"The vault managers are now taking precautions, including major work to waterproof the 100m-long tunnel into the mountain and digging trenches into the mountainside to channel meltwater and rain away. They have also removed electrical equipment from the tunnel that produced some heat and installed pumps in the vault itself in case of a future flood."
Sorry to ruin this for you, but it is already too late. We are already in the process of damage control.
"it's too late" is a dangerous statement because it suggests actions no longer matter. And if no action is taken, several climate models project >4 °C average warming. The majority of the planet will be become uninhabitable at the current human density levels, with billions of people having to relocate and/or die.
Like build dikes around low lying areas rather than trying to coordinate a worldwide slowdown of economic activity which faces the worst outcome of prisoner's dilemma.