ISO 19880-1:2020 ガス状水素—燃料補給ステーション—パート1：一般要件 | ページ 5

3.1

acceptance criteria

3.2

accessory

device with an operational function

3.3

bleed

<venting> intentional expiration of a fluid from a fluid system

3.4

basic process control system

BPCS

system which responds to input signals from the process, its associated equipment, other programmable systems and/or an operator and generates output signals causing the process and its associated equipment to operate in the desired manner but which does not perform any safety-instrumented functions with a claimed SIL (3.73) ≥ 1

[SOURCE:IEC 61511-1:2004, 3.2.3]

3.5

breakaway device

device on the fuelling hose (3.27) that disconnects the hose from the dispenser (3.13) when a tension limit is exceeded and blocks the flow of hydrogen from the dispenser, e.g. if the vehicle moves away with the fuelling hose connected to the vehicle

3.6

buffer storage vessels

pressure vessels designed for the purpose of storing compressed hydrogen, which can be located between a hydrogen generator and a compressor for an even flow of gas to the compressor or between the compressor and dispensing system (3.17) for accumulation of pressurized gas supply for vehicle fuelling

3.7

building

structure, usually enclosed by walls and a roof, constructed to provide support or shelter for intended occupancy

3.8

canopy

roof, overhead shelter, or hood which affords a degree of weather protection

3.9

compressed hydrogen storage system

CHSS

hydrogen storage on-board vehicle, as defined in the GTR#13

3.10

component pressure rating

maximum pressure at which it is permissible to operate a component as specified by the manufacturer at a specified temperature

Note 1 to entry: Components designed with a maximum allowable pressure per the European PED represent the component pressure rating by the manufacturer that as indicated by the value of “PS”.

Note 2 to entry: This is sometimes referred to as the maximum allowable working pressure (3.45) for the component, for example for vessels.

Note 3 to entry: In addition to the specification of the maximum temperature, the manufacturer can define an allowable minimum temperature or temperature range expected for service. For additional thermal conditions and risks potentially experiences during fires (3.23) , see 5.3.6.4.

Note 4 to entry: Pressures up to 10 % above the rating can occur during fault management by PSV. See E.3 regarding limited cycle testing to 110 % of the rating as part of verification testing to demonstrate capability of the component.

Note 5 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems (3.17) and fuelling stations (3.29) in general.

3.11

control system

system which responds to input signals from the process and/or from an operator and generates output signals causing the process to operate in the desired manner

Note 1 to entry: Also see safety-instrumented system (SIS) (3.72) and basic process control system (BPCS) (3.4) .

3.12

connector

matching parts (such as male and female parts) that can be put together to form a"connection" which permits the transfer of fluids, electric power, or control signals

Note 1 to entry: Fittings (3.24) are a type of connector used in piping systems.

3.13

dispenser

equipment in the dispensing system (3.17) , including the dispenser cabinet(s) (3.14) and support structure, that is physically located in the fuelling area

Note 1 to entry: The hydrogen dispenser typically includes, as a minimum, the fuelling assembly (3.26) , required temperature and pressure instrumentation, filters, and the user interface to conduct vehicle fuelling.

Note 2 to entry: The manufacturer of the hydrogen dispenser can elect to include additional equipment in the dispenser, including the possibility of all equipment in the dispensing system.

3.14

dispenser cabinet

protective housing (3.40) that encloses process piping and can also enclose measurement, control and ancillary dispenser (3.13) equipment

3.15

dispenser fuel pressure

pressure of the hydrogen gas supplied to the vehicle by the station

Note 1 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems (3.17) .

3.16

dispenser fuel temperature

temperature of the hydrogen gas supplied to the vehicle by the station

3.17

dispensing system

system downstream of the hydrogen supply system comprising all equipment necessary to carry out the vehicle fuelling operation, through which the compressed hydrogen is supplied to the vehicle

3.18

enclosure

structure, protective housing (3.40) , container, machine cabinet, etc. which encloses or partially encloses equipment of a station that may have access for maintenance but is not intended to be occupied

Note 1 to entry: The use of an enclosure could be to protect equipment from the environment, provide noise attenuation, or provide safety (3.69) to the areas surrounding the equipment.

