Reactor 1 damaged, explosion immanent?

Tokyo Electric Power Company saying Reactor 1 showing signs of damaged reactor core. They believe hydrogen gas is building up inside. An explosion is immanent unless the hydrogen gas can be counteracted.

They plan on injecting nitrogen gas into the reactor core tomorrow morning.

So far TEPCo does not have a good track record with any of their attempts to control the damaged Fukushima Daiichi plant.