ISO 19880-5:2019 pdf – Gaseous hydrogen — Fuelling stations — Part 5: Dispenser hoses and hose assemblies.
1 Scope This document specifies the requirements for wire or textile reinforced hoses and hose assemblies suitable for dispensing hydrogen up to 70 MPa nominal working pressure, in the operating temperature range of −40 °C to 65 °C. This document contains safety requirements for material, design, manufacture and testing of gaseous hydrogen hose and hose assemblies for hydrogen fuelling stations. Hoses and hose assemblies excluded from the scope of this document are the following: 1) those used as part of a vehicle high pressure on-board fuel storage system, 2) those used as part of a vehicle low pressure fuel delivery system, and 3) flexible metal hoses. NOTE 1 This document was developed primarily for hoses and hose assemblies for dispensing high pressure hydrogen from refuelling dispensers to hydrogen vehicles. Requirements for hoses used to deliver hydrogen from a transportable vessel (e.g. trailer) into a buffer storage of a station are addressed in ISO 16964. NOTE 2 Hose assemblies include the hose with connectors on each end (see Figure 1). Each connector has two basic functional elements that are addressed as described below: 1) Coupling to hose. This function is defined by requirements and verified (along with the hose itself) by performance-based tests in this document. 2) Fitting for transition and connection to the piping system or equipment. This function is addressed by reference to appropriate hydrogen equipment standards and piping codes.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 4080:2009, Rubber and plastics hoses and hose assemblies — Determination of permeability to gas ISO 6802, Rubber or plastics hoses and hose assemblies — Hydraulic impulse test with flexing ISO 6803:2017, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexing ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions ISO 8031:2009, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and conductivity ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary ISO 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and maintenance ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
3? Terms? and? definitions For the purpose of this document, the terms and definitions given in ISO 8330, ISO 19880-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https:// www .iso .org/ obp — IEC Electropedia: available at http:// www .electropedia .org/ 3.1 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 (3.4) are a type of connector used in piping systems. Note 2 to entry: Examples of connectors commonly used in hydrogen systems are as follows: a) The fuelling nozzle “connector” mates with the receptacle “connector” on the vehicle to form the connection for transfer of compressed hydrogen between the dispenser and the vehicle, as defined in ISO 17268 for this specific application. b) The hose assemblies have connectors on each end that allow coupling (3.2) to the hoses and connection to the piping system (e.g. hose breakaway device or fuelling nozzle). c) Control systems often use electrical connectors to allow rapid and secure assembly or replacement. 3.2 coupling integrated structure of nipple and socket with end portion of a hose crimped together as shown in Figure 1 3.3 dispenser hose fuelling hose hose assembly (3.5) used for dispensing gaseous hydrogen to vehicles through a nozzle Note 1 to entry: See Figure 2.