Note 2 to entry: A canopy (3.8) without walls is not regarded as an enclosure in this context.

3.19

explosion

ignition and rapid combustion that causes an over-pressure

Note 1 to entry: A rapid deflagration and/or a detonation are explosions.

Note 2 to entry: Slow deflagrations or jet flames do not create an over-pressure and are therefore not considered to be explosions.

3.20

explosive gas atmosphere

mixture with air, under atmospheric conditions, of flammable substances in the form of gas or vapour, which, after ignition, permits self-sustaining flame propagation

Note 1 to entry: Although a mixture which has a concentration above the upper flammable limit (UFL) is not an explosive gas atmosphere, it can readily become so and, generally for area classification purposes, it is advisable to consider it as an explosive gas atmosphere.

[SOURCE:IEC 60079-10-1:2015, 3.2]

3.21

factory acceptance testing

FAT

tests performed in the factory on fuelling station (3.29) equipment or systems to verify functionality and/or integrity prior to shipment to the site, (or an appropriate alternative type acceptance methodology)

3.22

fallback

back-up control strategy, for example in the fuelling protocol when the anticipated precooling of hydrogen to within a specified range of temperatures is not achieved, however fuelling is able to continue, typically at a different fuelling rate

3.23

fire

non-premixed combustion process of a solid, liquid pool, or a jet plume of flammable substance

Note 1 to entry: A fire is the combustion of a solid or liquid of a process first of pyrolysis or evaporation to a combustible gas where a non-premixed combustion process ensues. Also, a non-premixed combustion of a flammable plume (jet fire) is also covered by this definition as is combustion of metals and of hydrogen released by a metal hydride. A fire as defined here does not create an over-pressure therefore is not an explosion (3.19) , nor is it a deflagration or a detonation which are premixed combustion phenomena.

3.24

fitting

part or design feature on a component used to join (i.e. connect) any pressure retaining components in the system

3.25

forecourt

surfaced area where vehicle dispensing operations are conducted including the fuelling pad (3.28) and any area underneath a canopy (3.8)

3.26

fuelling assembly

part of the dispenser (3.13) providing the interface between the hydrogen fuelling station (3.29) and the vehicle - an assembly consisting of a hose breakaway device (3.5) , a hose(s), a nozzle (3.53) and connections between these components

Note 1 to entry: The fuelling assembly can include, or not, a nozzle vent line (with hose breakaway device and hose) depending on the type of nozzle, and communications, if used.

3.27

fuelling hose

flexible conduit used for dispensing gaseous hydrogen to vehicles through a fuelling nozzle (3.53)

3.28

fuelling pad

area with special construction requirements adjacent to the hydrogen dispensers (3.13) ここで, customers park their vehicles during fuelling

3.29

hydrogen fuelling station

fuelling station

facility for the dispensing of compressed hydrogen vehicle fuel, often referred to as a hydrogen refuelling station (HRS) or hydrogen filling station, including the supply of hydrogen, and hydrogen compression, storage, and dispensing systems (3.17)

3.30

stand-alone

<hydrogen fuelling station or dispenser> independent for the dispensing of compressed hydrogen only

3.31

integrated

<hydrogen fuelling station or dispenser> being part of an existing, or new build, conventional fuelling station (3.29) for the dispensing of compressed hydrogen

3.32

fuelling station operator

person or organization responsible for the safe operation, maintenance and housekeeping of the fuelling station (3.29)

3.33

guard

part of a machine specially used to provide protection by means of a physical barrier

Note 1 to entry: Depending on its construction, a guard can be called casing, cover, screen, door, enclosed guard, etc.

