TY - CONF A1 - Mair, Georg W. A1 - Becker, Ben A1 - Duffner, Eric A1 - John, Sebastian T1 - Composite storage systems for CGH2- systematic improvement of RC&S N2 - Conventional approval requirements exclusively ask for minimum strength values, which have to be met. The probabilistic approach estimates how likely none of the comparatively manufactured units fails during operation. Both questions are juxtaposed and compared here with respect to the load cycle tests. The influence of the sample sizes is discussed additionally. T2 - 10th INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY & ENVIRONMENTAL PROTECTION CY - Bled, Slovenia DA - 27.06.2017 KW - Probabilistic KW - Hydrogen KW - Composite KW - Cylinder KW - Regulations KW - Load cycles KW - GTR 13 PY - 2017 AN - OPUS4-41677 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Probability of Fatigue of Carbon-Fibre Windings - Tests and Calculation Models Researching Input data for Pressure Vessel Optimization T2 - 7th Cz/Ger Symposium 1999 (Proceedings) CY - Liblice, Czech Republic DA - 1999-04-13 PY - 1999 AN - OPUS4-11588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Hydrogen as Energy carrier – Contributions to safety assessement of storage systems N2 - The introduction reflects the political background in Germany and worldwide concerning hydrogen as energy carrier. This leads to available hydrogen strategies and the reaction of BAM by launching the competence centre H2Safety@BAM. Fokus is set on the competence area TestCert, the special role of the division “Safety of Gas Storage Systems” there and its increasing success in research activities. The main part explains the needs for a risk-controlled market ramp-up concerning hydrogen products and appropriate measures being under development in division 3.5: risk control, tools for consequence estimation and limitation, probabilistic assessment of end of safe life, the efficiency assessment and optimization of current regulations, the structural health monitoring (SHM) with necessary improvement of measures for quality management in the digital world of safety assessment. Last but not least, the wide range of full-scale testing and simulation of worst-case scenarios is explained. T2 - Colloquium zu Antrittsvortrag Leitung Sicherheit von Gasspeichern CY - Online meeting DA - 20.08.2021 KW - H2Safety@BAM KW - Markthochlauf KW - Lebensdauervorhersage KW - statistische Bewertung KW - Risikosteuerung PY - 2021 AN - OPUS4-54617 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Salvage pressure receptacles - Technical background N2 - The presentation reflects the questions that have been raised by member states and NGOs. As background information details on the question how to choose a suitable salvage pressure receptacle (SPR) are provided. This leads to the need for deleting the volume limitation for SPRs and to the discussions in 2014 and 2016 on this issue. As an adequate substitution for deleting the volume limit for SPRs it is proposed to limit the pressure receptacles to be stored in by a maximum pressure-volume-value of 1.5 Mio bar-litres. After some explanations to standardisation projects currently also tackling this pV-limit, some risk-based safety criteria for a limitation are mentioned with the focus of the consequence level and the general avoidance of catastrophic worst case scenarios. T2 - 57th session of TDG Sub-Committee CY - Online meeting DA - 30.11.2020 KW - Salvage pressure receptacle KW - Consequence KW - Catastrophe KW - Compressed gas PY - 2020 AN - OPUS4-53161 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Minimum Burst Requirements for CGH2-Pressure Receptacles N2 - The presentation is divided in two parts, each evaluates a different aspect of safety. It starts with the analysis of consequences resulting from worst case ruptures of gas cylinders. The number of harmed persons and fatalities dependent from the pressure-volume product and the kind of stored gas. In parallel, there is a national accepted rule for accepted failure rates depending from this pV-product created by BAM. When combining both aspects it become clear that the pressure-volume product can be used as a good indicator for consequences. At a level of about 120 MPa m3 the maximum consequence starts to become catastrophic character. This shows the reason why the representatives of DIN insisted in limiting relevant pV-limits for tubes and cylinders to 1 Mio. bar litres. The second part gives a raff overview on the parameters influencing the acceptance rates of borderline basic populations. This is added by some slides giving an idea for the improvement of the minimum burst requirement and finally completed by a proposal for improved acceptance criteria for the burst test. The basic idea is: an increased