• IEC TC45 SC45A member – sponsored by MOTIE  and KATS
  • IEC TC45 SC45A WG 3
    • IEC 61500 Nuclear power plants - Instrumentation and control important to safety - Data communication in systems performing category A functions, technical secretariat
  • IEC TC45 SC45A WG 2
    • IEC 60744 – Safety logic assemblies of nuclear power plants - Characteristics and test methods project leader (kwangyoung sohn, South Korea)
  • IEC TC45 SC45A WG 3, 7
    • IEC TR-63084, TR for I&C platform qualification, co-project leader (Mr. Horst Miedl (Germany), kwangyoung Sohn (South Korea), Technical assistant (changhwan cho)
      • Performing government project by preparing New Work Item Proposal on CGID for hardware and software)

  • ISO TC 085 WG5 - Waste characteristic & management
    • ISO 24389-1 through 4 (Multi-part Std)
      • Part-1 : General
      • Part-2 : Pre-disposal
      • Part-3 : Disposal
      • Part-4 : Waste classification & characterization, Wast Tracking & Certification, Other supporting Systems