Nuclear security

Coverup at French Nuclear Supplier Sparks Global Review

Inspectors from the U.S. and other countries are investigating a decadeslong coverup of manufacturing problems at a key supplier to the nuclear power industry, probing whether flaws introduced in a French factory represent a safety threat to reactors world-wide.

Inspectors from the U.S., China and four other nations visited ArevaSA’s Le Creusot Forge in central France earlier this month to examine the plant’s quality controls and comb through its internal records.

A string of discoveries triggered the newly expanded review: First, French investigators said they found steel components made at Le Creusot and used in nuclear-power plants across France had excess carbon levels, making them more vulnerable to rupture. Then, the investigators discovered files suggesting Le Creusot employees for decades had concealed manufacturing problems involving hundreds of components sold to customers around the world.