"I think that water injection to Unit 2 is not too much delay", March 17, Nuclear Safety and NISA Conference Summary at 20 o'clock

From around 20:30 on Mar 17th and past 22 o'clock,Nuclear and Industrial Safety AgencyThe meeting was held.

The content is a question and answer about the effect of the water drop done today and what kind of furnace at present is treated as a priority, whether it should be treated.

Details are as below.
NISA:
According to Togo staff director, the helicopter water injection is an emergency to the last. It is said that basically it should be done now and carried out.

Since there is a pump or electric moving thing, as soon as it moves it is now in the state of putting sea water directly from the ocean, but without doing that, do not move a big pump in a conventional way Also, I think it is a good thing to be able to do a variety of work.

Reporter:
Is it to allocate the resources that are currently taking up to where we must urgently turn? When power is supplied to Units 1 and 2 Where do you want to turn resources?

NISA:
In my understanding, first of all I will accomplish the part to be cooled with water which is done with the cooperation of the SDF and the police who are doing now. Since there are things that other organizations are asking for, it may not need a lot of people, but this is the first. It is also important to secure an external power supply, so it seems there is no choice to distribute this personnel elsewhere.

When the power supply recovers, the sea water pump is covered with sea water and it can not be used, so it must be repaired, but some of the seawater pumps may be usable, looking at facilities that can still be used in the facility. The facility also has a tank of pure water so it may be possible to make up. I will use what I can check and use. As for the resource, pool 3 of Unit 3 is possible in the form of water discharge because there is no ceiling. Once the power supply has recovered and the pipes and pumps inside are ready for use, it may be possible to supply water to the pool with the facilities of the facility. If you recover the power while discharging water, you may be able to supply water using the facility

Yomiuri Shimbun Hida:
Hopefully it was said that electricity can be secured from the outside by electricity transmission line today, but it will take about 10 hours, but why is it so optimistic? Unit 2 is about to connect to an external power supply, is it possible?

NISA:
There is no doubt that I did not explain how long it will take until the tie-in, so it may have been misunderstood. I intended to say that it may be possible to bring it inside the site today.

Supplying electric power from a (power) car to electric facilities inside a power plant is out of specification. Sometimes I tried using cables with connectors and it did not work as it was out of the standard. In the case of a transmission line, I think that there is no problem because it will be connected to the transmission line using the original equipment.

Reporter:
Then, it is said that we tried quite difficult things in the last time, but was there no description of such circumstances?

NISA:
If we can restore the point where the transmission line has run out, we will start over there, but we took the power car as it was quickest to bring in. On the other hand, as for the withdrawal from the transmission line, we had to turn around the detour route where the transmission line was broken and finally brought near the power station so we finally came to where we could connect to the facility .

Reporter:
I have heard that there is abnormality on the plant side, but is there no problem now?

NISA:
Especially, businesses have not heard of such things

Reporter:
Please let me check, the water discharge has ended after 20 o'clock and the measurement data is not entering (this statement is about 21:30)?

NISA:
I think that the final version of today's data is 18:40 and that the subsequent data has arrived here as well.

Reporter:
Can you check now?

NISA:
Let me check it for a moment.

Meanwhile, about the thing I promised to investigate earlier, the spent fuel pool capacity of Unit 3 is 9.9 m × 12.2 m × 11.3 m = 1365 cubic meters. It is 1365 tons if it is water. The height of the pool is 11.3 m.

Reporter:
Why was it impossible to drain water until now?

NISA:
I will check the place there again

Reporter:
For example, there is data as of 12 o'clock but there is not 4 am in the morning. What does this mean?

NISA:
For Units 1 to 3, we injected seawater by grabbing a fire engine and have a flowmeter attached so we can read the numerical values. I confirmed that water is being injected. Just because the dose is high, I regularly check it by patrol. It was a report of the fact that we had received reports until now that water was being injected, but now it came to be included as figures. Previously, it was only "Seawater infusion", but it is now where numbers are being reported. The numerical value is a measure of the amount of seawater that is put.

I will tell you about data on water discharge. 18: 40 is at the end of the material at hand, but there is data after every 10 minutes thereafter. It is 3638 liters at 18:50, 3630 liters at 19:00, 3626 liters at 19: 10, 3623 liters at 19:20, 3599 liters at 19: 50, 3601 liters at 20: 00, and 3586 liters at 20: 10 There is no big change in the numerical value.

Reporter:
Although it seems that it decreases somewhat depending on the time as a numerical value?

NISA:
I do not know if I write it in a graph, but I will check it.

Reporter:
As usual I can not say that as an evaluation, thank you.

Reporter:
Why does the external power supply connect to Unit 2 and the height of the pool capacity of Unit 3? Moreover, although it is confirmation of the number, again the numerical value in the sky at the beginning is again.