3.34

harm

physical injury or damage to the health of people, or damage to property or the environment

[SOURCE:ISO/IEC Guide 51:2014, 3.1, modified — The word"physical" has been added.]

3.35

harmonised standard

European standard developed by a recognised European Standards Organization (CEN, CENELEC, or ETSI), in line with a European Directive

3.36

hazard

potential source of harm (3.34)

[SOURCE:ISO/IEC Guide 51: 2014, 3.2]

3.37

hazard distance

distance from the hazard (3.36) to a determined physical effect value that can lead to a range of harm (3.34) to people, equipment or environment

Note 1 to entry: It can be used as an input to quantitative risk assessment (3.66) to, for example, estimate the risk of injury or fatality to people (e.g. via probit functions).

Note 2 to entry: Hazards include, for example, physical, thermal, or pressure effects that can cause harm and can be determined by physical or numerical modelling, experience, or by a regulation.

3.38

hazardous area

classified area

<explosive gas atmospheres> area in which an explosive gas atmosphere (3.20) is or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of equipment

Note 1 to entry: The interior of many items of process equipment are commonly considered as a hazardous area even though a flammable atmosphere may not normally be present to account for the possibility of air entering the equipment. Where specific controls such as inerting are used the interior of process equipment may not need to be classified as a hazardous area.

[SOURCE:IEC 60079-10-1:2015, 3.3.1, modified — The alternative preferred term"classified area" has been added.]

3.39

hose assembly

assembly which includes the hose and end connections, including any necessary fittings (3.24) , bend restrictors, and appropriate markings.

3.40

housing

guard (3.33) or enclosure (3.18) for operating parts, control mechanisms, or other components, that need not be accessible during normal operation

3.41

hydrogen purifier

equipment to remove undesired constituents from the hydrogen

Note 1 to entry: Hydrogen purifiers can comprise purification vessels, dryers, filters and separators.

3.42

hydrogen service level

HSL

pressure level in MPa used to characterize the hydrogen service of the dispensing system (3.17) based on the NWP (3.51) of the vehicle.

Note 1 to entry: The numerical value of HSL also matches the number after the “H” in the pressure class (3.58) (see Table 1).

Note 2 to entry: See Annex E for application of pressure terminology to hydrogen dispensing systems and vehicles.

3.43

incident

any unplanned event that resulted in injury or ill health of people, or damage or loss to property, plant, materials or the environment or a loss of business opportunity

Note 1 to entry: The use of the term incident is intended to include the term accident.

3.44

lower flammable limit

LFL

concentration of flammable gas, vapour or mist in air below which an explosive gas atmosphere (3.20) will not be formed

[SOURCE:IEC 60079-10-1:2015, 3.6.12]

3.45

maximum allowable working pressure

MAWP

maximum pressure permissible in a system at the temperature specified for the pressure

Note 1 to entry: The maximum allowable working pressure can also be defined as the design pressure, the maximum allowable operating pressure, the maximum permissible working pressure, or the maximum allowable pressure for the rating of pressure vessels and equipment manufactured in accordance with national pressure vessel codes.

Note 2 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems (3.17) and fuelling stations (3.29) in general.

3.46

maximum fuelling pressure

MFP

maximum pressure expected during a normal (fault-free) vehicle fuelling

Note 1 to entry: Per the GTR#13, the maximum fuelling pressure is 125 % NWP (3.51) (see Annex D).

Note 2 to entry: Also referred to as Maximum Fill Pressure.

Note 3 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems (3.17) and fuelling stations (3.29) in general.

3.47

maximum operating pressure

MOP

highest pressure that is expected for a component or system during normal operation including anticipated transients

Note 1 to entry: In the case of the dispensing system (3.17) , the MOP is equivalent to the maximum fuelling pressure (3.46) of the vehicle.

Note 2 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems and fuelling stations (3.29) in general.

