Tons of Contaminated Water Leaks at Fukushima Nuclear Plant

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<ul><li><p>7/28/2019 Tons of Contaminated Water Leaks at Fukushima Nuclear Plant</p><p> 1/3</p><p>Register Log In</p><p>Behind the NewsBehind the News EconomyEconomy Cool JapanCool Japan ViewsViews AsiaAsia SportsSports 3/11 Disaster in Japan3/11 Disaster in Japan GLOBEGLOBE SpecialSpecial ForumForum TravelTravel What's NewWhat's New</p><p>Fukushima nuclear crisisFukushima nuclear crisis Life and DeathLife and Death Quake and TsunamiQuake and Tsunami RecoveryRecovery AnalysisAnalysis OpinionOpinion</p><p>120 tons of contaminated water leaks atFukushima nuclear plant</p><p>Prev ious Article</p><p>Anti-rat work caused latestcooling system problem atFukushima nuclear plant</p><p>Next Article</p><p>Fishermen alarmed by waterleak at nuclear plant</p><p>Fukushima No. 1 nuclear powe r plant</p><p>language</p><p>Tweet 41 Recommend 64 8</p><p>April 06, 2013</p><p>About 120 tons of contaminated water has leaked from an undergroundstorage tank at the Fukushima No. 1 nuclear plant and may have mixed</p><p>with underground water, Tokyo Electric Power Co. said April 6.</p><p>TEPCO estimated that the water contained about 710 billion becquerels ofradioactivity and leaked through the joints of protective sheets of thestorage tank.</p><p>The water had passed through a filtration system before leaking, and itsradioactivity level was about half that of water that has yet to be filtered,according to TEPCO.</p><p>TEPCO acknowledged that the contaminated water likely soaked the soilsurrounding the tank and may have reached underground water.</p><p>But "the contaminated water has not seeped into the sea, TEPCOspokesman Masayuki Ono said at a news conference before dawn on April6. Ono noted that the storage tank is located 800 meters from the PacificOcean.</p><p>About 13,000 tons of contaminated cooling water was put into the tankfrom Feb. 1 to March 2, filling it to capacity.</p><p>Workers began to transfer contaminated water from the leakyunderground storage tank to a different tank early on April 6. It takesabout an hour totransfer about 100 tons of water, meaning five days ormore are required to complete the task.</p><p>The water had initially been used to cool melted nuclear fuel after theonset of the Fukushima nuclear disaster in March 2011, and wassubsequently put into the storage tank.</p><p>TEPCO has been removing cesium from the water with filtrationequipment. However, water that goes through the filtration process and isstored in the underground storage tank is still highly contaminated</p><p>because it contains other radioactive materials, such as strontium. Theradioactivity level of the water is about 290,000 becquerels per cubiccentimeter.</p><p>TEPCO became aware of the leak after measuring the height of the waterin the tank on April 4 and 5.</p><p>The underground storage tank is 60 meters long, 53 meters wide and 6meters deep. It is lined with three layers of protective sheets--two made ofpolyethylene and the outermost layer of clay--to prevent leakage.</p><p>TEPCO had been checking for possible leaks by measuring radioactivitylevels of water from a hole dug near the tank. Until last month, however,the radioactivity level of the water had been so low that it was impossibleto detect any leakage.</p><p>But on April 3, 20 becquerels of radioactivity per cubic centimeter wasdetected, followed by 35 becquerels the next day.</p><p>At 3 p.m. on April 5, workers took water from an area between the claylayer and a polyethylene layer. At 10 p.m. they found that theradioactivity level of the water was about 6,000 becquerels.</p><p>TEPCO suspects that joints in the sheets of the polyethylene layer hadruptured and the water then managed to leak through the 6.4-millimeter-</p><p>By SHUNSUKE KIMURA/ Staff Writer</p><p>TEPCO spokesman Masayuki Ono tells reporters on April 6 in Tokyo how</p><p>contaminated water leaked from a storage tank at the Fukushima No. 1 nuclear</p><p>plant. (Hikaru Uchida)</p><p>Map Satellite</p><p>Map data 2013 Google, ZENRIN - Terms of Use</p><p>converted by</p>!/ajwasahi</li><li><p>7/28/2019 Tons of Contaminated Water Leaks at Fukushima Nuclear Plant</p><p> 2/3</p><p>More AJW</p><p>Facebook Twitter</p><p>iPhone/iPad</p><p>Tweet 23 Recommend 15 3</p><p>TEPCO floundering in dealing with sea ofcontaminated waterApril 07, 2013</p><p>The recent leaking of radioactiv e water from a storage</p><p>tank at the Fukushima No. 1 nuclear plant--and the</p><p>suspected leak from a second tank--illustrate the plantoperators challenge in safely disposing of increasing amounts of</p><p>contaminated water, with no effective solution in sight.</p><p>Tweet 15 Recommend 24 2</p><p>Fishermen alarmed by water leak atnuclear plantApril 07, 2013</p><p>News of the leak of contaminated water from a storage</p><p>tank at the Fukushima No. 1 nuclear power plant is the</p><p>latest blow to local fishermen who had hoped to restart</p><p>their livelihoods.</p><p>Tweet 14 Recommend 6 2</p><p>Anti-rat work caused latest cooling systemproblem at Fukushima nuclear plantApril 06, 201 3</p><p>Work to prevent rodents from causing another blackout at</p><p>the stricken Fukushima No. 1 nuclear plant accidentally</p><p>shut down the cooling system for a spent fuel storage pool</p><p>on April 5, the plant's operator said.</p><p>Tweet 20 Recommend 87 2</p><p>Fukushima nuclear plant's cooling system</p><p>goes offline for 3 hoursApril 05, 2013The cooling system for a fuel storage pool for one of the</p><p>reactors at the crippled Fukushima No. 1 nuclear power</p><p>plant in Japan temporarily failed on April 5 for the second</p><p>time in a month.</p><p>Tweet 10 Recommend 6 2</p><p>TEPCO makes room to store spent nuclearfuel from damaged Fukushima reactor</p><p>buildingApril 05, 2013</p><p>Workers at Tokyo Electric Power Co. removed spent</p><p>nuclear fuel housed in a common storage pool at theFukushima power plant and moved it to a temporary storage depot on the</p><p>plant site, TEPCO said April 4.</p><p>Related Articles</p><p>By SHUNSUKE KIMURA/ S taffWriter</p><p>thick clay layer.</p><p>TEPCO Fukushima No. 1 nuclear power plant contaminated water</p><p>leakage</p><p>1</p><p>Tweet 41 Recommend 64</p><p>8 ShareShare</p><p>Facebook social plugin</p><p>Add a comment. ..</p><p>converted by</p>!/ajwasahi</li><li><p>7/28/2019 Tons of Contaminated Water Leaks at Fukushima Nuclear Plant</p><p> 3/3</p><p>Previous Article</p><p>Anti-rat work caused latest cooling system problem at Fukushimanuclear plant</p><p>Next Article</p><p>Fishermen alarmed by water leak at nuclear plant</p><p>About Us Terms of Use Privacy policy Copyright FAQ Inquiry</p><p>Copyright The Asahi Shimbun Company . 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