Gaseous hydrogen -- Fuelling stations

This document defines the minimum design, installation, commissioning, operation, inspection and maintenance requirements, for the safety, and, where appropriate, for the performance of public and non-public fuelling stations that dispense gaseous hydrogen to light duty road vehicles (e.g. fuel cell electric vehicles). This document is not applicable to the dispensing of cryogenic hydrogen, or hydrogen to metal hydride applications. Since this document is intended to provide minimum requirements for fuelling stations, manufacturers can take additional safety precautions as determined by a risk management methodology to address potential safety risks of specific designs and applications. While this document is targeted for the fuelling of light duty hydrogen road vehicles, requirements and guidance for fuelling medium and heavy duty road vehicles (e.g. buses, trucks) are also covered. Many of the generic requirements within this document are applicable to fuelling stations for other hydrogen applications, including but not limited to the following: — fuelling stations for motorcycles, fork-lift trucks, trams, trains, fluvial and marine applications; — fuelling stations with indoor dispensing; — residential applications to fuel land vehicles; — mobile fuelling stations; and — non-public demonstration fuelling stations. However, further specific requirements that can be necessary for the safe operation of such fuelling stations are not addressed in this document. This document provides requirements for and guidance on the following elements of a fuelling station (see Figure 1 and Figure 2): — hydrogen production/delivery system: — delivery of hydrogen by pipeline, trucked in gaseous and/or liquid hydrogen, or metal hydride storage trailers; — on-site hydrogen generators using water electrolysis process or hydrogen generators using fuel processing technologies; — liquid hydrogen storage; — hydrogen purification systems, as applicable; — compression: — gaseous hydrogen compression; — pumps and vaporizers; — gaseous hydrogen buffer storage; — pre-cooling device; — gaseous hydrogen dispensing systems.

Carburant d'hydrogène gazeux -- Stations-service

General Information

Status
Published
Publication Date
03-Mar-2020
Current Stage
6060 - International Standard published
Start Date
05-Feb-2020
Completion Date
04-Mar-2020
Ref Project

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ISO 19880-1:2020 - Gaseous hydrogen -- Fuelling stations
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INTERNATIONAL ISO
STANDARD 19880-1
First edition
2020-03
Gaseous hydrogen — Fuelling
stations —
Part 1:
General requirements
Carburant d'hydrogène gazeux — Stations-service —
Partie 1: Exigences générales
Reference number
ISO 19880-1:2020(E)
ISO 2020
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ISO 19880-1:2020(E)
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© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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Published in Switzerland
ii © ISO 2020 – All rights reserved
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ISO 19880-1:2020(E)
Contents Page

Foreword ......................................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 3

3 Terms and definitions ..................................................................................................................................................................................... 3

4 Abbreviated terms ...........................................................................................................................................................................................15

5 Risk management .............................................................................................................................................................................................16

5.1 Hydrogen fuelling station safety recommendations ...........................................................................................16

5.2 Risk assessment ..................................................................................................................................................................................17

5.3 Mitigation measures to improve system safety .......................................................................................................17

5.3.1 General...................................................................................................................................................................................17

5.3.2 Mitigations which reduce the potential for the formation of a flammable

mixture ..................................................................................................................................................................................17

5.3.3 Mitigation for the formation of a flammable mixture in enclosures ................................18

5.3.4 Mitigation for the formation of a flammable mixture under a canopy ...........................18

5.3.5 Mitigations which reduce the potential for ignition .......................................................................19

5.3.6 Mitigation of the escalation and/or impact of a fire or explosion

originating from the fuelling installation ................................................................................................20

5.3.7 Mitigation of the effect of an external fire/events on the fuelling station

installation .........................................................................................................................................................................21

5.3.8 Mitigation of risk to the high pressure hydrogen storage system of the

vehicle being fuelled ..................................................................................................................................................23

5.4 Safety distances ...................................................................................................................................................................................23

5.4.1 General...................................................................................................................................................................................23

5.4.2 Safety distances relating to hydrogen vent stack outlets ...........................................................24

5.5 Protection measures for non-hydrogen hazards ....................................................................................................24

5.5.1 General...................................................................................................................................................................................24

5.5.2 Protection measures for asphyxiation hazard in an enclosure (confined space) .24

5.5.3 Protection measures for emergency egress from enclosed spaces ...................................25

5.5.4 Ingress protection measures ..............................................................................................................................25

5.5.5 Protection measures for hose whip ..............................................................................................................25

5.5.6 Protection measures for noise ..........................................................................................................................26

