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Welcome to the HyFacts Short Course

Welcome to the HyFacts Short Course. Chapter C: Component testing and certification Electrical Safety and Maintenance Compiled by Christian Machens, TÜV SÜD Akademie. Component testing. Critical components should be tested to validate that they are suitable for use.

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Welcome to the HyFacts Short Course

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  1. Welcome tothe HyFacts Short Course • Chapter C: • Component testing and certification • Electrical Safety and Maintenance • Compiled by Christian Machens, TÜV SÜD Akademie

  2. Component testing • Critical components should be tested to validate that they are suitable for use. • Hydrogen fatigue tests can be carried out for small components. But for large components, this is impractical due to the time and amount of hydrogen required for each cycle, and therefore an alternative strategy needs to be developed: • For a component which will be submitted to less than 10 000 – 15 000 cyclic loadings during its lifetime: a material compatible with hydrogen should be chosen, and then hydraulic fatigue tests are carried out on the component made in such material. • For components which will be submitted to more than 10 000 – 15 000 cyclic loadings during their lifetime, suitability for service needs to be further evaluated aseven hydrogen compatible materials may have reduced fatigue life in hydrogen service. • -> More information also in Chapter “Embrittlement and permeation (E)”

  3. Testing: coveragebystandards • The testing methods described in the standard ISO 11114-4 can be applied • if the system consists of hydrogen cylinders up to 3000 l • ISO 11114-1 Compatibility of metallic materials with gasses • ISO 11114-4 H2 compatibility test methods: Resistance to fatigue in H2 service ISO CD 15399 • ISO 16111:2008 Transportable gas storage devices • Hydrogen absorbed in reversible metal hydrides, Edition 1 • IEC 60079-29-1Edition 1.0 (2007-08-09) Explosive atmospheres • Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases • IEC 62282-3-150 Fuel cell technologies - Part 3-150: Stationary fuel cell power systems • Small stationary fuel cell power system serving as a heating appliance, Edition 1 • IEC/TS 62282-7-2 Fuel cell technologies – Part 7-2: Single cell/stack-performance • test methods for solid oxide fuel cells (SOFC), Edition 1

  4. Testing: coveragebystandards ISO 7866:1999Gas cylinders -- Refillable seamless aluminium alloy gas cylinders Design, construction and testing, Edition 1 ISO 9809-1:2010Gas cylinders – Refillable seamless steel gas cylinders Design, construction and testing Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 Mpa, Edition 2 ISO 9809-2:2010 Gas cylinders - Refillable seamless steel gas cylinders Design, construction and testing Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1100Mpa, Edition 2 ISO 9809-3:2010Gas cylinders - Refillable seamless steel gas cylinders Design, construction and testing Part 3: Normalized steel cylinders, Edition 2 ISO/FDIS 7866 Gas cylinders -- Refillable seamless aluminium alloy gas cylinders Design, construction and testing, Edition 2

  5. Testing: coveragebystandards ISO/DIS 11119-1 Gas cylinders of composite construction Specification and test methods Part 1: Hoop wrapped composite gas cylinders and tubes, Edition 2 ISO/DIS 11119-2 Gas cylinders of composite construction -- Specification and test methods Part 2: Fully wrapped fibre reinforced composite gas cylinders and tubes with load-sharing metal liners, Edition 2 ISO/DIS 11119-3Gas cylinders of composite construction -- Specification and test methods Part 3: Fully wrapped fibre reinforced composite gas cylinders and tubes with non-metallic and non-load-sharing metal liners ISO/NWIP 11119-4 Gas cylinders of composite construction — Specification and test methods Part 4: Fully-wrapped fibre reinforced composite gas cylinders with load-sharing welded metal liners, Edition 1 ISO 11623:2002 Transportable gas cylinders Periodic inspection and testing of composite gas cylinders, Edition 1 ISO/CD 11623 Transportable gas cylinders Periodic inspection and testing of composite gas cylinders, Edition 2

