JAPAN ATOMIC INDUSTRIAL FORUM, INC.

for Japanese

ATOMS in JAPAN

13 December, 2018

Decommissioning FBR Monju: Processing of Fuel Assemblies Is Underway

On December 7, the Japan Atomic Energy Agency (JAEA) reported to the Safety Monitoring Team of the Nuclear Regulation Authority (NRA) on the state of decommissioning the prototype fast breeder reactor (FBR) “Monju.”

FBR Monju

The decommissioning plan for the FBR, approved by the NRA at the end of March, comprises four stages. In the first stage, designated a period of removal of fuel (FY18 through 22), major items to be carried out include sampling of secondary system sodium, removal of fuel assemblies, and evaluations of pollution distribution.

The removal of Monju’s fuel assemblies consists of work to transfer the assemblies from the reactor core to a fuel storage tank outside the core (fuel removal), and then from that tank to a fuel pond (fuel processing and storage).

According to JAEA’s explanation at the meeting on December 7, the transfer of fuel assemblies from the tank outside the core to the fuel pond began at the end of August, but as of December 6, only 54 of the 530 assemblies had been transferred, and the target for completing processing of one hundred assemblies, which was initially set for mid-December, has been postponed until January 2019.

As of the end of November, a total of 64 “faults” or “phenomena” had occurred in the course of the work, which were corrected, with improvements reflected in the subsequent work.

Toward FY19 (starting in April 2019), when the processing of fuel assemblies will be in full swing, experience will be accumulated in maintenance related to sodium adherence. A five-team system will then be launched based on skills acquired using a three-team system.

Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

SNS facebooktwitter

NPPs Map

Video

“The current situation at Fukushima Daiichi NPS” -From 3.11 toward the future- (ver, July 2019)

8 July, 2019
“The current situation at Fukushima Daiichi NPS” -From 3.11 toward the future- (ver, July 2019)09:17

Recent News

29 November, 2019
NRA Issues Draft Review Report: Onagawa-2 Meets New Regulatory Standards
28 November, 2019
RIKEN Unveils Transportable Compact Neutron Source System
27 November, 2019
JAIF Releases Results of Fact-Finding Survey of Japanese Nuclear Industry for Fiscal 2018
26 November, 2019
Hitachi Receives Order from Mayo Clinic to Build First Carbon Ion Treatment System in North America
25 November, 2019
Keidanren: Japan’s Commitment to Low-Carbon Society Shows NPP Restarts Helped Reduce CO2 Emissions in Fiscal 2018
21 November, 2019
TEPCO Announces Timeline for Storage and Disposal of Treated Contaminated Water at Fukushima Daiichi
15 November, 2019
JAEA Holds Public Meeting, Discusses Future Vision, Fukushima Reconstruction and Revitalization
15 November, 2019
IAEA/RCA Symposium: Cooperating with Developing Countries Through Nuclear Science and Technology
8 November, 2019
EU to Ease Restrictions on Japanese Food Imports, Though Chief Cabinet Secretary Suga Asserts Japan Will Work Toward Their Full Elimination
28 October, 2019
OCCTO’s Electricity Supply and Outlook for Winter Sees Capacity Reserve Margin of 3 Percent Nationwide
▲TOP