1、 Reference numberISO/PAS 15594:2004(E)ISO 2004PUBLICLY AVAILABLE SPECIFICATION ISO/PAS15594First edition2004-10-01Airport hydrogen fuelling facility operations Exploitation dinstallation aroportuaire davitaillement en hydrogne Copyright International Organization for Standardization Reproduced by IH
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7、ed in Switzerland ii ISO 2004 All rights reservedCopyright International Organization for Standardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/PAS 15594:2004(E) ISO 2004 All rights reserved iiiContents Page Fo
8、reword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols and abbreviated terms 2 5 Fuelling procedures 2 5.1 General requirements . 2 5.2 Bonding and grounding procedures. 2 5.3 Refuelling of a cold system 3 5.4 Defuelling. 3 5.5 Refuelling of a warm system
9、3 5.6 Monitoring of fuelling parameters. 4 5.7 Monitoring of the safety parameters. 4 6 Hydrogen boil-off management. 5 7 Storage of hydrogen . 5 7.1 Storage capacity . 5 7.2 Storage means 5 7.3 Properties of hydrogen stored at the airport . 6 8 Ground support equipment 7 8.1 General requirements .
10、7 8.2 Stationary storage tanks 7 8.3 Portable tank containers 7 8.4 User system for boil-off gas. 7 8.5 LH2pipelines . 8 8.6 Refuelling and boil-off coupling units 8 8.7 Filter on airport side . 9 Annex A (informative) Example of a hydrogen aircraft fuel system layout and aircraft refuel/defuel inte
11、rface point . 10 Annex B (informative) LH2requirements for different types of aircraft 12 Annex C (informative) Hydrogen boil-off in onboard LH2tanks 13 Annex D (informative) Considerations for the selection of storage means . 14 Annex E (informative) Selection of LH2refuelling pressure and temperat
12、ure. 15 Annex F (informative) User systems for boil-off gas 16 Bibliography . 17 Copyright International Organization for Standardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/PAS 15594:2004(E) iv ISO 2004 All
13、rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subjec
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15、 on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committee
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17、ublish other types of normative document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Tech
18、nical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirme
19、d for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the possi
20、bility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/PAS 15594 was prepared by Technical Committee ISO/TC 197, Hydrogen technologies. Copyright International Organization for Standa
21、rdization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/PAS 15594:2004(E) ISO 2004 All rights reserved vIntroduction When this document was introduced in the ISO/TC 197 programme of work, all aircraft- and airport-rele
22、vant procedures, systems and components concerning hydrogen technologies were in an early development state, and the technical solutions that would enable the future use of hydrogen as a fuel for aviation were not fully developed. The development of this document within ISO/TC 197 depended on the pr
23、ogress achieved within the European Aeronautic Defence and Space Company (EADS)-Airbus Cryoplane project. However, this project is no longer planned to start in the near future, and there are no other relevant practical projects underway. ISO/TC 197 experts are convinced that the subject of using li
24、quid hydrogen in commercial aviation is of great importance and will gain new momentum in the next decade. As a result, the latest results are presented in this Publicly Available Specification to make the information available to all interested parties. This document is not to be regarded as an Int
25、ernational Standard. It records the latest results of ISO/TC 197 experts until the subject of using liquid hydrogen in commercial aviation gains interest. It is understood that this document is far from complete and that it represents the knowledge available at the time of publication. Should work o
26、n this subject resume in the next years, the primary objective of the standardization work will be to ensure safety at all phases of handling while taking into account the conditions prevailing at civil airports and the results of risk assessment studies. Copyright International Organization for Sta
27、ndardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright International Organization for Standardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without lic
28、ense from IHS-,-,-PUBLICLY AVAILABLE SPECIFICATION ISO/PAS 15594:2004(E) ISO 2004 All rights reserved 1Airport hydrogen fuelling facility operations 1 Scope This Publicly Available Specification specifies the fuelling procedures, hydrogen boil-off management procedures, storage requirements of hydro
29、gen, and characteristics of the ground support equipment required to operate an airport hydrogen fuelling facility. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe
30、rences, the latest edition of the referenced document (including any amendments) applies. ISO 14687, Hydrogen fuel Product specification ISO 20421-1, Cryogenic vessels Large transportable vacuum insulated vessels Part 1: Design, fabrication, inspection and testing ASME 1998, Boiler and Pressure Vess
31、el Code KSC1)-STD-Z-0009C, Cryogenic Ground Support Equipment, Design of, Standard for KSC-STD-Z-0005B, Pneumatic Ground Support Equipment, Design of, Standard for 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 block fuel quantity of fuel to
