Concerns expressed over $316m Fukushima ice wall

A top nuclear power official has expressed concerns about Tokyo Electric Power Company’s Fukushima ice wall project.

Dale Klein, former head of the US Nuclear Regulatory Commission and a senior adviser to Tepco, told Kyodo News in Japan: "I'm not convinced the freeze wall is the best option. What I'm concerned about is unintended consequences. Where does that water go and what are the consequences of that? I think they need more testing and more analysis."
Fukushima workers
The $316m, 1500-metre wall is intended to contain irradiated water and keep Fukushima safe from the damaged nuclear reactors. It is intended to stay in use until 2020, using enough electricity every year to power 13,000 households, according to officials.

By next March Fukushima Daiichi's four damaged reactors will be surrounded by an underground frozen wall that will be a barrier between highly toxic water used to cool melted fuel inside reactor basements and clean groundwater flowing in from surrounding hills.

UK newspaper The Guardian reports that up to 400 tonnes of groundwater that flows into the basements each day must be pumped out, stored and treated – and on-site storage is edging closer to capacity. Decommissioning the plant will be impossible until Tepco addresses the water crisis.

The wall is being built with technology that has never been used on such a large scale. Tepco has also had problems freezing irradiated water – using the same method being used to build the underground wall – that has accumulated in underground trenches, raising concerns that the ice technology is flawed.

The company had safely removed 1200 of the 1500 nuclear fuel assemblies that were being stored in a pool in Reactor 4 when the tsunami smashed into the plant, knocking out backup power supplies and sending three of its reactors into meltdown.

Attempts to address the buildup of contaminated water in reactor basements suffered a serious setback last year when storage tanks sprung leaks. Meanwhile, the plant's water treatment facility, which can remove all radioactive nuclides except tritium, has been suspended several times owing to malfunctions.

For more nuclear power news

Follow Power Engineering International on Twitter




Editor's Picks

EU flag

Luxembourg government working on Hinkley Point C legal objection

As promised earlier this year, the Luxembourg government intends to file a lawsuit against the European Commission decisio...
David Cameron and Werner Faymann

Nuclear chief says Austrian legal action ‘damaging to efforts to address climate change’

The Austrian government has finally filed its legal challenge against the deal that facilitates subsidies for a nuclear po...
 Schleswig-Holstein Climate Minister Robert Habeck

Federal states applying pressure on Merkel government over subsidies to nuclear

States with green party representation in Germany are calling on the German government to take action against the prospect...
Mike Baston of Euracoal

Future global power generation mix – the coal-fired power perspective

In our inaugural PEi Google Hangout, Mike Bostan, Policy Officer at Euracoal tells Power Engineering International's Diarm...
Faymann

Austrian PM confirms lawsuit against Hinkley decision ready in weeks

Austrian Chancellor Werner Faymann has confirmed that his country will be registering its lawsuit against the European Com...
Latest Articles
China flag

China’s power consumption and thermal power investment on the rise

China's power consumption rose 1.3 per cent in the first half of 2015 when compared to the same period for last year while figures also show investment in thermal power infrastructure rose 14.9 per cent.

Endesa sign

Endesa outlines Latin American gas-fired and hydro power plant ambitions

Endesa Chile has unveiled a plan to develop 36 projects, amounting to 6300 MW of power in Brazil, Chile, Peru and Colombia.


Editorial Guides

Lubrication Challenges for the Biogas Industry in 2015

The biogas industry is growing in importance as the world continues to look for alternative, clean energy sources. However...

Maximising Power Plant Efficiency

The need for power plants to operate at maximum efficiency and flexibility while cutting emissions is greater than ever be...

How to cut your OPEX

How to cut your OPEX In a constantly evolving electricity market, factors such as over capacity and low coal costs can pu...

Buyers Guide Companies

ComRent International LLC

Offers rentals, sales, and services of load banks for testing generators...

Advanced Energy

Advanced Energy is a global leader in innovative power and control techn...

ACOEM AB

ACOEM is a supplier of Fixturlaser's innovative and user-friendly equipm...

Fluid Energy Controls Inc

CCI Thermal Technologies Inc

A leader in the development and manufacturing of industrial heating and ...

Buyers Guide Products

Fixturlaser NXA Pro

This laser alignment system features many ...

Bore Measurement

Typical applications are full bore measure...

RETROFIT

Braden's retrofit strengths are divided in...

Air Filtration

Braden filtration offers a wide range of f...

Exhaust Systems

Leader in Exhaust Bypass, Simple Cycle, Ex...

Power Engineering International

Whitepapers

AVEVA’s Digital Asset Approach - Defining a new era of collaboration in capital projects and asset operations

There is constant, intensive change in the capital projects and asset life cycle management. New challenges and opportunities are continually appearing thanks to dramatic developments in technology...

The bottom line: engine oil impact on engine reliability

A reliable and well-maintained gas-powered engine performs consistently and continuously, which can lead to a healthier bottom line for plant operators. There is a raised awareness around the need ...

Understanding Moisture Dynamics in Power Transformers

In this webinar recording "Moisture Dynamics in Power Transformers" (held originally in September 23, 2014) you will have a chance to learn about the phenomena and its importance to your ...

How to lower your total cost of ownership on DC Control Power

In this whitepaper, we look at implementing battery management solutions and how smart battery management effectively lowers the total cost of DC Control power systems and the risk of their failure...

Latest Digital Edition

  Power
  Engineering
  International
Look Inside >
Cover
Current Issue

Article Archives for Power Engineering International Magazine