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IEA TCP TASK 43 – Recommendations for Safety Distances Methodology for Alkaline and PEM Electrolyzers Cover

References

  1. Al-Douri, A., Wismer, S.E., Jimenez, A. and Groth, K.M. (October 2025) ‘Quantitative Risk Assessment of a Lab-Scale Hydrogen Electrolyzer System’, IJHE, 97, 105680. DOI: 10.1016/j.jlp.2025.105680
  2. API. (2020) API Standard 521 Pressure-relieving and Depressuring Systems [online]. Available from: https://www.api.org/~/media/files/publications/whats%20new/521%20e6%20pa.pdf
  3. ASME. (2008) ‘ASME B31.12-2008’, Hydrogen Piping and Pipelines [online]. Available from: https://webstore.ansi.org/standards/asme/asmeb31122008
  4. ASME. (2023) Boiler and Pressure Vessel Code (BPVC) [online]. Available from: https://www.asme.org/codes-standards/bpvc-standards/bpvc-2023
  5. ASTM. (2019). ASTM G93/G93M-19 – Standard Guide for Cleanliness Levels and Cleaning Methods for Materials and Equipment Used in Oxygen-Enriched Environments [online]. Available from: https://www.astm.org/g0093_g0093m-19.html
  6. Azkarate, I., Jordan, T. and Moretto, P. (2020) Minutes of the FCH 2 JU Workshop on Safety of Electrolysis on 18 November 2020, EHSP [online]. Available from: https://www.clean-hydrogen.europa.eu/document/download/ca7e6a58-ccae-4222-b679-6b51941ef750_en
  7. BCGA. (2020) Guidance Note 41 – Separation distances in the gases industry [online]. Available from: https://bcga.co.uk/bcga-guidance-note-41-separation-distances-in-the-gases-industry/
  8. Büthker, E., Elliott, A. and te Ronde, I. (2015) Internal Safety Distances for PGS 35 [online]. Available from: https://publicatiereeksgevaarlijkestoffen.nl/documents/81474/1664358056-pgs_35_wg_2015_032_pgs35_definitief-20achtergronddocument.pdf
  9. CGA. (2016) P-8.7, Safe Location of Oxygen and Inert Gas Vents [online]. Available from: https://portal.cganet.com/publicationlist/
  10. CGA. (2018) G-4.1, Cleaning of Equipment for Oxygen Service [online]. Available from: https://portal.cganet.com/publicationlist/
  11. CGA. (2019) G-5.4 Standard for Hydrogen Piping Systems at Consumer Sites [online]. Available from: https://portal.cganet.com/publicationlist/
  12. CGA. (2021) G-5.5 Standard for Hydrogen Vent Systems [online]. Available from: https://portal.cganet.com/publicationlist/
  13. Choi, J.O., Cho, W.C. and Kang, S.K. (2020) ‘Safety Issues of Electrolysis Systems in coupled Operation with Renewable Energy Sources’, HySafe RPW, Safety of Electrolysis, October 28.