  6. Testing: coveragebystandards • ISO 20421-1:2006/Cor.1:2007Cryogenic vessels -- Large transportable vacuum-insulated vessels • Part 1: Design, fabrication, inspection and testing, Edition 1 • ISO 21009-1:2008 Cryogenic vessels -- Static vacuum-insulated vessels • Part 1: Design, fabrication, inspection and tests, Edition 1 • ISO 21010:2004 Cryogenic vessels -- Gas/materials compatibility, Edition 1 • ISO 21011:2008 Cryogenic vessels -- Valves for cryogenic service, Edition 1 • ISO 21012:2006Cryogenic vessels – Hoses, Edition 1 • ISO 21013-1:2008Cryogenic vessels -- Pressure-relief accessories for cryogenic service • Part 1: Reclosable pressure-relief valves, Edition 1 • ISO 21013-2:2007 Cryogenic vessels -- Pressure-relief accessories for cryogenic service • Part 2: Non-reclosable pressure-relief devices, Edition 1 • ISO 21029-1:2004Cryogenic vessels -- Transportable vacuum insulated vessels of not more • than 1 000 litres volume • Part 1: Design, fabrication, inspection and tests, Edition 1 • ISO 24490:2005 Cryogenic vessels -- Pumps for cryogenic service, Edition 1 • ISO/DIS 21013-4 Cryogenic vessels -- Pilot operated pressure relief devices • Part 4: Pressure-relief accessories for cryogenic service, Edition 1

  7. Testing: coveragebystandards • IEC 600796-10 specifies the requirements for the construction and testing of • oil-immersed electrical equipment, oil-immersed parts of electrical equipment and • Ex components in the type of protection oil immersion "o", intended for use in explosive • gas atmospheres. • Design, fabrication, inspection, examination and testing of • hydrogen transportation pipelines shall be in accordance with national or international • standards, such as ASME B31.3 and B31.8.

  8. Fuel Cell/ElectrolyzerspecificElectricalsafety • Hazardous situations can result from the following causes: • failures or faults in the electrical equipment resulting in the possibility of electric shock or electrical fire • failures or faults in control circuits (or components and devices associated with those circuits) • disturbances or disruptions in power sources as well as failures or faults in the power circuits • loss of continuity of circuits that depend upon sliding or rolling contacts • electrical disturbances e.g. electromagnetic, electrostatic either from outside the electrical equipment or internally generated • release of stored energy resulting in e.g. electric shock that can cause injury • surface temperatures that can cause injury.

  9. Fuel Cell/Electrolyzer specificElectrical safety • Design and installation • Type of wiring and methods of installation • Protective equipment • Electro Magnetic Compatibility (EMC) • Protection against direct contact • Protection against indirect contact • Protection against thermal effects • Protection against overcurrent • Protection against fault currents • Protection against overvoltage • Electrical grounding and potential equalization • Protection by earthing • Protection against lightning • Protection against overvoltages due to lightning and to switching surges • Protection measures to reduce failure of electrical and electronic systems

  10. Grounding of metallic components Figure 110: Example for grounding of metallic components and piping, Source: TRBS 2153

  11. Electrical safety of onboard applications Onboard applications are mobile or transportable units e.g. a vehicle and/or a mobile or transportable equipment, which contains an electrical installation. • Power supply • Protection measures • Protection against electric shock • Protection by automatic disconnection of power supply • Potective-equipotential bonding • TN system • IT system • Electrical separation • Residual Current Devices (RCDs)

  12. Electricalsafety: coveragebystandards • IEC 60364-1:2001 Electrical installations of buildings • Part 1: Fundamental principles, assessment of general characteristics, definitions • IEC 60934:2007 Circuit-breakers for equipment (CBE) • IEC 62305-1:2006 Protection against lightning – Part 1: General principlesIEC 60950-1:2005 Information technology equipment – Safety • Part 1: General requirements • IEC 61000:2005 Electromagnetic compatibility • IEC 60364-4-41:2005 Low-voltage electrical installations • Part 4-41: Protection for safety – Protection against electric shockIEC 60529:2001 Degrees of protection provided by enclosures (IP code)

