1. Universitas Negeri Malang,Department of Electrical Engineering,Malang,Indonesia
2. Directorate of Nuclear Facility Management, National Research and Innovation Agency,Tanggerang,Indonesia
3. Politeknik Negeri Jakarta,Department of Electrical Engineering,Depok,Indonesia
4. Certification center, PT. PLN (Persero),Jakarta,Indonesia
5. Politeknik Negeri Manado,Departement of Electrical Engineering,Manado,Indonesia