This entry refer to a series of events occurred before the date given, which corresponds to the publication of the evidences at the Int. Conference on Hydrogen Safety 2015. The nozzle/receptacle connection froze when refuelling the on-board hydrogen storage system at the lowest precooling temperature of -40 C. However, freezing did not cause apparatus damage nor hydrogen leakage. The nozzle/receptacle is thus able to fuel safely even if the nozzle/receptacle is stuck due to ice.

At a refuelling station for buses, the first dispenser had been taken out of operation, becasue leaking (see HIAD event 403). Another dispenser was being used. Fuelling was taking too long and was very slow. The producer was called and it was found that the solenoid valves were not opening correctly due to a lack of compressed air.

One of the two dispensers at a refuelling station for buses shutdown at a refuelling station. The dispenser company were called and confirmed there was an issue with the dispenser. The station operator switched to the second dispenser. Fuelling was not interrupted.

During a filling at a hydrogen refuelling station, the station was shut down due to a gas detection. The leak was extremely small and difficult to locate but the gas was directed upwards towards the gas sensor which shut down the station. The safety equipment performed well as it should and safely shutdown the station. The tiny leak was located about 8 cm from the end fitting in the middle of the hose.Discovered during inspection.

A hydrogen leak was detected in the dispenser pump causing the alarm to sound.