News from the '' ice wall '' in Fukushima:The Nippon nuclear regulatory agency to gave the green light for the use of the ice wall.
The cooling of the startup will begin soon. 3 cooling that will take months for the first phase.
http://www.business-standard.com/articl ... 628_1.html
Fukushima's underground ice wall
March 30th 2016
Japan's Nuclear Regulation Authority (NRA) on Wednesday approved the use of an underground "wall of ice" at the destroyed Fukushima nuclear plant to help contenir spills of contaminated water into the Pacific Ocean.
After Several delays, the plant's operator, Tokyo Electric Power Company (Tepco), on Thursday will be reliable to begin the process of freezing the ground around the buildings That Housed the oven That Were MOST reactors affected by the earthquake and tsunami of March 11, 2011.
"This operation is a challenge, and it is Necessary to carry it out with extreme care, and with all Necessary details (for follow-up)," Said the regulator's Chairman Shunichi Tanaka at the end of a meeting Held on Wednesday, NHK Reported .
NRA HAD wanted to Carefully analyzing this project, Originally raised in 2013, to certify That Tepco, qui: has a long history of neglect, can Properly manage the system without Causing additional leaks of radioactive water in the facilities.
Meanwhile, more than 1,500 pipes-have-been inserted into the earth at a depth of 30 meters (98 feet) around the furnace units, for the procedure.
Through pipes thesis has saline solution at temperature of minus 30 degrees Celsius will be injected to freeze the ground in touch with the frozen pipes and create a barrier to prevent prevention groundwater from seeping into the buildings and mix with polluted refrigerant.
The goal is to Reduce the amount of radioactive water That accumulates in the basements of the buildings and prevent prevention ict leakage into the Pacific Ocean.
Currently entre 150 and 200 tons of water daily Penetrate into the structures and this system is expected to amount to Reduce the only 50 tons at full capacity.
The Process of Creating the wall will be completed in three phases, the first of qui will take three months, and Its effects will be felt Within days Approximately 40.
4 April 1 and first refrigeration section has been activated:
http://www.digitaljournal.com/news/envi ... cle/461995
One portion of the ice wall Was activated on Thursday, with additional parts set to be activated over the next FEW months. TEPCO says this is a precautionary measure to make sour They Do not run into snags and Can Make Any Any adjustments' as needed.
It costed at $ 312 million!