pV-product of tubes has the be reflected by an increased safety level. T2 - CEN TC23/WG16 CY - Paris, France DA - 21.06.2018 KW - Burst ratio KW - Acceptance rate KW - Risk KW - F-N-curve KW - PV-product KW - Catastrophe PY - 2018 AN - OPUS4-45490 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Open Issues of insuring Safety of CPVs by Strength testing N2 - Der Vortrag erläutert den Sicherheitsbegriff im erweiterten Sinne und führt zur Notwendigkeit eines eher risikobasierten Verständnisses der Sicherheit. Darauf aufbauend wird mithilfe der Monte-Carlo-Simulation gezeigt, wo die Schwachstellen der ECE R 134 liegen und in welche Richtung die GTR 13 in der Phase 2 optimiert werden könnte. Hierzu ist es hilfreich, die Monte-Carlo Simulation als Werkzeug weiter zu entwickeln, wozu die BAM das Vh-Konzept MoCaSiB vorstellt. N2 - The presentation explains the term “safety” in a broader sense and leads to the need for a more risk-based understanding of safety. Based on this, the Monte Carlo simulation is used to show where the weak points of the ECE R 134 are and in which direction the GTR 13 could be optimized during the currently running phase 2. For this purpose, it is helpful to improve the currently operated tool for Monte Carlo simulation, for which BAM introduced the research idea “MoCaSiB”. T2 - Sitzung 18-01 des FKT- Sonderausschusses „Sicherheit von Gas- und Wasserstoffahrzeugen“ (FKT-SA SGWF) CY - TÜV Rheinland, Köln, Germany DA - 24.05.2018 KW - Probability of failure KW - Acceptance rate KW - Survival rate KW - Basic populaiton KW - Burst ratio PY - 2018 AN - OPUS4-45469 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Safety Assessment of RCS by BAM N2 - The presentation explains the intended way of BAM in tackling the safety issues in the project TAHYA. The way how the term “safety” is used in TAHYA leads to the need for a more risk-based understanding of safety. Based on this, the Monte Carlo simulation is used to show where the weak points of current regulations are. Thus, a concept for optimization of relevant regulations, codes and standards will be elaborated during the project. For this purpose, it is helpful to improve the currently operated tool for Monte Carlo simulation, which will need additional data for monitoring the outcome. Strength data, that will be determined by BAM and the other partners during the already agreed test program can be used for this purpose without additional effort. T2 - Consortial Meeting TAHYA CY - Regus at Diegem, Brussels DA - 31.05.2018 KW - Risk KW - Acceptance rate KW - Survival rate KW - Composite KW - Hydrogen Storage PY - 2018 AN - OPUS4-45479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barthélémy, H. A1 - Agnoletti, A. A1 - Bortot, P. A1 - Mair, Georg W. A1 - Zheng, J. T1 - Storage N2 - The whole conference focused on gaps in research concerning hydrogen and hydrogen safety. This presentation focus on storage aspects and shows the current gaps in research from the point of view of the authors. They have differences in background, from university via manufacturer and safety institute to hydrogen operating industry. The different purposes of storage are covered (onboard storage, stationary storage and transport of gases) as well as the different designs (steel to pure composite/plastic). T2 - "Research Priorities Workshop RPW 2018" (EC & US DOE) CY - Buxton, UK DA - 18.09.2018 KW - Strength degradation KW - Initial testing KW - Knowledge gaps PY - 2018 AN - OPUS4-46159 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Current work at BAM on composite-cylinders in fire N2 - The presentation gives information about several activities of BAM on the issue of fire engulfment tests of onboard gas storage systems. T2 - Advisory Board of the SUPERGEN Challenge project "Integrated safty strategies for onboard H2-storage" CY - Hangzhou, China DA - 19.04.2016 KW - Fire engulfment tests KW - Competence of BAM KW - Car crash KW - Gas explosion PY - 2016 AN - OPUS4-35958 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Probabilistic approval approach - Safety and economic aspects of minimum burst and load cycle requirements N2 - This presentation provides the main issue of a probabilistic based safety assessment. It shows the differences in terms of survival rate between some current deterministic standards and the probabilistic approach. It deals with three test procedures: slow burst test, cycle test and fire engulfment test. T2 - INTERNATIONAL CONFERENCE HYDROGEN BRIDGE 2016 - Safety of high-pressure hydrogen storage CY - Hangzhou, China DA - 21st APRIL 2016 KW - Slow burst test KW - Cycle strength KW - End of life KW - Degradation KW - Lucky punch area PY - 2016 AN - OPUS4-35960 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Probabilistic