  14. Coudoro, K., Bernard, L. and Jallais, S. (2023) ‘Calculating The Fundamental Parameters To Assess The Explosion Risk Due To Crossover In Electrolysers’, ICHS 2023 [online]. Available from: https://hysafe.info/ichs2023/ichs-2023-presentations/
  15. EHSP. (2023) Guidance on Hydrogen Safety Engineering – Guidance Document [online]. Available from: https://www.clean-hydrogen.europa.eu/system/files/2023-05/EHSP%20Guidance%20on%20Hydrogen%20Safety%20Engineering%20-%20v1-Final.pdf
  16. EIGA. (2016) Doc 154/16, Safe Location of Oxygen and Inert Gas Vents [online]. Available from: www.eiga.eu/uploads/documents/DOC154.pdf
  17. EIGA. (2020) Doc 13/20 Revision of Doc 13/12, Oxygen pipeline and piping systems [online]. Available from: https://www.eiga.eu/uploads/documents/DOC013.pdf
  18. EIGA. (2021) DOC 75/21 – Methodology for determination of safety and separation distances [online]. Available from: https://www.eiga.eu/ct_documents/doc075-pdf/
  19. EIGA. (2024) Doc 211/24, Hydrogen Vent Systems for Customer Applications [online]. Available from: https://www.eiga.eu/uploads/documents/DOC211%20(4).pdf
  20. Groth, KM., Al-Douri, A., Wismer, S.E., Jimenez, A., Grabovetska, V., Schaad, C. and Mosleh, S. (2024) ‘Investigation of Quantitative Risk Assessment (QRA) Techniques for Novel Hydrogen Systems Part I: Electrolyzers’, EPRI, Palo Alto, CA [online]. Available from: https://www.epri.com/research/products/000000003002031854
  21. H2TOOLS. (2025) The Lessons Learned Database [online]. Available from: https://h2tools.org/
  22. HSE. (1976) The explosion at Laporte Industries Ltd Ilford, 5 April 1975, ISBN 011880333 6, [online]. Available from: https://www.icheme.org/media/13690/the-explosion-at-laporte-industries-ilford.pdf
  23. ICPE 4715/1416. (2024) [online]. Available from: https://aida.ineris.fr/reglementation/decret-ndeg-2024-667-020724-modifiant-nomenclature-installations-classees-protection
  24. IEA TCP H2. (2022) Task 43 Safety and RCS of Large Scale Hydrogen Energy Applications [online]. Available from: https://www.ieahydrogen.org/task/task-43-safety-and-rcs-of-large-scale-hydrogen-energy-applications/
  25. IEC. (2020). IEC 60079-10-1:2020 – Explosive atmospheres – Part 10-1: Classification of areas – Explosive gas atmospheres [online]. Available from: https://webstore.iec.ch/en/publication/63327
  26. IEC. (2024) Series IEC 61511:2024 SER Functional safety – Safety instrumented systems for the process industry sector – ALL PARTS [online]. Available from: https://webstore.iec.ch/en/publication/5527
  27. INERIS. (2023) SIT01 – Opération Hydrogène, Note technique accompagnant la révision de l’Arrêté Ministériel de Prescriptions Générales relatif à la rubrique 1416, report – 214026 – 2771290 – v1.0.
  28. ISO. (2019) ISO 22734:2019 – Hydrogen generators using water electrolysis — Industrial, commercial, and residential applications [online]. Available from: https://www.iso.org/standard/69212.html
  29. ISO. (2020b) ISO 16573-1:2020 Steel — Measurement method for the evaluation of hydrogen embrittlement resistance of high strength steels, Part 1: Constant load test [online]. Available from: https://www.iso.org/standard/73153.html
  30. ISO. (2020c) ISO 19880-1:2020 Gaseous hydrogen — Fuelling stations Part 1: General requirements [online]. Available from: https://www.iso.org/standard/71940.html
  31. ISO. (2022) ISO 16573-2:2022 Steel — Measurement method for the evaluation of hydrogen embrittlement resistance of high-strength steels, Part 2: Slow strain rate test [online]. Available from: https://www.iso.org/standard/74320.html
  32. ISO. (2025) ISO 22734-1:2025 – Hydrogen generators using water electrolysis – Part 1: Safety [online]. Available from: https://www.iso.org/standard/82766.html
  33. ISPT. (2023) ‘Hydrohub Innovation Program’, Safety Aspects of Green Hydrogen Production on Industrial Scale [online]. Available from: https://ispt.eu/publications/safety-aspects-of-green-hydrogen-production-on-industrial-scale/ or https://www.h2-mobile.fr/uploads/doc_20231114192000.pdf
