Herman Nackaerts, head of nuclear inspections worldwide at the International Atomic Energy Agency ( IAEA), is scheduled to visit South Korean on Sunday to discuss nuclear safety, the foreign ministry here said Friday.he safeguard investigator will arrive here for a six-day visit that includes meetings with officials including Lim Sung-nam, Seoul\'s chief negotiator at the six-party nuclear disarmament talks.Officials are expected to discuss expanding cooperation between South Korea and the IAEA on nuclear safeguards, according to the ministry.In his first South Korea trip since taking office in 2009, Nackaerts will also visit nuclear power plants across the country.