ISO 19882:2025

Overview

ISO 19882:2025 - "Gaseous hydrogen - Thermally activated pressure relief devices for compressed hydrogen vehicle fuel containers" - is the second edition (2025) international standard that defines minimum requirements for thermally activated pressure relief devices (TPRDs) used on compressed hydrogen vehicle fuel containers. It is focused on TPRDs installed on containers holding gaseous hydrogen (fuel quality per ISO 14687) and intended for onboard use in light‑duty vehicles, heavy‑duty vehicles, and industrial powered trucks (e.g., forklifts). The standard excludes reseating/resealing or pressure‑activated devices and applies only to thermally activated designs of any manufacturing method that meet the specified requirements.

Key topics and technical requirements

ISO 19882:2025 organizes requirements across design, materials, testing and production control. Major technical topics include:

• Service conditions: design service life, nominal working pressure, durability cycles and operating temperature range.
• Materials & design: material requirements for metallic and non‑metallic parts, general design requirements, and flow capacity expectations.
• Safety analysis: requirement for Failure Modes and Effects Analysis (FMEA) to identify hazards and mitigation.
• Design qualification testing: comprehensive test regimes such as pressure cycling, accelerated life and thermal cycling, corrosion and environmental exposure, stress corrosion cracking resistance, impact (drop) and vibration, leakage, bench‑top activation (direct‑acting and pilot‑activated PRDs), high‑pressure activation/flow, hydrostatic strength, excess torque resistance, and water‑jet protection.
• Quality assurance & production: inspection and acceptance testing plans, inspector responsibilities, system component inspection, leak testing, and production batch testing and sampling requirements.

These topics ensure TPRDs reliably activate under thermal exposure (e.g., fire) and provide predictable venting characteristics for compressed hydrogen vehicle containers.

Applications and users

Who uses ISO 19882:2025:

• Pressure relief device manufacturers designing thermally activated PRDs for hydrogen vehicles.
• Hydrogen fuel container and vehicle OEMs integrating TPRDs into compressed hydrogen storage systems for fuel cell and internal combustion vehicles.
• Test labs and certification bodies conducting design qualification and production testing to demonstrate compliance.
• Regulatory and safety engineers assessing component safety and system-level risk for hydrogen vehicle applications.

Practical applications include component design validation, supplier quality control, type approval testing, and conformity assessment for hydrogen passenger cars, buses, trucks, and material‑handling equipment.

Related standards

• ISO 14687 (hydrogen fuel quality)
• ISO 19881; IEC 62282-4-101; CSA/ANSI HGV 2; EC79/EU406; SAE J2579; UN ECE R134; UN GTR No. 13 - listed in the scope as related hydrogen vehicle and container standards referenced for applicability and system compliance.

Keywords: ISO 19882:2025, thermally activated pressure relief devices, TPRD, gaseous hydrogen, compressed hydrogen vehicle fuel containers, hydrogen vehicle safety, pressure relief device testing.