5.5.7 Protection against exposure to extremely cold or hot temperatures ..............................26

6 Hydrogen supply safety and operation ......................................................................................................................................26

6.1 On site generation .............................................................................................................................................................................26

6.1.1 Hydrogen generators using water electrolysis ...................................................................................26

6.1.2 Hydrogen generators using fuel processing technologies ........................................................26

6.2 Hydrogen delivery .............................................................................................................................................................................27

6.2.1 Gaseous hydrogen supply by tube trailers and multiple element gas

containers (MEGC) ......................................................................................................................................................27

6.2.2 Liquid hydrogen supply by tanker .................................................................................................................28

6.3 Pipeline .......................................................................................................................................................................................................31

7 Equipment and Components .................................................................................................................................................................32

7.1 General recommendations.........................................................................................................................................................32

7.1.1 Hydrogen materials ....................................................................................................................................................32

7.1.2 Material hydrogen compatibility ....................................................................................................................32

7.1.3 Other material recommendations .................................................................................................................33

7.2 Piping carrying hydrogen ...........................................................................................................................................................33

7.2.1 General...................................................................................................................................................................................33

7.2.2 Pipe fittings, valves, hoses, for gaseous hydrogen .................. ..........................................................33

7.3 Hydrogen storage recommendations ...............................................................................................................................34

7.3.1 General...................................................................................................................................................................................34

7.3.2 Gaseous hydrogen storage vessels ................................................................................................................34

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ISO 19880-1:2020(E)

7.3.3 Gaseous hydrogen storage siting recommendations .....................................................................34

7.4 Hazardous areas (with potentially flammable mixtures) ...............................................................................36

7.4.1 General...................................................................................................................................................................................36

7.4.2 Equipment in hazardous areas .........................................................................................................................37

7.5 Hydrogen compressors .................................................................................................................................................................37

7.5.1 General...................................................................................................................................................................................37

7.5.2 Vibration and movement .......................................................................................................................................38

7.5.3 Control and monitoring ..........................................................................................................................................38

7.6 Instruments for gaseous hydrogen systems ...............................................................................................................39

7.7 Filters for gaseous hydrogen ....................................................................................................................................................39

7.8 Gaseous hydrogen vent systems ...........................................................................................................................................40

7.8.1 General...................................................................................................................................................................................40

7.8.2 Vent outlet ..........................................................................................................................................................................40

7.8.3 Vent sizing ...................................................................... .....................................................................................................41

7.8.4 Multiple relief devices ..............................................................................................................................................42

7.9 Pneumatics and hydraulics .......................................................................................................................................................42

7.10 Hydrogen purifier ..............................................................................................................................................................................43

7.11 Enclosures and buildings containing hydrogen equipment .........................................................................43

7.11.1 General design.................................................................................................................................................................43

7.11.2 Maintenance access and possible occupancy.......................................................................................43

7.11.3 Ventilation of enclosures and buildings containing hydrogen equipment .................44

7.11.4 Use of enclosures or compartments within enclosures to control hazards areas 44

7.11.5 Electrical and mechanical equipment within enclosures and buildings

containing hydrogen equipment .....................................................................................................................45

7.11.6 Over-pressure protection of enclosures and buildings containing

hydrogen equipment .................................................................................................................................................45

8 Dispensing systems .........................................................................................................................................................................................45

8.1 General requirements ....................................................................................................................................................................45

8.2 Hydrogen vehicle fuelling ...........................................................................................................................................................46

8.2.1 Dispensing system process control ..............................................................................................................46

8.2.2 Dispensing system safety devices ..................................................................................................................49

8.3 Dispensing systems ..........................................................................................................................................................................52

8.3.1 General design and assembly .............................................................................................................................52

8.3.2 Dispensing system hydrogen components .............................................................................................52

8.3.3 Dispenser housings and cabinets ...................................................................................................................55

8.3.4 Dispenser fuelling assembly ...............................................................................................................................55

8.4 Dispenser installation ....................................................................................................................................................................56

8.4.1 General...................................................................................................................................................................................56

8.4.2 Location and protection of dispensers ......................................................................................................56

8.4.3 Fuelling pad .......................................................................................................................................................................57

8.4.4 Hazardous area around the dispenser .......................................................................................................57

8.4.5 Installation of the fuelling assembly to prevent damage in service .................................57

8.4.6 Electrical continuity for bonding and grounding .............................................................................57

8.5 Operating considerations............................................................................................................................................................58

8.6 Maintenance and inspection ....................................................................................................................................................58

9 Hydrogen quality ...............................................................................................................................................................................................58

9.1 General ........................................................................................................................................................................................................58

9.2 Dispensing system fuel filters .................................................................................................................................................58

