In June 2019 the regulator ASN determined that eight welds in steam transfer pipes passing through the two-wall containment, that EDF had hoped to repair after startup, must be repaired before the reactor is commissioned. On 29 June 2019, it was announced that the start-up was once again being pushed back, making it unlikely it could be started before the end of 2022. It is estimated the repairs will add €1.5 billion to the costs, bringing the total to €12.4 billion.