Hydroen Train: What Exactly Is Hydrogen, and Why Does It Worry People? How Is Safety Actually Ensured?
Indian Railways is set to flag off India's first Hydrogen Train that generates its own electricity onboard using hydrogen, the cleanest fuel known.
What is Hydrogen? In simple terms, hydrogen is colourless, so you cannot see it, and odourless, so you cannot smell it. It is also tasteless. It is non toxic, meaning it will not poison you if you are near it. The part that makes people nervous, and rightly so, is that it is highly inflammable and needs to be handled with real care.
A question comes in everyone's mind: is it safe to put thousands of passengers on a train running on a gas that can catch fire so easily? Here is a simple explanation of how the train works, and everything Indian Railways has done to make it safe.
Because hydrogen cannot be seen or smelled, the entire safety design of this project is built around one goal, which is to detect even the smallest leak instantly and never let it turn into a danger.
So How Is Safety Actually Ensured?
Safety has been built into every layer of the project. From the design of the train and hydrogen storage cylinders to refuelling infrastructure, monitoring software and emergency response systems. Rather than depending on a single protective measure, Indian Railways has adopted the internationally accepted principle of defence in depth, where multiple independent safety systems continuously monitor, verify and protect every stage of hydrogen storage, transfer and utilisation.
Detection happens everywhere. The train and the plant are fitted with devices that continuously watch for hydrogen leaks, unusual heat, flames, or smoke, so any problem is caught within seconds. On top of this, non-stop ventilation keeps air moving through the train at all times, so that even if a tiny amount of hydrogen were to leak, it gets safely carried away and diluted in the open air instead of collecting anywhere.
Automatic shut off system
There is also an automatic shut off system. If anything unusual is detected, the system can automatically cut off the hydrogen supply on its own, without waiting for a person to react. Loco Pilot safety has been given particular attention too. The Loco Pilot’s cabin has been specifically designed to keep him safe, with a special mode that allows the train to be moved to safety in an emergency, and a screen that shows the Loco Pilot the real health of the whole system at all times.
The Jind hydrogen plant itself has similar protections, including leak detectors, flame detectors, automatic shutdown systems, water sprays to control any fire, and fire alarms, all working together.
Checked and Approved, Not Just by Indian Railways
The hydrogen ecosystem has been designed in accordance with internationally accepted standards, including NFPA-2 and the ISO 19880 Series, while also complying with the statutory requirements of the Petroleum and Explosives Safety Organisation (PESO). Before commissioning, the entire system underwent an independent third-party safety assessment by TÜV SÜD, Germany, one of the world's leading technical inspection and certification agencies