NISA:
The numerical value in the sky is 300 feet above the No. 1 to No. 4 aircraft (hourly) 87.7 mSv, 1000 ft (hourly) 4.13 mSv. This is the value at 10 o'clock on the 17th today. According to the value we measured yesterday, it is 100 m feet (hourly) 250 mSv.

The difficult part of Unit 2 is originally a good thing, but because there is still a roof, it is a place where you can not put water from above for Unit 2. Then there is a strong demand that it is necessary to revive the electric system and keep the temperature of the spent fuel pool.

Reporter:
How effective can you judge the effects of the SDF's watering and draining water by looking at the numbers? For example, will it take until tomorrow morning?

NISA:
Specifically, it can not be said only by us. Consult with stakeholders while watching data

Reporter:
Will the SDF's water discharge continue in the future?

NISA:
We have not got any information as to whether we can continue now.

Reporter:
I understood the external power supply of Unit 2, but what about other things?

NISA:
Units 1 and 2 are packaged in one package and are handled by TEPCO's power line transmission power which Tohoku Electric Power possesses. It remembers that there were three external power supplies for the third and fourth units and the other.

Reporter:
Is it possible to explain in a diagram how to connect with an external power supply

NISA:
I will think about whether I can do it.

Reporter:
It is said that the height of the pool at Unit 3 is 11.3 meters, but at which height is the fuel normally, and how much is the water level?

NISA:
Fuel is about 4 meters tall, usually water is 7 meters tall.

Reporter:
I think that there was a shared pool besides the spent fuel pool?

NISA:
Is that a shared pool? Although I explained that it is behind Unit 1, it is wrong and it is right behind Unit 4. There is a dedicated pool for each of 1 to 6, and each extracted fuel is put in a special pool. I will put it into the shared pool after that. I only have shared pools, which are quite cool, so I think it is the first thing to worry about the pool of Units 1-6.

Reporter:
Although it is said that Unit 2 can not spray water from the roof, after doing electricity construction tomorrow, can you make it even after that? In other words, how much is the risk?

NISA:
Initially I heard from TEPCO, the spent fuel pool of Unit 4 is the most worried part because it has the largest calorific value. I was thinking of injecting water into the pool of Unit 4 which is of concern ... ... Unfortunately, I am sorry. When I look at photos from Unit 2, I think that there is not much delay as white smoke comes out. We have to secure the water level here as well. As I mentioned earlier, because there is a roof, we plan to secure power to inject with existing facilities.

Reporter:
Do you have plenty of tomorrow?

NISA:
as soon as possible. That's what everyone's thinking is about. It is about 10 hours or so, but I want you to do it as soon as possible.

Reporter:
Although it may be difficult to answer, the flow of information is becoming strange due to the establishment of the integrated headquarters of the government office and TEPCO. I wonder if there is a time lag due to information coming from TEPCO after going to the official residence.

NISA:
We also made a division in the TEPCO headquarters and we take care of the information and handle it throughout NISA and input through it to deal with it. The Integrated Headquarters is effective for making related decisions.

Asahi Newspaper:
Before and after the Integrated Headquarters, did the information provision became sooner for the latter?

NISA:
As we will have to evaluate the results from now on, but there is something like the SDF and the riot police coming also, and if we say that we will borrow the power of the official residence, we need a place like that and it worked I do not think so. We had a system to talk with local people, so we will make good use of such a good function. Because difficult situation will continue in the future, it is difficult only with some government agencies and companies, so it is an idea to make something.

Reporter:
When did you check smoke? Is it also coming from Unit 1

NISA:
I saw a photograph of the sea side with a satellite photograph and understood understanding that there was a hole on the sea side of Unit 2. As Unit 2 also sounded loud once and the pressure dropped, that kind of thing might be involved.

Reporter:
Do you understand that there is no smoke from Unit 1

NISA:
I guess it was as long as I saw it.

Reporter:
Although the story changes, what is the situation of the people who are doing their best in the field? What is the amount of meals and sleeping time?

NISA:
I will investigate it because I do not have some insight. I heard that the number of people is slightly 300 people throughout the premises.

Reporter:
We are dealing with SDF helicopters, special vehicles, fire trucks, but are not we grasping which plans to use fire extinguishing vehicles such as industrial fire?

NISA:
As a guess it may have thought through that process but I do not grasp it. I feel like I heard it early, but I am not sure.

Reporter:
Although it is said that the containment vessel is about one tenth of the atmospheric pressure, since the containment vessel may be cracked or the like, some containers may be damaged by No. 1 to No. 4 in pressure or cooling work Is not the situation considered?

