Hydrogen Cylinder Safety Upgraded: Highlights from the 2025 Gas Cylinder Rules Amendment

Introduction

In a landmark move to enhance gas handling safety, the Government of India has notified the Gas Cylinders (Third Amendment) Rules, 2025, introducing new safety and material compliance standards. This update, effective from July 28, 2025, amends key provisions of the Gas Cylinder Rules, 2016, especially focusing on hydrogen storage and usage. The amendments align Indian standards with international benchmarks like ISO and CGA, ensuring safer and more reliable gas storage systems across industries. Organizations dealing with hydrogen fuel systems must now adapt to the updated gas cylinder safety regulations to remain compliant and avoid penalties.

Key Highlights of the 2025 Amendment

1. Material Standards for Cylinders and Valves

One of the most critical changes involves stricter material requirements for gas cylinders, valves, and LPG regulators.

Now, materials must conform to IS/ISO 11114-1 and IS/ISO 11114-2 standards.
For other gases, materials must be suitable and approved by the Chief Controller.
This ensures that cylinders can withstand high pressures and corrosive elements.

Why it matters: Standardization boosts safety, reliability, and global compatibility—especially important for hydrogen, which is highly reactive.

2. Enhanced Valve and Container Compliance

To harmonize Indian regulations with international practices:

Containers must now conform to IS 18608 or ISO 21011 standards.
Valves must meet CGA V-1 specifications in addition to existing Indian approvals.

Impact: These steps significantly reduce leak risks and ensure valve integrity under operational stress.

3. New Test Protocols for Hydrogen Cylinders

Hydrogen-specific cylinders are now required to undergo rigorous testing:

ISO 17081 for measuring hydrogen permeation and absorption.
ISO 10587 for residual embrittlement testing.
ISO 16573 for evaluating hydrogen embrittlement resistance in steels.
ISO 15330 for detecting hydrogen embrittlement in fasteners.

Conclusion: These tests are critical to prevent failures in storage systems and promote safe hydrogen adoption.

4. Mandatory Compliance for Hydrogen Storage Systems

The roof structure of any hydrogen storage system must now adhere to the CGAPS-46 standard.

Result: This ensures better structural safety in industrial and transportation setups involving hydrogen.

5. Vehicle Fuel Systems Standardized

Any vehicle running on hydrogen must have its fuel system comply with:

ISO 21266-1 or ISO 21266-2; or
Any equivalent code approved by the Chief Controller.

Implication: A step forward in regulating hydrogen mobility, especially as India pushes towards a green hydrogen economy.

What Industries Should Do Next?

Audit existing cylinder stock for material conformity and international certification.
Upgrade hydrogen systems to meet CGAPS and ISO standards.
Train personnel on new testing and inspection requirements.
Collaborate with OEMs and suppliers to ensure newly procured cylinders and components are fully compliant.

Transitioning may require upfront investments, but it will mitigate risks, align with global supply chains, and promote safe hydrogen technology adoption.

Conclusion

The Gas Cylinders (Third Amendment) Rules, 2025 reflect India’s commitment to safety, modernization, and clean energy transition. These changes are especially vital as hydrogen becomes a cornerstone in decarbonizing sectors like transport and manufacturing. By embracing these upgrades, industries not only comply with the law but also champion safer, sustainable innovation.

Download: Gas Cylinder Safety Regulations Updated in 2025 Rules