32、 be used for refuelling prior to each flight 3.2 refuelling block time time needed to refuel the aircraft, measured between connection and disconnection of the couplings 3.3 inert gas nonflammable and nonreactive gas EXAMPLES Helium, nitrogen, carbon dioxide. 1) Kennedy Space Center. Copyright Inter
33、national Organization for Standardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/PAS 15594:2004(E) 2 ISO 2004 All rights reserved4 Symbols and abbreviated terms AP auxiliary power unit CO carbon monoxide CO2carb
34、on dioxide CnHmhydrocarbon containing n carbon atoms and m hydrogen atoms EADS-Airbus European Aeronautic Defence and Space Company GH2gaseous hydrogen LH2liquid hydrogen N2nitrogen O2oxygen 5 Fuelling procedures 5.1 General requirements At the airport, the following situations shall be considered:
35、normal refuelling during ground turnaround, with an onboard system in cold condition up to the refuelling/boil-off coupling; defuelling of the system on the ground due to planned maintenance activities and applicable troubleshooting cases; refuelling of a warm, air-floated onboard system before putt
36、ing into service and after planned maintenance activities and applicable troubleshooting cases. The airport infrastructure shall provide the ground support equipment required for performing the above-mentioned refuelling and defuelling operations, including the aircraft tank warm-up and precooling,
37、the necessary purification and purging processes, and the evacuation and GH2/LH2recovery that is required for defuelling operations and refuelling of a warm onboard system. Purge, precooling and warm-up procedures for the onboard fuel system shall be required only for putting into service, maintenan
38、ce and troubleshooting activities. The connection point between the aircraft and the ground support equipment shall consist of two couplings (similar but mistake-proof), a refuelling coupling for providing the tanks with LH2, and a boil-off coupling for the discharge of GH2. In Annex A, Figure A.1 p
39、rovides an example of an aircraft refuelling and defuelling interface point and Figure A.2 an example of a hydrogen aircraft-fuel system layout. 5.2 Bonding and grounding procedures Airport personnel shall apply appropriate bonding and grounding procedures prior to performing any refuelling or defue
40、lling operations on an aircraft. Copyright International Organization for Standardization Reproduced by IHS under license with ISO Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/PAS 15594:2004(E) ISO 2004 All rights reserved 35.3 Refuelling of a cold system Fo
41、r normal refuelling during ground turnaround, the airport personnel shall ensure that the tanks are cold and still contain a small quantity of fuel. The time required for the refuelling of a cold system shall be minimized and shall be such that the aircraft-refuel block time requirements can be met
42、(see Annex B). The time required for the refuelling of a cold system shall include an acceptable time for connection and disconnection, including time for cleaning of inner cavities from air at connection and from hydrogen at disconnection, and time for warming before disconnection. In order to perf
43、orm the refuelling of a cold system, airport personnel shall use the following refuelling procedure. a) Establish the connection of the refuelling and boil-off couplings between the aircraft and ground support equipment. Purging and precooling of the refuelling connecting hose and coupling need not
44、be performed. b) After the refuelling system is in “ready” mode, open the tank refuelling and boil-off valves to start the refuelling operation. c) Monitor the fuel level of the tanks and control it using the refuelling and boil-off valves. d) After filling the tanks, close the refuelling and boil-o
45、ff valves and separate the couplings and auxiliary connections. NOTE 1 The renunciation of purge, purification, evacuation and precooling at the coupling can be justified by existing advanced coupling designs. NOTE 2 During the refuelling of a cold system, no boil-off gas is expected due to reconden
46、sation within the onboard tank. 5.4 Defuelling For yearly maintenance checks or any troubleshooting, airport personnel may need to defuel the aircraft tanks. Defuelling of the aircraft fuel system shall be done using the refuelling and boil-off couplings. After coupling the aircraft with the refuell
47、ing and boil-off connectors of the ground support equipment, an overpressure pipe on the gas side within the onboard tank should deplete the tanks back to the airport stationary storage tank or portable tank container. The onboard pumps could assist the depletion. If warming up and purging of the ai
48、rcraft tanks and piping are required, they shall be done using temperature-conditioned inert gases. 5.5 Refuelling of a warm system Refuelling of a warm, air-floated onboard system shall be carried out before putting an aircraft into service and after planned maintenance activities and applicable tr
49、oubleshooting cases. Perform the refuelling of a warm system as follows. a) Purge the tank and piping system with an inert gas (evacuated, if possible) to remove the air or other foreign gases from the system. Decrease the foreign gas concentration within the system to an acceptable level that is yet to be determined, and measure at the boil-off coupling. b) Purge
