Safety studies of a hydrogen refuelling station: Determination of the occurrence frequency of the accidental scenarios

Casamirra, Maddalena; Castiglia, Francesco; Giardina, Mariarosa; Lombardo, C.

doi:10.1016/j.ijhydene.2009.01.096

Cited by 70 publications

(13 citation statements)

References 1 publication

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“…Kishita et al investigated the resilient design of energy systems with the help of the FTA. Through reliability analysis, the frequency of different accident scenarios of pressurized H 2 storages, the safety of hydrogen filling stations, and the reliability of hybrid renewable energies were analyzed . FMEA and FTA are used in the field of FCs mainly to determine the degradation in voltage per hour .…”

Section: Reliability and Resiliencementioning

confidence: 99%

Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Uhrig

Kadar

Müller

2020

Energy Science & Engineering

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Liquid organic hydrogen carriers (LOHC) are a technology that allows storing hydrogen in a safe and dense manner by reversible chemical conversion. They constitute a very promising option for energy storage, transport, and release combined with electric power generation by fuel cells in large‐scale applications like trains. In order to establish trains running on LOHC, it is mandatory to ensure the reliability of the system. This study evaluates various system configurations concerning reliability and resilience. The fault tree analysis method has been used to quantify the probability of failure. The S‐P matrix was applied to assess the different failure modes in context of severity as well as their probability. The MTTF of the system can be more than doubled by introducing single redundancy for the fuel cell and the reactor, while more than two redundant components diminish the positive effect on reliability due to higher complexity. It is estimated that the systems full functionality is available for more than 97% of its operating time.

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Section: Reliability and Resiliencementioning

confidence: 99%

Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Uhrig

Kadar

Müller

2020

Energy Science & Engineering

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“…There are many examples of blending HAZOP and FTA in the literature: Demichela et al [ 32 ] developed the Recursive Operability Analysis (ROA), linking HAZOP results and FTA development; Cozzani et al [ 33 ] developed a specific methodological approach to analyse the risk from hazardous materials in marshalling yards; Casamirra et al [ 34 ] integrated HAZOP, FTA and Failure Mode and Effect Analysis (FMEA) to assess the safety of a hydrogen refuelling station; and Kim et al [ 35 ] combined HAZOP and FTA to carry out safety assessment of hydrogen fuelling stations at Korea.…”

Section: Methodsmentioning

confidence: 99%

Risk Analysis of a Fuel Storage Terminal Using HAZOP and FTA

Bargues

González-Cruz

González-Gaya

et al. 2017

IJERPH

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The size and complexity of industrial chemical plants, together with the nature of the products handled, means that an analysis and control of the risks involved is required. This paper presents a methodology for risk analysis in chemical and allied industries that is based on a combination of HAZard and OPerability analysis (HAZOP) and a quantitative analysis of the most relevant risks through the development of fault trees, fault tree analysis (FTA). Results from FTA allow prioritizing the preventive and corrective measures to minimize the probability of failure. An analysis of a case study is performed; it consists in the terminal for unloading chemical and petroleum products, and the fuel storage facilities of two companies, in the port of Valencia (Spain). HAZOP analysis shows that loading and unloading areas are the most sensitive areas of the plant and where the most significant danger is a fuel spill. FTA analysis indicates that the most likely event is a fuel spill in tank truck loading area. A sensitivity analysis from the FTA results show the importance of the human factor in all sequences of the possible accidents, so it should be mandatory to improve the training of the staff of the plants.

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“…As well, there is known that the storage of hydrogen is an important aspect of refuelling station design and construction. In fact, the storage system accomplishes two major roles in hydrogen delivery: increase of storage working capacity and regulation of delivery flow rate [26]. The main safety aspects at the user interface are related to the risk associated with a potential ignition of a hydrogen leakage at the station or at the vehicle.…”

Section: Risks In Hydrogen Refuelling Stationsmentioning

confidence: 99%

Numerical modelling of hydrogen release and dispersion

Pasculescu¹,

Şuvar²,

Tuhut³

et al. 2021

MATEC Web Conf.

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Hydrogen is the most abundant element on earth, being a low polluting and high efficiency fuel that can be used for various applications, such as power generation, heating or transportation. As a reaction to climate change, authorities are working for determining the most promising applications for hydrogen, one of the best examples of crossborder initiative being the IPCEI (Important Project of Common European Interest) on Hydrogen, under development at EU level. Given the large interest for future uses of hydrogen, special safety measures have to be implemented for avoiding potential accidents. If hydrogen is stored and used under pressure, accidental leaks from pressure vessels may result in fires or explosions. Worldwide, researchers are investigating possible accidents generated by hydrogen leaks. Special attention is granted to the atmospheric dispersion after the release, so that to avoid fires or explosions. The use of consequence modelling software within safety and risk studies has shown its’ utility worldwide. In this paper, there are modelled the consequences of the accidental release and atmospheric dispersion of hydrogen from a pressure tank, using state-of-the-art QRA software. The simulation methodology used in this paper uses the “leak” model for carrying out discharge calculations. This model calculates the release rate and state of the gas after its expansion to atmospheric pressure. Accidental release of hydrogen is modelled by taking into account the process and meteorological conditions and the properties of the release point. Simulation results can be used further for land use planning, or may be used for establishing proper protection measures for surrounding facilities. In this work, we analysed two possible accident scenarios which may occur at an imaginary hydrogen refuelling station, accidents caused by the leaks of the pressure vessel, with diameters of 10 and 20 mm, for a pressure tank filled with hydrogen at 35 MPa / 70 MPa. Process Hazard Analysis Software Tool 8.4 has been used for assessing the effects of the scenarios and for evaluating the hazardous extent around the analysed installation. Accident simulation results have shown that the leak size has an important effect on the flammable/explosive ranges. Also, the jet fire’s influence distance is strongly influenced by the pressure and actual size of the accidental release.

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Safety studies of a hydrogen refuelling station: Determination of the occurrence frequency of the accidental scenarios

Cited by 70 publications

References 1 publication

Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Risk Analysis of a Fuel Storage Terminal Using HAZOP and FTA

Numerical modelling of hydrogen release and dispersion

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