3.48

mitigation

combination of the measures incorporated at the design stage and the measures required to be implemented by the station operator, dispenser (3.13) operator, or others involved with the operation and maintenance of the fuelling station (3.29) to reduce the probability (3.60) or severity of an incident (3.43)

3.49

mobile storage

multiple-element gas container (3.50) or liquid hydrogen tank fixture mounted on a vehicle or trailer and used for the transportation of hydrogen to hydrogen fuelling stations (3.29)

3.50

multiple-element gas container

MEGC

multimodal assembly of cylinders, tubes or bundles of cylinders which are interconnected by a manifold and assembled within a framework, including service equipment and structural equipment necessary for the transport of gases

Note 1 to entry: This definition is taken from the UN Model Regulations. ADR^[79] uses a different definition.

[SOURCE:ISO 10286:2015, 2.2.1, 210]

3.51

nominal working pressure

NWP

pressure of a vehicle CHSS (3.9) at 100 % SOC (3.78) at a gas temperature of 15 ºC

Note 1 to entry: See GTR#13 clause II-3.37, on page 54.

Note 2 to entry: For road vehicles, this is typically 35 MPa or 70 MPa.

Note 3 to entry: See Annex E for discussion of pressure terminology and the correspondence between vehicle terminology and dispensing systems (3.17) .

Note 4 to entry: Also known as “settled pressure” in ISO 10286.

3.52

non-public fuelling station

fuelling station (3.29) that does not sell or dispense gaseous hydrogen to the general public

3.53

nozzle

device connected to a fuel dispensing system (3.17) , which permits the quick connect and disconnect of fuel supply to the vehicle storage system

[SOURCE:ISO 17268:2012, 3.8]

3.54

outdoors

location outside of any building (3.7) or structure, or location under a roof, weather shelter, or canopy (3.8) provided this area is not enclosed on more than two sides

3.55

plinth

raised area on the forecourt (3.25) , supporting and protecting the dispensers (3.13) and associated equipment

3.56

positive isolation

complete separation of one part of the plant or equipment from other parts of the system

Note 1 to entry: Positive isolation can be provided to equipment or piping items for maintenance purposes using various arrangements depending on following factors, as piping rating, equipment in shutdown or equipment under service.

Note 2 to entry: Physical disconnection, for example, spool removal, or use of a blind or a spade are typical ways to provide positive isolation.

Note 3 to entry: Alternatively, proved isolation (3.61) can be deemed acceptable based on risk assessment (3.66) .

Note 4 to entry: Further information can be found in HSG253.

3.57

pre-cooling

process of cooling hydrogen fuel temperature prior to dispensing

3.58

pressure class

non-dimensional rating of components designed to dispense hydrogen to road vehicles at the required pressure and temperature

Note 1 to entry: The numbers following ‘H’ in the pressure class are numerically the same as HSL (3.42) , but the HSL identifies only the level of the dispensing service whereas the pressure class designation shows the component are fully capable of meeting the pressure and temperature requirements for dispensing hydrogen at the indicated service level.

Note 2 to entry: See Annex E for discussion of pressure terminology and its application to dispensing systems (3.17) and fuelling stations (3.29) in general.

Note 3 to entry: Additional examples of pressure class come from ISO 15649; e.g."600","3000" or"6000".

3.59

pressure relief device

PRD

safety (3.69) device that releases gases or liquids above a specified pressure value in cases of emergency or abnormal conditions

Note 2 to entry: See Annex E for discussion of pressure terminology and its application to pressure protection of the dispensing system and fuelling stations (3.29) in general.

3.60

probability

expression of the chance (likelihood) that a considered event will take place to property, system, business or to the environment

3.61

proved isolation

valved isolation where the effectiveness of valves closure can be confirmed via vent or bleed (3.3) points

Note 1 to entry: Proved isolation can often be used instead of positive isolation (3.56) ここで, this is deemed acceptable based on risk assessment (3.66) .

