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00:00Transport services in Japan are resuming after disruption caused by a powerful earthquake off Fukushima. The magnitude seven point four quake triggered tsunamis by the warnings have now been downgraded. Yet Rosalind Chin has been following this story for us. I mean no major damage or injuries that have been reported so far. So no major damage. Transportation Services which had been affected are starting to resume again. Q They're reporting that Sendai airport reopened. That's after the tsunami warnings were downgraded to advisory. We're seeing also that the Japan railway East some of the routes are coming back on line as well although there probably will be delays a few of the routes and earlier today and also Japan Airlines had reported some flights were cancelled affecting a few thousand travellers and slowly throughout the day. That should ease . But sir five people were reported to have been injured and that's mostly in the northeast of Japan which is that area so the brunt of the quake. So the seven point four magnitude quake which did hit off the coast of Fukushima this morning did trigger though. Now we're seeing the calm afterwards have to remember the time that triggered the most severe sea Nami warning since the 2011 quake. And in that disaster we saw 18000 people die. So people are very conscious of what could happen in a quake and tsunami and in the end though we saw that there was a one metre tsunami recorded off the coast of the case of Maggie and a smaller waves elsewhere. This time around. But you know the broadcaster NHK has been reporting the weather agency has warned of aftershocks of a similar size to today's quake could occur over the next week and also trigger other tsunamis. Remembering back to not that long ago history in 2011 where there was a similar sized quake right just before the big one. Exactly. That's a huge shock isn't it because I was there in Japan for the 2011 one and to me it's just surprising to see that this was actually an aftershock of the magnitude 9 quake of back in 2011 and back then of course a big issue was nuclear power plants. What happens to them only two right now in operation since then. So any news on that front. So any to an operation out of the more than 40 that Japan has. But of course there's still concerns about the spent fuel which may be actually power plants which are no longer actually generating power. So there was a little bit of concern about the Fukushima Daiichi plant where a cooling system for one of the units was knocked off line temporarily but that was an automatic response to the quake. Well that came back on line again less than two hours later so there were there have been reporting updates on that situation that the Chief Cabinet Secretary of Japan she got Yoshihiro Asuka says they're investigating the reason for this to have happened. He also said that Japan has the world's strictest nuclear safety rules and they continue to assess the damage from the quake. But he did say that the stoppage of the system would not immediately have led to the release of radiation from that unit straight away. And a spokesman for the Nuclear Regulation Authority said that the power would need to be cut for about a week in order for the temperatures to reach the upper maximum level. So a short cut in the cooling unit there perhaps maybe something that they can deal with but still they have to look into why that happened. Yes this place I mean yes that's that's about to be ongoing right now. All right . Yeah on high alert certainly given the experiences of fairly recent past there. Rose chin for us .

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No Major Damage From Japan Quake

A magnitude 7.3 earthquake struck Japan off the coast of Fukushima, home to the nuclear power plant badly damaged in the March 2011 triple disaster, triggering a tsunami and briefly knocking offline a cooling system for spent nuclear fuel. Bloomberg's Rosalind Chin has the latest developments on "Asia Edge." (Source: Bloomberg)

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