ISO 19885-1:2024 水素ガス | ページ 6

3.1

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

Note 1 to entry: a BPCS does not perform any safety-instrumented functions with a claimed SIL ≥ 1.

[SOURCE:IEC 61511:2004, 3.2.3]

3.2

compressed hydrogen storage system

CHSS

system designed to store compressed hydrogen fuel for a hydrogen-fuelled road vehicle, composed of a container, container attachments (if any), and all primary closure devices required to isolate the stored hydrogen from the remainder of the fuel system and the environment

Note 1 to entry: The above definition is specific to hydrogen road vehicles where the CHSS has one (and only one) container with dedicated primary closures devices. See A.3.

Note 2 to entry: Hydrogen road vehicles typically have more than one CHSS. See vehicle fuel system (3.27) .

Note 3 to entry: The CHSS can also include actuators, sensors, and electronics as deemed necessary by the vehicle manufacturer.

[SOURCE:ECE/TRANS/180/Add.13/Amend.1 UN GTR No. 13, UN Global Technical Regulation on Hydrogen and Fuel Cell Vehicles: 2023, 3.6]

3.3

container

pressure-bearing component on the road vehicle within the hydrogen storage system that stores the primary volume of hydrogen fuel in a single chamber or in multiple permanently interconnected chambers

Note 1 to entry: Cylinders and conformable containers are types of containers for road vehicles. See A.3.

[SOURCE:ECE/TRANS/180/Add.13/Amend.1 UN GTR No. 13, UN Global Technical Regulation on Hydrogen and Fuel Cell Vehicles: 2023, 3.8]

3.4

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

3.5

data

design characteristics and limits, process measurements (such as temperature, pressure, and flow), and associated calculated parameters of the interconnected dispensing system and vehicle fuel system during the fuelling process

Note 1 to entry: Calculated parameters can be based on, for example, interpolations of data tables such as fuelling tables for containers as well as formulas or equations involving other data.

3.5.1

dynamic data

data (3.5) such as temperature and pressure measurements, and associated calculated parameters that are expected to change value with time during the fuelling process

3.5.2

static data

data (3.5) such as design characteristics and limits and associated calculated parameters that are expected to remain constant with time during the fuelling process

3.6

dispenser

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

Note 1 to entry: The hydrogen dispenser typically includes the fuelling assembly, 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 include additional equipment in the dispenser, including all equipment in the dispensing system.

3.7

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

3.8

fuelling envelope

required design space for the fuelling protocol that captures extreme combinations of hydrogen fuelling and storage systems on vehicles to be fuelled, the ambient and operating conditions of the vehicle during operation and dispensing, and the capabilities and limitations of the vehicle fuel system and dispensing systems

3.9

fuelling protocol

technical descriptions, instructions, or constructs that define how the dispensing of compressed gaseous hydrogen to storage systems on vehicles is to be conducted

Note 1 to entry: The fuelling protocol serves as the basis for defining control strategies and algorithms for implementation in the BPCS (3.1) hardware and software of the dispensing control system

Note 2 to entry:Fuelling protocols can range from simple descriptions that can be performed in hardware to complex programmable control functions using prescribed values, tables, and/or reduced-order models as well as conventional process controls such as feedforward-feedback and predictor-corrector control functions.

3.10

fuelling station

hydrogen fuelling station

hydrogen refuelling station

HRS

facility for the dispensing of compressed hydrogen vehicle fuel, including the supply of hydrogen, and hydrogen compression, storage, and dispensing systems

3.11

hydrogen service level

HSL

pressure level in MPa used to characterize the hydrogen service of the dispensing system based on the NWP of the vehicle

Note 1 to entry: See ISO 19880-1:2020, Annex E for application of pressure terminology to hydrogen dispensing systems and vehicles.

3.12

maximum allowable working pressure

MAWP

maximum pressure permissible in a system at the temperature specified

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 ISO 19880-1:2020, Annex E for discussion of pressure terminology and its application to dispensing systems and fuelling stations in general. Pressures are understood to be gauge unless otherwise specifically indicated in this document.

3.13

maximum developed pressure

MDP

highest pressure achieved during infrequent, short-term excursions above MAWP during fault management

Note 1 to entry: See ISO 19880-1:2020, Annex E for a discussion of pressure terminology and its application to dispensing systems and fuelling stations in general. Pressures are understood to be gauge unless otherwise specifically indicated in this document.

3.14

maximum fuelling pressure

MFP

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

Note 1 to entry: Per GTR#13, the maximum fuelling pressure is 125 % NWP for road vehicles.