Note 2 to entry: An assembly commonly referred to as Double Block and Bleed is often used. For such systems, two block valves are required for additional isolation between the operational process side and the device requiring maintenance. A bleed valve is used to drain or vent the fluids trapped between the two block valves.

Note 3 to entry: Further information can be found in HSG253.

3.62

public fuelling station

fuelling station (3.29) that sells gaseous hydrogen to the general public

3.63

qualified personnel

personnel with knowledge or abilities, gained through training and/or experience as measured against established requirements, standards or tests, that enable the individual to perform a required function

[SOURCE:ISO 10417:2004, 3.13, modified — The word"characteristics" has been replaced with"knowledge".]

3.64

receptacle

device connected to a vehicle storage system which receives the nozzle (3.53)

Note 1 to entry: This can also be referred to as a fuelling inlet or gas filling port in other documents.

[SOURCE:ISO 17268:2012, 3.11]

3.65

risk

combination of the probability (3.60) of occurrence of harm (3.34) and the severity of that harm; encompassing both the uncertainty about and severity of the harm

[SOURCE:ISO/IEC Guide 51:2014, 3.9, modified — The part “encompassing both the uncertainty about and severity of the harm” has been added; Note 1 to entry has been removed.]

3.66

risk assessment

determination of quantitative or qualitative value of risk related to a specific situation and a recognised threat (also called hazard (3.36) )

Note 1 to entry: Based on national requirements, a review of a risk analysis or a safety (3.69) concept by third party is sometimes required.

3.67

risk level

assessed magnitude of the risk

3.68

safeguarding

instruments or final elements related to safety-instrumented system, SIS (3.72) , or pressure relief device, PRD (3.59)

Note 1 to entry: Safeguarding can be instrumental safeguarding or mechanical safeguarding.

3.69

safety

freedom from unacceptable risk

[SOURCE:ISO/IEC Guide 51:2014, 3.14]

3.70

safety distance

separation distance

safe distance

setback distance

distance to acceptable risk level (3.67) or minimum risk-informed distance between a hazard (3.36) source and a target (human, equipment or environment), which will mitigate the effect of a likely foreseeable incident (3.43) and prevent a minor incident escalating into a larger incident

Note 1 to entry: Safety distances could be split into Restriction distances, Clearance distances, Installation layout distances, Protection distances and External risk zone. See A.5.2 for further details.

3.71

safety function

function to be implemented by a safety-instrumented system (3.72) , which is intended to achieve or maintain a safe state for the process, with respect to a specific hazardous situation

Note 1 to entry: Other technologies or risk reduction measures have a safety function not achieved through a safety-instrumented system, however validation of these measures is equally important.

3.72

safety-instrumented system

SIS

instrumented system used to implement one or more safety-instrumented functions

Note 1 to entry: A safety-instrumented system is composed of any combination of sensors, logic solvers, and final elements.

Note 2 to entry: A separate safety-instrumented system (SIS), typically with a greater reliability than the more basic process control system (BPCS) (3.4) , can be required, according to the manufacturer’s risk assessment (3.66) , to respond solely to safety critical alarms. Further information is provided by IEC 61508 and IEC 61511.

3.73

safety integrity level

SIL

discrete level (one out of a possible four), corresponding to a range of safety integrity values ここで, safety integrity level 4 has the highest level of safety integrity and safety integrity level 1 has the lowest

Note 1 to entry: The target failure measures (see IEC 61508-4) for the four safety integrity levels are specified in IEC 61508-1:2010, Tables 2 and 3.

Note 2 to entry: Safety integrity levels are used for specifying the safety integrity requirements of the safety functions (3.71) to be allocated to the E/E/PE safety-related systems (3.74) .

Note 3 to entry: A safety integrity level (SIL) is not a property of a system, subsystem, element or component. The correct interpretation of the phrase “SIL n safety-related system” (where n is 1, 2, 3 or 4) is that the system is potentially capable of supporting safety functions with a safety integrity level up to n.

