In April 2008, the French nuclear safety authority ("Autorité de sûreté nucléaire", ASN) reported that a quarter of the welds inspected in the secondary containment steel liner are not in accordance with norms, and that cracks have been found in the concrete base. EDF stated that progress was being made on these issues, which were raised very early in construction; however, on 21 May, ASN ordered a suspension of concrete pouring on the site. A month later, concreting work resumed after ASN accepted EDF's corrective action plan, which included external oversight checks.