN - Southern England
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 September 2022
End Date 31 December 2022
Duration ENA months
Total Grant Value £47,600
Industrial Sectors Energy
Region South East
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , SGN - Southern England (99.999%)
  Other Investigator Project Contact , SGN - Scotland (0.001%)
  Industrial Collaborator Project Contact , SGN (0.000%)
Web Site
Objectives The main features of the package include:Modules: Modules for calculations of hazardous areas for - Buildings, Vents, Multi-Venting, Outdoors.GUI: The Graphical User Interface will remain similar to that of the current tool. However, improvements may be introduced if dictated by ergonomic considerations or more robust implementation of the methodology logic.Data files: The calculator makes extensive use of pre-computed results, which are included as tables in the Excel spreadsheet.Save/Load facilitiesOutput: results are written to pre-existing templates in the spreadsheet, also containing explanatory diagrams.On-line helpEach module of the package will be thoroughly tested and validated against the existing tool for cases where the methodology has not changed or against manual calculations otherwise. The tool will be developed for Microsoft Excel Office 365 (current version used for the Natural Gas SR/25 calculator). No guarantee of compatibility with other versions of Excel can be offered by DNV. It is envisaged that the development of the software will involve the following tasks: Task 1 - Package specification: This task will involve reviewing the IGEM/SR/25 Supplement and liaising with IGEM and/or DNV staff in order to define the details of the updated methodology and the user requirements for the package interface. It is expected that this process will be carried out in parallel with the development work. Task 2 – Software update: The software code for the following modules within the calculator will be checked and compared against the Supplement to confirm where changes are required and these changes will be implemented: Buildings, Vents, Multi-Venting, Outdoors. In line with some sections of the Supplement, it is anticipated that additional code will need to be added to the calculator to deal with situations where there are different fuel types involved such that the calculations are undertaken for all fuel types and the worst case selected. There is also a requirement to add lookup tables for hydrogen and blends which are equivalent to the tables contained within the existing calculator for natural gas. The user interface will also be updated to reflect the requirement for the user to select between natural gas, hydrogen and blends. One calculator will be used to contain the results for each of the three fuel types. The existing system of informative messages on the methodology will be retained and possibly augmented with new information, when appropriate.Task 3 - In-house Testing: All logical pathways through the package will be tested against existing tool (if possible) or manual calculations. Task 4 – Evaluation by IGEM: Once in-house testing has been completed, the prototype version of the tool will be issued to IGEM for evaluation and comment. Task 5 – Finalise Tool and Handover: A final version of the tool will be prepared following receipt of any comments resulting from IGEMs evaluation. The final version will be issued to IGEM for onward distribution to the project sponsors The objective of this project is to update of an existing hazardous area classification calculator to incorporate the methodology in the IGEM/SR/25 Supplement to allow the calculator to be used for hydrogen and blends. 
Abstract The current version of the Technical Standard IGEM/SR/25 Edition 2 covers Hazardous Area Classification of Natural Gas Installations and includes a hazardous area classification calculator. The calculator, based on a Microsoft Excel spreadsheet program, implements the IGEM/SR/25 Edition 2 standard methodology. This project covers the update of the hazardous area classification calculator to incorporate the methodology in the IGEM/SR/25 Supplement to allow the calculator to be used for hydrogen and blends. 
Publications (none)
Final Report (none)
Added to Database 14/10/22