PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Coatings Industry News

Main News Page


Corrosion Found in Japan Nuclear Plants

Monday, May 28, 2018

More items for Quality Control
More items from Asia Pacific

Comment | More

Corrosion and connected damages were recently discovered in several ventilation ducts at nuclear plants across Japan, prompting concern over how much radiation workers are being exposed to.

The Nuclear Regulation Authority, a governmental nuclear watchdog, released the information as part of a nationwide survey, which was prompted by the discovery of corrosion in Chugoku Electric Power Co.’s Shimane plant in western Japan in December 2016—the damage had left holes in air ducts.

Corrosion Discovered

Damages were found at 12 reactors at severeal plants including Tokyo Electric Power Co.’s Kashiwazaki-Kariwa plant in Niigata Prefecture, Tohoku Electric Power Co.’s Onagawa nuclear plant, Japan Atomic Power Co.’s Tokai nuclear plant and Tepco’s No. 1 Fukushima nuclear plant. If an accident were to occur, radioactive materials could pass through into a plant’s control room through the holes caused by corrosion.

© iStock.com / were1962

Corrosion and connected damage ere recently discovered in several ventilation ducts at 12 reactors at seven nuclear plants across Japan. This has provoked concerns over workers being exposed to radiation during an accident.

The common theme between the affected reactors is that they are all boiling-water reactors—the same sort used at the Fukushima plant. (Following the March 2011 earthquake, that plant released a sizeable amount of radioactive material into the air.)

The report says that the holes found were likely caused by dew condensation and rainwater that found its way inside the building, as well as salt deposits on the ducts.The watchdog concluded that the corrosion—and the subsequent holes in the ducts—occurred primarily because they were designed without filters equipped with a fresh-air intake, which would let fresh air into the room.

In light of the damage found, the NRA instructed electric power companies to inspect all ventilation ducts at their own facilities. No abnormalities have been discovered in these ventilation systems, however. Additionally, no problems were discovered at pressurized-water nuclear reactors either, given that filtering occurs near air inlets.

As a preventative measure, Chugoku Electric has chosen to increase the number of inspection points at fresh-air inlets, as well as taking more action against corrosion.

   

Tagged categories: Corrosion; Corrosion protection; Nuclear Power Plants; Quality control

Comment from peter gibson, (5/30/2018, 5:57 PM)

They said they were shutting down the plants. Short memory until the next big thing. Were all big mouth,then knew they had no power.


Comment from Michael Halliwell, (6/1/2018, 10:51 AM)

Well, nowhere near enough oil, gas or coal to supply their power needs on their own and importing them is super expensive...until solar, wind and geothermal can produce far, far more energy than they currently do, Japan really doesn't have a lot of choice but to stay nuclear. Though, it would be nice if they were also moving toward some of the newer designs that "go cold" when they have a disruption, rather then melt down.


Comment Join the Conversation:

Sign in to our community to add your comments.

Advertisements
 
HoldTight Solutions Inc.
 
Clean surfaces simply don’t rust, and no other product cleans like HoldTight®102.
 
HoldTight®102 is a wet blasting additive that decreases the water’s surface tension, allowing it to get into the profile of the surface and remove ALL contamination, including salts, acids, abrasives, light oils, and greases. HoldTight®102 leaves behind no film and evaporates with the water, providing a surface that is thoroughly clean and ready for coating, rust-free for up to 72 hours.
 

 
Fischer Technology Inc.
 
FISCHER Expands Corrosion Product Line
 
Rounding out Fischer’s extensive line of products for measuring protective coatings in the corrosion industry is the new ultrasonic wall thickness gauge UMP series.
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-Tator EH&S Services
 
• Ambient & Worker Exposure Air Monitoring
• Safety & Health Program Development
• Lead Paint Assessments
& Specifications
• Health Hazard & Jobsite Safety Assessments
Call 1-800-532-3633
 

 
DeFelsko Corporation
 
PosiTector SST Soluble Salt Tester
 
Measures the concentration of soluble salts on metal surfaces. Use with all Bresle patch types including the reusable, adhesive-free PosiPatch.
 

 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Stop Guessing the Classification Rating of Your Cross Hatch Adhesion Testing Results
 
SEMicro's newly-patented Adhesion Testing Analyzer takes the guesswork out of cross hatch tape adhesion testing standards such as ASTM D3359 and ISO 2409.
 

 
US Minerals
 
Hit Harder. Clean Faster.
 
Learn more at www.blackdiamondabrasives.com.
 

 
Jotun Paints Inc.
 
Jotun Jotachar 1709
 
Mesh-free passive fire protection epoxy designed to protect against hydrocarbon pool fire scenarios for up to four hours as defined in the ANSI/UL1709 standard.
 

 
Sauereisen, Inc.
 
Corrosion Resistant Materials for the Wastewater Industry
 
33+ years of successful installations

sauereisen.com
 

 
Blastox/The TDJ Group, Inc.
 
Blastox® - One Step Lead Abatement
 
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!
1(800)-252-7869
 

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us