【東京電力からのご連絡】福島第一原子力発電所1?3号機原子炉注水系における原子炉施設保安規定で定める「運転上の制限」の逸脱について(続報2)?

※※流量低下の原因はポンプ内の空気混入では無かった、ということ、
そして、1,3号機ではまだ低下傾向ということです。


(保安院からのメール、0:55)

 

────────────────────────────────────
             東京電力からのご連絡
────────────────────────────────────

報道関係各位

 本メールは、事前に「深夜・早朝における連絡先」の登録のお申し込みをいた
だいた方にお知らせしています。

○常用高台炉注水ポンプ(A)(B)(C)のうち、流量低下事象発生当時は(B)
 (C)で稼働しておりましたが、ポンプ内への空気の混入の有無を確認するため、
 (A)を午後11時8分に起動し、(B)を午後11時10分に停止しました。停止し
 た(B)についてはエアベント操作を行いましたが、ポンプ内への空気の混入に
 ついてはないことを確認しました。

○同様に、常用高台炉注水ポンプ(C)についても、ポンプ内への空気の混入の有
 無を確認するため、(B)を午後11時30分に起動し、(C)を午後11時31分に停
 止しました。停止した(C)についてはエアベント操作を行いましたが、ポンプ
 内への空気の混入についてはないことを確認しました。

○以上により、常用高台炉注水ポンプ(B)(C)については、空気の混入がないこ
 とを確認しました。引き続き原因について、調査してまいります。

○なお、ポンプ切り換え後の注水量について、1、3号機で低下傾向が見られるた
 め、以下の通り注水量の調整を午後11時53分から8月31日午前0時9分にかけて
 行いました。

 ・1号機:4.2m3/hから5.0m3/hに調整(必要注水量4.3m3/h)
 ・2号機:7.0m3/hで調整なし(必要注水量6.1m3/h)
 ・3号機:6.7m3/hから7.0m3/hに調整(必要注水量6.1m3/h)

【以下、お知らせ済み】

○1号機、2号機、3号機の原子炉注水量の低下(運転上の制限からの逸脱)につ
 いてですが、その後の状況についてお知らせします。会見にて必要注水量を確保
 した旨お知らせしましたが、その後注水量が安定せず低下したことから、午後9
 時56分から午後10時30分にかけて、以下のように原子炉注水量の調整を行いまし
 た。

 ・1号機:3.8m3/hから5.0m3/hに調整(必要注水量4.3m3/h)
 ・2号機:5.8m3/hから7.0m3/hに調整(必要注水量6.1m3/h)
 ・3号機:5.0m3/hから6.7m3/hに調整(必要注水量6.1m3/h)

○午後10時における各号機の原子炉圧力容器下部の温度は以下の通りで、変化は見
 られませんでした。また、他のプラントパラメータにも有意な変動は確認されて
 おりません。

・1号機:37.5℃(午後3時)37.5℃(午後4時)37.5℃(午後10時)
・2号機:54.9℃(午後3時)54.9℃(午後4時)54.8℃(午後10時)
・3号機:55.9℃(午後3時)55.9℃(午後4時)56.0℃(午後10時)

○今後、常用高台炉注水ポンプ(A)(B)(C)のうち、現在稼働中の(B)(C)
 による注水について、(A)(C)による注水へ切り換えを行い、注水量の変化に
 ついて確認するとともに、停止した(B)についてはポンプ内への空気の混入の有無
 について確認するため、エアベント操作を行う予定です。


【以下、お知らせ済】

○本日(8月30日)午後3時の定例のデータ確認において、福島第一原子力発電所
 1?3号機原子炉注水系において、以下のとおり注水量が低下していることを当
 社社員が確認しました。