Note 4 to entry: See 8.2.

[SOURCE:IEC 61508-4:2010, 3.5.8, modified — Note 4 to entry has been added.]

3.74

safety-related system

designated system that both implements the required safety functions (3.71) necessary to achieve or maintain a safe state for the EUC and is intended to achieve, on its own or with other E/E/PE safety-related systems, other technology safety-related systems or external risk reduction facilities, the necessary safety integrity for the required safety functions

Note 1 to entry: The term refers to those systems, designated as safety-related systems, that are intended to achieve, together with the external risk reduction facilities (IEC 61508-5:2010, 3.4.3), the necessary risk reduction in order to meet the required tolerable risk (IEC 61508-5:2010, 3.1.6 and Annex A).

Note 2 to entry: The safety-related systems are designed to prevent the EUC from going into a dangerous state by taking appropriate action on receipt of commands. The failure of a safety-related system would be included in the events leading to the determined hazard (3.36) or hazards. Although there can be other systems having safety functions, it is the safety-related systems that have been designated to achieve, in their own right, the required tolerable risk. Safety-related systems can broadly be divided into safety-related control systems (3.11) and safety-related protection systems, and have two modes of operation (IEC 61508-5:2010, 3.5.12).

Note 3 to entry: Safety-related systems are potentially an integral part of the EUC control system or interface with the EUC by sensors and/or actuators. That is, the required safety integrity level (3.73) is achieved by implementing the safety functions in the EUC control system (and possibly by additional separate and independent systems as well) or the safety functions can be implemented by separate and independent systems dedicated to safety.

3.75

site acceptance testing

SAT

tests performed after installation of the fuelling station (3.29) at the site to verify functionality and/or integrity

3.76

skid

process system contained within a frame that allows the process system to be easily transported and installed for operation

3.77

standards development organization

SDO

industry- or sector-based standards organizations that develop and publish industry specific standards

Note 1 to entry: In some cases, international industry-based SDOs may have direct liaisons with international standards organizations. SDOs are differentiated from standards setting organizations (SSOs) in that SDOs may be accredited to develop standards using open and transparent processes.

Note 2 to entry: In the European Union, only standards created by CEN, CENELEC, and ETSI are recognized as European standards, and member states are required to notify the European Commission and each other about all the draft technical regulations. These rules were laid down in Directive 2015/1535/EU with the goal of providing transparency and control with regard to technical regulations.

3.78

state of charge

SOC

density (or mass) ratio of hydrogen in the compressed hydrogen storage system (CHSS) (3.9) between the actual CHSS condition and the capacity at NWP (3.51) when the system is equilibrated at 15 °C

Note 1 to entry: SOC is expressed as a percentage and is computed based on the gas density according to formula below.

Note 2 to entry: The accuracy of the NIST formula has been quantified to be to within 0,01 % from 255 K to 1 000 K with pressures to 120 MPa at the publishing of this document.

Note 4 to entry: The ρ₁ function for hydrogen is available from the National Institute of Standards and Technology (NIST) at https://nvlpubs.nist.gov/nistpubs/jres/113/6/V113.N06.A05.pdf .

3.79

target pressure

dispenser (3.13) fuel pressure that the hydrogen fuelling protocol targets for the end of fuelling

Note 1 to entry: Further guidance on pressure terminology is included in Annex E.

3.80

vaporizer

device, other than a tank, that receives hydrogen in a liquid form and adds sufficient heat to convert the liquid to a gaseous state

3.81

maximum developed pressure

maximum accumulated pressure

highest pressure expected during fault management by the dispensing system (3.17)

Note 1 to entry: Per the GTR, the maximum developed pressure is 1,50 × NWP. See Annex D.

Note 2 to entry: The estimate of maximum developed pressure is based on a “worst case” assumptions — the highest possible setpoint for the pressure protection and maximum allowable values for setpoint accuracy and “lift” to open the PSV for full relieving.