for Japanese


2 November, 2016

Japanese Power Utilities Assert JCFC-made Equipment Sufficiently Strong for NPPs

Responding to the charge that equipment made by the Japan Casting & Forging Corporation (JCFC)—a major manufacturer of large-forged steel products for NPPs—for use at the Flamanville-3 nuclear power plant (PWR, 1630MWe) in France was too weak for use in safety-related systems, eleven Japanese power utilities generating nuclear power—including the Tokyo Electric Power Co. (TEPCO) and the Kansai Electric Power Co. (Kansai EP)—reported to the Nuclear Regulation Authority (NRA) that the JCFC-made equipment in place at their NPPs was sufficiently strong.

The NRA will decide by the end of this month whether to accept the findings of the companies.

Each of the power utilities investigated the possibility of weaker-than-expected strength in safety-related equipment made with the same forging method as that in France. They began their investigations looking at manufacturing records, checking for the possibility of insufficient strength.

Additionally, they sliced off parts of steel ingots containing a high concentration of carbon—a cause of insufficient strength—and analyzed the carbon concentrations. Having confirmed that the concentrations did not exceed the reference value, all of the power utilities reported no incidence of strength deficiency.

JCFC has manufactured vessel heads for eleven NPPs—including Takahama-2, Genkai-2, -3 and -4, and two NPPs to be decommissioned (Mihama-2 and Genkai-1). As indicated, no problems were found in those reactors.

In addition, no problems in strength deficiency were found in NPPs having similar equipment manufactured by other firms, including Japan Steel Works, Ltd. (JSW).

In 2014, examinations of the Flamanville-3 NPP, under construction in France, discovered that equipment manufactured by the French company Le Creusot Forge was weaker than expected. After further investigation, the French Nuclear Safety Authority (ASN) pointed out that there were also problems in the strength of steel products manufactured by JCFC.


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

SNS facebooktwitter

NPPs Map


Grossi on Fukushima: Marking a Decade Since the Accident

10 March, 2021
Grossi on Fukushima: Marking a Decade Since the Accident04:11

Recent News

13 January, 2022
METI Minister Hagiuda Discusses U.S. Nuclear Cooperation, Winter Electricity Supply and Demand
27 December, 2021
TEPCO Submits Application to NRA for Facilities to Deal with ALPS-Treated Water at Fukushima Daiichi
18 November, 2021
METI Minister Speaks to IAEA International Conference on Decade of Progress Since Fukushima Daiichi Accident
15 November, 2021
Nuclear Energy’s Contribution to Achieving SDGs
8 November, 2021
COP26: Prime Minister Kishida Announces Additional Contribution of USD10 Billion for Climate Change Measures
30 October, 2021
Reelection of Suttsu Mayor Means Literature Investigation for HLW Disposal Will Continue
21 October, 2021
Kishida Makes First Visit to Fukushima Since Becoming Prime Minister
15 October, 2021
LDP Adds SMR Development and Nuclear Fusion to NPP Restarts in Its Policy Manifesto
7 October, 2021
Kishida Administration Inaugurated, with New METI Minister Hagiuda Holding Press Conference on Taking Office
6 October, 2021
IAEA Holds 65th General Conference in Vienna, with Japanese Minister of State for Science and Technology Delivering Statement in the General Debate
30 September, 2021
JAEC Releases 2020 White Paper on Nuclear Energy
17 September, 2021
NRA Permits Shimane-2 under New Regulatory Standards
14 September, 2021
IAEA Deputy Director General Evrard Visits Japan in Advance of Safety Review of ALPS-treated Water
1 September, 2021
Evaluation Report Issued by IAEA’s Review Mission to Fukushima Daiichi: First Visit since 2018
24 August, 2021
METI and IAEA Agree on Further Review Missions to Fukushima Daiichi
4 August, 2021
JAEA Restarts High-Temperature Engineering Test Reactor “HTTR”
2 August, 2021
Information about Fukushima Daiichi NPS Water Treatment
28 July, 2021
METI’s Committee Shows Rough Draft of Next Strategic Energy Plan
2 July, 2021
Mihama-3 Restarted After Decade-long Hiatus: First Restart in Japan of a Reactor Operating Beyond 40 Years
28 June, 2021
Mihama-3 Restarts after Decade-long Hiatus