 ・1号機:必要注水量4.3m3/hに対して注水量4.9m3/h(午後2時時点)から4.0m3/hに低下
 ・2号機:必要注水量6.1m3/hに対して注水量7.0m3/h(午後2時時点)から5.5m3/hに低下
 ・3号機:必要注水量6.1m3/hに対して注水量7.0m3/h(午後2時時点)から5.6m3/hに低下

○このため、各号機について原子炉施設保安規定第138条*1に定める運転上の
 制限*2である「原子炉の冷却に必要な注水量が確保されていること」を満足で
 きないと当直長が判断しました。

(判断日時)
 ・1号機:平成24年8月30日午後3時7分
 ・2号機:平成24年8月30日午後3時0分
 ・3号機:平成24年8月30日午後3時5分

○なお、発電所内のモニタリングポストには有意な変動は確認されておりません。

○現場確認の上、午後3時48分より注水量の増加操作を開始し、以下のとおり、注
 水量を調整し、午後4時30分時点では各号機とも必要注水量が確保されているこ
 とを確認いたしました。

(午後4時30分時点原子炉注水量)
 ・1号機:5.0m3/h
 ・2号機:7.0m3/h
 ・3号機:6.6m3/h

○今後も引き続き、冷温停止状態の維持、プラントの安全確保に万全を期してまい
 ります。

○本メールには返信できませんのでご了承ください。

以 上

*1 原子炉施設保安規定
  核原料物質、核燃料物質及び原子炉の規制に関する法律第37条第1項の規定に
 基づき、原子炉設置者による原子力発電所の安全運転及び安定状態の維持にあた
 って遵守すべき基本的事項(運転管理・燃料管理・放射線管理・緊急時の処置・
 「中期的安全確保の考え方」に基づく設備の管理など)を定めたもので、国の認
 可をうけている。


*2 運転上の制限
  原子炉施設保安規定では、原子炉の運転に関する多重の安全機能の確保及び原
 子力発電所の安定状態の維持のために必要な動作可能機器等の台数や遵守すべき
 温度・圧力などの制限が定められており、これを運転上の制限という。保安規定
 に定められている機器等に不具合が生じ、一時的に運転上の制限を満足しない状
 態が発生した場合は、要求される措置に基づき対応することになっている。



 


トラックバック(0)

トラックバックURL: http://daily.magazine9.jp/mt/mt-tb.cgi/880

コメント(284)

How lifeless may be the Romney campaign?

The Pioneer Village, in Minden, Nebraska has among these. It is actually red also. It really is roped off, however you will get arms length to it. Harold Warp, of Flex-O-Glass fame and founder of your museum, bought it from a John Schaff of Flint, Michigan, Usa in 1957. It's in remarkable condition and I believe it really is original also. You'll find several other excellent outdated Fords there as effectively. Really, there is lots of wonderful previous machinery out there. Cars, trucks, tractors, motorcycles, boat motors, airplanes, you identify it. Nicely worth the stop if you're while in the area.

Hello! This is my first visit to your blog! We are a group of volunteers and starting a new initiative in a community in the same niche. Your blog provided us beneficial information to work on. You have done a extraordinary job!

Wow that was strange. I just wrote an very long comment but after I clicked submit my comment didn't show up. Grrrr... well I'm not writing all that over again. Anyways, just wanted to say wonderful blog!

Along with almost everything which appears to be developing inside this particular subject matter, your points of view happen to be rather exciting. Nonetheless, I beg your pardon, but I can not subscribe to your entire theory, all be it refreshing none the less. It appears to us that your opinions are generally not entirely validated and in reality you are generally yourself not even thoroughly confident of the argument. In any case I did take pleasure in reading through it.

With havin so much written content do you ever run into any issues of plagorism or copyright infringement? My website has a lot of exclusive content I've either created myself or outsourced but it seems a lot of it is popping it up all over the web without my permission. Do you know any techniques to help protect against content from being ripped off? I'd truly appreciate it.

What's up, is it rite to only study from publications not to pay a visit internet for most up-to-date updates, what you say guys?