safety assessment of composite gas cylinders - Safety and economic aspects of minimum burst and load cycle requirements N2 - This presentation shows the most important steps for developing the probabilistic approach PA with a lot of detailed information on test results. It discusses the necessitiy of performing a slow burst test, to which amount degradation can be accepted and how these interacts with aspects of costs etc. T2 - SAE - Fuel Cell Safety Task Force CY - Torrance, CA, USA DA - 8th March 2016 KW - Saving effort KW - Sample performance chart KW - Degradation KW - Lucky punch arey KW - Confidence level KW - Survival rate PY - 2016 AN - OPUS4-35961 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Probabilistic safety analysis of CPVs – Comparison PA vs. ISO 11119 and GTR13 N2 - The presentation shows the basics on the graphic comparison of deterministic regulations and probabilistic safety requirements. In doing so, unsafe but approvable areas in the BAM-SPC (sample performance chart) becomes obvious; as the area of not approveable but safe strength properties does. Finally the semi-porbabilistic approach of GTR#13 (global technical regulation for hydrogen vehicles) is analysed. Relevant figures show again potential of saving material and unsafe areas in case of high scatter at end of life. T2 - PHASE convention 2016; dissimination event of the COPERNIC project (COst and PERformaNce Improvement for Cgh2 composite tanks; EU FP7) CY - De Hoorn in Leuven, Belgium DA - 24.05.2016 KW - Composite cylinders KW - Reliability KW - Deterministic KW - Degradation KW - End of life PY - 2016 AN - OPUS4-36255 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Advantages of Reliablility Analyses of Hydrogen Storage Receptacles or Three Good Arguments for Probabilistic Dimensioning of "StorHy"-Systems T2 - Kick-off Meeting StorHY "SAR" CY - Berlin, Germany DA - 2004-06-24 PY - 2004 AN - OPUS4-5100 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - The Low-Cycle Fatigue of Fibre-Metal-Hybrid Structures T2 - Fourth Internal Conference on Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials (LCF 4) CY - Garmisch-Partenkirchen, Germany DA - 1998-09-10 PY - 1998 AN - OPUS4-5996 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - The Fail-Safe Properties of Hoop Wrapped Pressure Vessels T2 - General Assembly of the European pressure Equipment Research Council (EPERC) CY - Berlin, Germany DA - 1999-11-30 PY - 1999 AN - OPUS4-5997 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Highlights of SP SAR within StorHy related to RC & S T2 - Workshop on Regulations, Codes and Standards for H2/FC Technologies, European Commission, HFP Secr. at CDMA CY - Brussels, Belgium DA - 2005-10-26 PY - 2005 AN - OPUS4-11272 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - HYDROGEN ONBOARD STORAGE - AN INSERTION OF THE PROBABILISTIC APPROACH INTO STANDARDS & REGULATIONS? T2 - Plenary Presentation at the "International Conference on Hydrogen Safety ICHS" CY - Pisa, Italy DA - 2005-09-09 PY - 2005 AN - OPUS4-11271 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Implementation and current situation of introducing the Directives 97/23/EC in the German legislaton T2 - Seminar on the Technical Regulation on the Pressure Vessels" des Romanian Ministry of Industry and Ressources CY - Bucharest, Romania DA - 2001-09-30 PY - 2001 AN - OPUS4-6011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - STORHY - "Hydrogen Storage Systems for Automotive Application" Integrated Project n 502667 T2 - H2/FC Technology Platform Operation Review Days CY - Brussels, Belgium DA - 2005-12-08 PY - 2005 AN - OPUS4-11548 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. A1 - Becker, Ben T1 - Practical applications of CPVs - ESR 11: Accumulation of fibre breaks under time-dependent loads in CFRP materials of composite cylinders N2 - Das Anwendungsspektrum von CPV (composite pressure vessels) ist vielschichtig. Aber auch die Versagensformen und das Spektrum der Messmethoden ist vielfältig. Anhand verschiedener, in der BAM festgestellter Effekte wird gezeigt, warum die micromechnanische Betrachtung des Composties von so großem Interesse für die Vorhersage der Alterung von CPVn ist. N2 - The application range of CPV (composite pressure vessels) is multifaceted. But also the failure forms and the spectrum of measurement methods is manifold. On various, at BAM observed effects, it is shown why the micromechanical analysis of the composites is of such great interest for the prediction of aging effects of CPVs. T2 - Kick-Off Meeting FiBreMoD CY - KU Leuven, Belgium DA - 27.03.2017 KW - Composite KW - Degradation KW - Pressure increase rate KW - Slow burst test PY - 2017 AN - OPUS4-41711 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -