Test of hydrogen storage cavern at Gasunie's Hystock site

Technicians prepare a gas-sealing test above an underground cavern at a hydrogen energy project inside Gasunie's HyStock site in Veendam, the Netherlands. The underground cavern, formerly used to store natural gas, will now be used to house hydrogen. Each cavern is around 300 - 400 metres high and 50 - 80 metres wide, big enough to contain the Eiffel Tower. Since hydrogen molecule is much smaller than that of natural gas, engineers have to apply additional sealing to prevent leakage. The technicians are inserting a pipe to pump nitrogen, which is more inert than hydrogen, into the cavern for testing.

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Filename: Cavern_Gasunie_Netherlands-008-JIN07758-AL.jpg
Copyright: Justin Jin
Image Size: 3000x2001 / 1.4MB; EU European blue carbon-free cavern caverne cell colour documentary drill dutch emmission employment energy europe fuelcell gas gasunie green groningen hydrogen hystock jin justin justin jin leak leakage maintenance netherlands news pipe pipeline power renewable repair reportage storage string strings technician technicians technology test underground veendam water water fuel zero
Contained in galleries: Salt Dome H2 Cavern, Hydrogen - All, Hydrogen Valley

Technicians prepare a gas-sealing test above an underground cavern at a hydrogen energy project inside Gasunie's HyStock site in Veendam, the Netherlands. The underground cavern, formerly used to store natural gas, will now be used to house hydrogen. Each cavern is around 300 - 400 metres high and 50 - 80 metres wide, big enough to contain the Eiffel Tower. Since hydrogen molecule is much smaller than that of natural gas, engineers have to apply additional sealing to prevent leakage. The technicians are inserting a pipe to pump nitrogen, which is more inert than hydrogen, into the cavern for testing.