Wow that was unusual. I just wrote an really long comment but after I clicked submit my comment didn't appear. Grrrr... well I'm not writing all that over again. Anyhow, just wanted to say wonderful blog!

This is a excellent web site, could you be involved in doing an interview regarding how you designed it? If so e-mail me!

mothoExcellent data is usually uncovered on this internet blog.

My partner and I stumbled over here from a different page and thought I should check things out. I like what I see so now i'm following you. Look forward to checking out your web page yet again.

Howdy just wanted to give you a quick heads up. The text in your post seem to be running off the screen in Opera. I'm not sure if this is a formatting issue or something to do with browser compatibility but I thought I'd post to let you know. The layout look great though! Hope you get the problem resolved soon. Many thanks

I think that is one of the so much vital info for me. And i am glad reading your article. However want to statement on few normal things, The web site taste is great, the articles is truly great :D. Just right task, cheers.

Most states and communities don't require them to be in shape to ride to work on clear days if you want to do your bit for the next 2 to 3 years. In your bike's battery to any outlet and get it recharged anywhere you are.

With havin so much content and articles do you ever run into any problems of plagorism or copyright violation? My blog has a lot of exclusive content I've either written myself or outsourced but it looks like a lot of it is popping it up all over the internet without my agreement. Do you know any techniques to help stop content from being ripped off? I'd definitely appreciate it.

Wow that was strange. I just wrote an really long comment but after I clicked submit my comment didn't appear. Grrrr... well I'm not writing all that over again. Anyhow, just wanted to say great blog!

Hi colleagues, you are sharing your view on the topic of weblog Search engine marketing, I am also new user of web, thus I am also getting more from it. Thanks to the whole thing.

Together with everything that seems to be developing within this area, your viewpoints are actually very refreshing. Having said that, I appologize, because I do not give credence to your whole idea, all be it refreshing none the less. It looks to everybody that your opinions are not totally rationalized and in simple fact you are generally yourself not really totally confident of your argument. In any event I did appreciate looking at it.

The lender would require assurance that the bank and type of business. This can be easily avoided. This type of funding may say that the business assets. The annual interest rate and higher personal loan fees.

This design is steller! You definitely know how to keep a reader amused. Between your wit and your videos, I was almost moved to start my own blog (well, almost...HaHa!) Fantastic job. I really enjoyed what you had to say, and more than that, how you presented it. Too cool!

Hmm is anyone else experiencing problems with the images on this blog loading? I'm trying to figure out if its a problem on my end or if it's the blog. Any feed-back would be greatly appreciated.

I concur! completely with what you were discussing. Great read... Keep going, guys..

I agree completely with what you were discussing. Good stuff. Keep going, guys..

Obviously high resolution videotape quality carries much memory, that’s why it gives enhanced quality.

Great Site , guys! Great Articles aswell. I bookmarked your site

My spouse and I stumbled over here different page and thought I should check things out. I like what I see so now i am following you. Look forward to looking into your web page repeatedly.

Wonderful website, due to your ex i always learned from the university within an hour or so! However , seeking information concerning the Internet is way better versus the guides for the subject matter.

If you don’t like this, contact your representative. While these fees may seem significant, when compared to the borrower. Must find out how long you've had your present job, and determine your prospects for continued employment.

Heya i'm for the primary time here. I came across this board and I find It really helpful & it helped me out a lot. I'm hoping to give one thing again and aid others such as you aided me.

Hey! Do you know if they make any plugins to assist with SEO? I'm trying to get my blog to rank for some targeted keywords but I'm not seeing very good success. If you know of any please share. Thank you!

When I originally commented I clicked the "Notify me when new comments are added" checkbox and now each time a comment is added I get three e-mails with the same comment. Is there any way you can remove people from that service? Many thanks!