10 Electrical ....................................................................................................................................................................................................................59

10.1 General electrical ...............................................................................................................................................................................59

10.1.1 Components ......................................................................................................................................................................59

10.1.2 Site (interconnections to and/or between equipment assemblies) .................................59

10.1.3 Electrical bonding and grounding..................................................................................................................60

10.1.4 Lightning protection ..................................................................................................................................................60

10.2 Hazardous areas (potentially flammable mixtures) ............................................................................................60

10.2.1 General...................................................................................................................................................................................60

10.2.2 Protection requirements for electrical equipment within hazardous areas .............60

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ISO 19880-1:2020(E)

10.2.3 Protection from ignition due to accumulation of static charge ............................................60

10.3 Electromagnetic compatibility and interference (EMC) ..................................................................................62

10.3.1 General...................................................................................................................................................................................62

10.3.2 Industrial (EMC) Environments ......................................................................................................................62

10.3.3 Residential, Commercial, and Light-Industrial (EMC) Environments ............................62

11 Instrumentation and control system ............................................................................................................................................62

11.1 General ........................................................................................................................................................................................................62

11.2 Emergency shutdown functionality ...................................................................................................................................63

11.2.1 General...................................................................................................................................................................................63

11.2.2 Manually actuated emergency stop devices ..........................................................................................64

11.2.3 Hydrogen detection systems ..............................................................................................................................64

11.3 Remote system control .................................................................................................................................................................65

11.4 Modifications to control system ............................................................................................................................................66

12 Station inspection and tests ...................................................................................................................................................................66

12.1 General ........................................................................................................................................................................................................66

12.2 Pressure test ...........................................................................................................................................................................................66

12.3 Leak test .....................................................................................................................................................................................................67

12.4 Electrical testing .................................................................................................................................................................................67

12.5 Fuelling safety and performance functional testing ............................................................................................68

12.5.1 General...................................................................................................................................................................................68

12.5.2 Fuelling protocol test ................................................................................................................................................68

12.5.3 Test procedure ................................................................................................................................................................69

12.5.4 Site acceptance testing options ........................................................................................................................69

12.5.5 Additional performance considerations for fuelling .....................................................................71

12.6 Hydrogen quality testing .............................................................................................................................................................72

12.7 Station inspection and tests following modifications ........................................................................................72

13 Operation ..................................................................................................................................................................................................................72

13.1 General ........................................................................................................................................................................................................72

13.2 Warning signs .......................................................................................................................................................................................72

13.3 Dispenser operational instructions ...................................................................................................................................73

13.4 Functional identification .............................................................................................................................................................74

13.5 Marking of equipment (data plate) ....................................................................................................................................74

13.6 Reference designations .................................................................................................................................................................75

13.7 Training ......................................................................................................................................................................................................75

13.8 Emergency response plan ..........................................................................................................................................................75

13.9 Emergency contact information ...........................................................................................................................................76

14 Technical documentation .........................................................................................................................................................................76

14.1 General ........................................................................................................................................................................................................76

14.2 Information to be provided .......................................................................................................................................................76

14.3 Recommendations applicable to all documentation ...........................................................................................78

14.4 Installation documents .................................................................................................................................................................78

14.4.1 General...................................................................................................................................................................................78

14.4.2 Installation documentation for hazardous areas ..............................................................................79

14.4.3 Venting documentation ...........................................................................................................................................79

14.4.4 Seismic documentation ...........................................................................................................................................79

14.4.5 Handling and lifting documentation ............................................................................................................79

14.5 Overview diagrams and function diagrams ................................................................................................................80

14.6 Circuit diagrams ..................................................................................................................................................................................80

14.7 Flow (P&ID) diagrams ...................................................................................................................................................................80

14.8 Fuelling station operating manual ......................................................................................................................................81

14.9 Maintenance and service manuals ......................................................................................................................................81

14.10 Parts list .....................................................................................................................................................................................................81

15 Inspection and maintenance .................................................................................................................................................................82

15.1 Inspection and maintenance program.............................................................................................................................82

15.2 Maintenance and testing frequency of gas detection .........................................................................................83

15.3 Maintenance and inspection frequency of filters ...................................................................................................83

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ISO 19880-1:2020(E)

15.4 Maintenance of pressure relief devices ..........................................................................................................................84

15.5 Hot work ....................................................................................................................................................................................................84

15.6 Modifications to the hydrogen fuelling station and associated equipment.....................................84

Annex A (informative) Safety methodologies and risk assessment ..................................................................................85

Annex B (informative) Further guidance on risk manageme
...

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