  13. Electricalsafety: coveragebystandards • IEC 60364-1:2001 Electrical installations of buildings • Part 1: Fundamental principles, assessment of general characteristics, definitions • IEC 60934:2007 Circuit-breakers for equipment (CBE) • IEC 62305-1:2006 Protection against lightning – Part 1: General principlesIEC 60950-1:2005 Information technology equipment – Safety • Part 1: General requirements • IEC 61000:2005 Electromagnetic compatibility • IEC 60364-4-41:2005 Low-voltage electrical installations • Part 4-41: Protection for safety – Protection against electric shockIEC 60529:2001 Degrees of protection provided by enclosures (IP code)IEC 61032:1997 Protection of persons and equipment by enclosures – Probes for verificationThis International Standard specifies details and dimensions of test probes intended to verify • the protection provided by enclosures with regard to: – Protection of persons against access to hazardous parts inside the enclosure; – Protection of the equipment inside the enclosure against ingress of solid foreign objects.

  14. Electricalsafety: coveragebystandards • IEC 60730-1: 2010 Automatic electrical controls for household and similar use –Part 1: General requirements(In general, this International Standard applies to automatic electrical controls for use in, on, • or in association with equipment for household and similar use, including controls for heating, • air-conditioning and similar applications. The equipment may use electricity, gas, oil, solid fuel, • solar thermal energy, etc., or a combination thereof. This International Standard applies to the inherent safety; to the operating values, operating times, and operating sequences where such are associated with equipment safety, and to the testing of automatic electrical control devices used in, or in association with, household or similar equipment.) • IEC 60204-1:2005 Safety of machinery – Electrical equipment of machines • Part 1: General requirementsIEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems • Part 1: Principles, requirements and tests TRBS 2153 Prevention of ignition hazards by electrostatic charge • IEC 60634-7-717: Low-voltageelectricalinstallations • Part 7-717: Requirementsforspecialinstallationsorlocations - Mobile or transportable units • IEC 62282-3-100 Stationary fuel cell power systems – safety Clause 4.7 • IEC 62282-5-1 Stationary fuel cell power systems – safety Clause 4.7

  15. Maintenance safety Maintenance operations Table 37: Maintenance operations

  16. Maintenance safety Maintenance operations

  17. Maintenance safety Maintenance operations

  18. Maintenance safety Maintenance operations

  19. Maintenance safety Maintenance operations

  20. Maintenance safety Maintenance operations

  21. Maintenance: standards IEC 60079-29-2Edition 1.0 (2007-08-16) Explosive atmospheres Part 29-2: Gas detectors Selection, installation, use and maintenance of detectors for flammable gases and oxygen IEC 60079-10-1 Explosive atmospheres Part 10-1: Classification of areas - Explosive gas atmospheres, Edition 2 To prepare and maintain international standards relating to the use of equipment including area classification, the selection and installation, inspection and maintenance, repair, overhaul and reclamation of equipment where there is a hazard due to the possible presence of explosive atmospheres of gases, vapours, mists or combustible dusts. IEC 60079-29-2 Explosive atmospheres Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen, Edition 2 ISO 20421-2:2005Cryogenic vessels -- Large transportable vacuum-insulated vessels Part 2: Operational requirements, Edition 1 ISO 21009-2:2006 Cryogenic vessels -- Static vacuum insulated vessels Part 2: Operational requirements, Edition 1 ISO 21029-2:2004 Cryogenic vessels -- Transportable vacuum insulated vessels of not more than 1 000 litres volume Part 2: Operational requirements, Edition 1

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