NISA:
Now I think that it does not seem like data clearly happening. As I reported before, the doubt that something has happened is not sunny so the possibility can not be erased. It seems that there is no obviously damaged thing in monitoring data as it is here.

Reporter:
There are water injection and sprinkling to Unit 3, but what about Unit 4?

NISA:
Unit 4 has a large amount of spent fuel and we have to pay it, but there are operations like Units 3 and 4 respectively. I do not recognize the latest place, but I'd like to respond quickly.

Reporter:
With the emphasis on Unit 3, does that mean that we have to think about Unit 4 and do not change?

NISA:
Yes, it is

Reporter:
The priority of external electricity is said to be Mr. TOKYO's intention, but why is it detailed?

NISA:
I will also check about your question point.

Reporter:
It is related to the fact that white smoke is raised from Unit 2 before, but first of all, does supposing that white smoke is confirmed for suppression pool (pressure suppression room) does it mean damage?

NISA:
Since there is no confirmation there is still a possibility stage. I think so.

Reporter:
So, where does the white smoke come from?

NISA:
If so, it will be from the spent fuel pool.

Reporter:
Does that mean that there is white smoke from the used pool on Unit 2 too? Is not it from the suppression pool?

NISA:
The possibility is high if the used pool is more white smoke than the suppression pool.

Reporter:
When do you check white smoke?

NISA:
I will check whether it still exists

Reporter:
When are satellite pictures?

NISA:
Although TEPCO brought pictures of Units 3 and 4, although it was certainly received immediately after the press explanation ... ... After receiving an image of the satellite from the mass media a while ago, in the photograph of the land side from TEPCO It was a picture I saw from the sea side, but it felt like I was out according to it. I will check if it is out now.

Reporter:
It is said that the temperature rises 4 to 5 degrees per day of fuel, but is it possible to calculate and assume the temperature rise of the pool?

NISA:
I think that we can do it to a certain extent. Although there is a degree of accuracy.

Reporter:
Would you please publish the theoretically available temperature as a material?

Reporter:
Consider.

Reporter:
In relation to that, I do not know the definition because it is a new fuel in the material, but for Unit 4 all are in the used pool, but was there new fuel there?

NISA:
It was originally there. Let me check it for a moment.

Reporter:
What is new fuel and how is it handled?

NISA:
Since the new fuel has a reservoir dedicated to the new fuel and sometimes it can be stored in the used pool once, depending on the timing, new fuel may be contained in the used pool, Sometimes it is in. Perhaps this way of writing is done, so I think that it is the new fuel that is in the pool, but please let me check it. The new fuel is not generating fever. Because it is the fuel before nuclear fission. It is in the state of uranium.

Nico Nico Video Nanao:
The photo image is open to the public, but is not the movie taken? Will not you shoot videos and ask for information?

NISA:
I have not seen much. We do not discuss anything with animation at NISA.

Reporter:
I think the situation will gradually become more severe, but how do you think about the future?

NISA:
Regarding what kind of difficulties existed, I think that there were problems with the dose and time constraints of the staff who will be caused by it, but I still have information on what kind of problems were overall as a whole Absent.

After doing this evaluation, there will also be adjustments with those who can do, so I will do it earlier from tonight or tomorrow.

Reporter:
What's next?

NISA:
I will think carefully from now on.

Reporter:
Although the talk is slightly separated, Kitazawa Defense Minister judged that today is the limit and seems to have decided to discharge water in the helicopter, was there such recognition as NISA? Have you explained that it is a pressing situation to the Ministry of Defense?

NISA:
Well, first of all, there is no doubt as an overall schedule feeling. Since there are many places where used smoke goes up in used pools, the earlier you get, the better. Fuel is definitely what you want in the water, so it's okay to say that it is a limit on a daily basis, and we have to manage days. However, there are also trade-offs with those who are willing to do so by paying the cost and having a hard feeling. The Minister of Defense may have said that after considering it.

Reporter:
Did something serious happen?

NISA:
No. I wonder if it will become harder as one day passes.

Reporter:
In that sense, is it likely to be beyond the mountain today?

NISA:
As I mentioned from the beginning, it is uncertain whether I can do such evaluation.

Reporter:
I mentioned that this is not a direct radiation value but a factor that affects Fukushima, about the high numerical value of 250 mSv per hour (hourly) in the sky above 100 feet, but the meaning of the numerical value and the evaluation please teach me.

NISA:
I think that is the case. A review of the amount of horizontal expansion of the surroundings with this value does not lead directly. To put it on top is that radioactive substances are not likely to lie sideways or not to directly link, so we have to think about data while looking at them.

Reporter:
Can you tell me about the content of opinion exchange

NISA:
What is going on right now and what kind of data and how are you looking at it? If you think that it is such a thing apart from whether or not it will be kept secret more than that. I can not tell you whether it will take minutes.