Today, while I was at work, my sister stole my iPad and tested to see if it can survive a thirty foot drop, just so she can be a youtube sensation. My iPad is now destroyed and she has 83 views. I know this is totally off topic but I had to share it with someone!

It's a shame you don't have a donate button! I'd certainly donate to this excellent blog! I guess for now i'll settle for book-marking and adding your RSS feed to my Google account. I look forward to fresh updates and will share this website with my Facebook group. Chat soon!

job search efforts often start in-house with current volunteers. Whether an application on plain paper, or a covering letter with a link to click on. This process assists companies in determining whether labor supply for specific job categories.

Hello would you mind letting me know which web host you're working with? I've loaded your blog in 3 different internet browsers and I must say this blog loads a lot quicker then most. Can you suggest a good internet hosting provider at a honest price? Kudos, I appreciate it!

Hello would you mind sharing which blog platform you're working with? I'm going to start my own blog soon but I'm having a difficult time selecting between BlogEngine/Wordpress/B2evolution and Drupal. The reason I ask is because your design and style seems different then most blogs and I'm looking for something unique. P.S Apologies for getting off-topic but I had to ask!

Hello! I'm at work browsing your blog from my new iphone 4! Just wanted to say I love reading your blog and look forward to all your posts! Keep up the superb work!

Great weblog right here! Also your site lots up very fast! What web host are you the use of? Can I am getting your associate hyperlink on your host? I wish my web site loaded up as fast as yours lol

Perform the suitable groundwork for rental qualities. For those who have the eyes with a hire property, check to see what has occurred to it in the last a couple of years prior to agree to getting it. Buying property in UK This will provide you with a correct data processing from the property's earnings flow. Moreover, you need these documents to show which a leasing property has generated income in past times just before you may get a house loan around the house.

I want reading and I think this website got some genuinely utilitarian stuff on it! .

Right now it appears like Movable Type is the best blogging platform out there right now. (from what I've read) Is that what you are using on your blog?

Hey there! This is my first comment here so I just wanted to give a quick shout out and tell you I genuinely enjoy reading your articles. Can you recommend any other blogs/websites/forums that deal with the same subjects? Thank you so much!

The other day, while I was at work, my sister stole my iPad and tested to see if it can survive a 30 foot drop, just so she can be a youtube sensation. My iPad is now destroyed and she has 83 views. I know this is completely off topic but I had to share it with someone!

I be obliged to announce, as a great deal as I enjoyed reading what you had to declare, I couldnt avoid excluding go under pastime after a although. Its as condition you had a fantastic grasp proceeding the subject affair, but you forgot to contain your us your readers. Conceivably you should ponder concerning this from far more than one viewpoint. Before perhaps you shouldnt simplify hence considerably. Its better qualification you imagine regarding what others may have to utter instead of immediately going for a gut retort to the subject. Ponder concerning adjusting your identifiable belief process and generous others who may interpret this the benefit of the doubt.

I know this if off topic but I'm looking into starting my own blog and was curious what all is required to get setup? I'm assuming having a blog like yours would cost a pretty penny? I'm not very web smart so I'm not 100% positive. Any recommendations or advice would be greatly appreciated. Thanks

Your means of describing the whole thing in this paragraph is actually pleasant, every one be able to without difficulty know it, Thanks a lot.

Spot on with this write-up, I honestly think this amazing site needs a great deal more attention. I'll probably be returning to see more, thanks for the advice!

Attractive section of content. I just stumbled upon your blog and in accession capital to assert that I acquire actually enjoyed account your blog posts. Any way I’ll be subscribing to your augment and even I achievement you access consistently rapidly.

Hey there! This is my first visit to your blog! We are a collection of volunteers and starting a new initiative in a community in the same niche. Your blog provided us valuable information to work on. You have done a extraordinary job!

Terrific article! This is the kind of info that are supposed to be shared across the net. Disgrace on Google for no longer positioning this post upper! Come on over and talk over with my site . Thanks =)

最近のコメント