Note 2 to entry: See ISO 19880-1:2020, Annex E for a discussion of pressure terminology and its application to dispensing systems and fuelling stations in general. Pressures are understood to be gauge unless otherwise specifically indicated in this document.

3.15

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 (3.7) , the MOP is equivalent to the maximum fuelling pressure (3.14) of the vehicle.

Note 2 to entry: See ISO 19880-1:2020, Annex E for discussion of pressure terminology and its application to dispensing systems and fuelling stations in general. Pressures are understood to be gauge unless otherwise specifically indicated in this document.

3.16

nominal working pressure

NWP

pressure within a hydrogen storage container(s) in the vehicle fuel system at 100 % SOC at a gas temperature of 15 °C

Note 1 to entry: For road vehicles, this is typically 35 MPa or 70 MPa.

Note 2 to entry: See ISO 19880-1:2020, Annex E for discussion of pressure terminology and the correspondence between vehicle terminology and dispensing systems. Pressures are understood to be gauge unless otherwise specifically indicated in this document.

Note 3 to entry: Also known as “settled pressure” in ISO 10286.

[SOURCE:ISO 19880-1:2020, 3.51, modified to replace “CHSS” for road vehicles with the more general term “hydrogen storage container(s) in the vehicle fuel system”. ]

3.17

non-comm fuelling

fuelling that is conducted without communications between the vehicle and the dispensing control system

Note 1 to entry:Non-comm fuelling is equivalent to a UCDC (3.25) of 0.

3.18

non-public fuelling station

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

[SOURCE:ISO 19880-1:2020, 3.52]

3.19

physics-based model

representation of the governing laws of nature such as the equation of state for compressed hydrogen gas and the conservation of mass, momentum and energy as applied in thermodynamics, fluid mechanics and heat and mass transfer equations

Note 1 to entry: Physics-based models can be empirically adjusted to improve accuracy within the range of interest.

3.20

public fuelling station

fuelling station that sells gaseous hydrogen to the public

[SOURCE:ISO 19880-1:2020, 3.62, modified - the text “general public” has been changed to"public"]

3.21

risk assessment

determination of quantitative or qualitative value of risk related to a specific situation and a recognised threat

Note 1 to entry: See ISO 19880-1 for a discussion of the risk assessment process as well as examples of threats and hazards.

Note 2 to entry: A recognized threat is also referred to as a hazard.

[SOURCE:ISO 19880-1:2020, 3.66, modified - text from the definition moved to Note 2 to entry.]

3.22

safety function

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

Note 1 to entry: See ISO 19880-1 for a discussion of safety-instrumented systems and their application to dispensing systems and fuelling stations in general.

[SOURCE:ISO 19880-1:2020, 3.71, modified - Note 1 to entry has been replaced.]

3.23

standards development organization

SDO

industry- or sector-based standards organization that develops and publishes industry specific standards

Note 1 to entry: In some cases, international industry-based SDOs can 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.

[SOURCE:ISO 19880-1:2020, 3.77]

3.24

state of charge

SOC

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

Note 1 to entry: SOC is typically expressed as a percentage. See ISO 19880-1:2020, 3.78 for details related to the calculation process.

[SOURCE:ISO 19880-1:2020, 3.78, modified - replaced CHSS (3.2) for road vehicles with the more general term “vehicle fuel system” (3.27) and Notes 1 to 4 to entry have been removed.]

3.25

use classification of data communicated

UCDC

3.26

validation

assurance that a product, service, or system meets the needs of the customer and other identified stakeholders

Note 1 to entry: See the definition of verification (3.28) .

3.27

vehicle fuel system

assembly of components used to store or supply hydrogen fuel to a fuel cell (FC) or internal combustion engine (ICE).

Note 1 to entry: For road vehicles, the vehicle fuel system includes all CHSSs (3.2) on the vehicle where the CHSSs are interconnected in parallel.

[SOURCE:ECE/TRANS/180/Add.13/Amend.1 UN GTR No. 13, UN Global Technical Regulation on Hydrogen and Fuel Cell Vehicles: 2023, 3.54]

3.28

verification

evaluation using subscale and full-scale tests, analyses, or a combination of tests and analyses that demonstrate a product, service, or system complies with regulations, requirements, specifications, or imposed conditions.

Note 1 to entry:Verification is typically conducted as part of the development process whereas validation (3.26) is typically conducted after the completion of development to confirm acceptability to customers and stakeholders.