  34. Kim, S.I. and Kim, Y. (2019) ‘Review: Hydrogen Tank Explosion in Gangneung, South Korea’, 2019 Center for Hydrogen Safety Conference, October 14–15, 2019 USA [online]. Available from: https://proceedings.aiche.org/chs/conferences/international-center-hydrogen-safety-conference/2019/proceeding/paper/review-hydrogen-tank-explosion-gangneung-south-korea
  35. MSB. (2020) MSBFS 2020:1 föreskrifter om hantering av brandfarlig gas och brandfarliga aerosoler [online]. Available from: https://www.msb.se/sv/regler/gallande-regler/brandfarliga-och-explosiva-varor/msbfs-202012/
  36. NFPA 2. (2023) Hydrogen Technologies Code [online]. Available from: https://www.nfpa.org/product/nfpa-2-code/p0002code
  37. NFPA 69. (2024) Standard on Explosion Prevention Systems [online]. Available from: https://www.nfpa.org/codes-and-standards/nfpa-69-standard-development/69
  38. NFPA 70. (2023) National Electrical Code [online]. Available from: https://www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70
  39. NFPA 496. (2024) Standard for Purged and Pressurized Enclosures for Electrical Equipment [online]. Available from: https://www.nfpa.org/codes-and-standards/nfpa-496-standard-development/496
  40. Pennel, A. (1963) ‘Hazards in the electrolysis of brine in mercury cells’, 2nd Symposium in Chemical Process Hazard with Special Reference to Plant Design. Manchester, 2–4 April [online]. Available from: https://www.icheme.org/media/10627/ii-paper-06.pdf or the lessons learnt of the EuroChlor community [online]. Available from: https://www.eurochlor.org/technical-safety/safety-incident-sharing/
  41. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2006) Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC [online]. Available from https://eur-lex.europa.eu/eli/dir/2006/42/oj
  42. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2012) Directive 2012/18/EU of the European Parliament and of the Council of 4 July 2012 on the control of major-accident hazards involving dangerous substances, amending and subsequently repealing Council Directive 96/82/EC [online]. Available from: https://eur-lex.europa.eu/eli/dir/2012/18/oj
  43. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2014) Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility [online]. Available from: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32014L0030
  44. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2014) Directive 2014/34/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres [online]. Available from: https://eur-lex.europa.eu/eli/dir/2014/34/oj
  45. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2014) Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits [online]. Available from: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32014L0035
  46. THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION. (2014) Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment [online]. Available from: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014L0068
  47. Vyazmina, E., de Reals, G., Chang, R., Phillips, L., Quesnel, S., Truchot, B., Hocquet, J., Torrado Beltran, D., Runefors, M. and Ehrhart, B.D. (2023) ‘IEA TCP Task 43- subtask Safety Distances: state on the art’, ICHS 2023, Sep 2023, Québec (CA), Canada. pp. 749757 [online]. Available from: https://ineris.hal.science/ineris-04336346v1.
  48. Wismer, S.E., Jimenez, A., Al-Douri, A., Grabovetska, V. and Groth, K.M. (2024) ‘PEM electrolyzer failure scenarios identified by failure modes and effects analysis (FMEA)’, International Journal of Hydrogen Energy, 89 (Nov. 4, 2024), pp. 12801289. ISSN: 0360-3199. DOI: 10.1016/j.ijhydene.2024.09.397
Language: English
Page range: 47 - 67
Submitted on: Jan 18, 2025
Accepted on: Jul 28, 2025
Published on: Sep 18, 2025
In partnership with: Paradigm Publishing Services

© 2025 Elena Vyazmina, Richard Chang, Benjamin Truchot, Katrina Groth, Samantha Wismer, Sebastien Quesnel, David Torrado Beltran, Nick Hart, Thomas Jordan, Karen Ramsey-Idem, Deborah Houssin, Simon Jallais, Christophe Bernard, Lucie Bouchet, Ricardo Ariel Perez, Lee Phillips, Marcus Runefors, Jerome Hocquet, Andrei Tchouvelev, published by KIT Scientific Publishing
This work is licensed under the Creative Commons Attribution 4.0 License.