NP EN 45004 : critérios gerais para o funcionamento de diferentes tipos de organismos de inspecção
Canalizações eléctricas / IPQ - Instituto Português da Qualidade
R044-001 : safety of machinery: guidance and recommendations for the avoidance of hazards due to static electricity: February 1999 / European Commitee for Electrothecnical Standardization
R064-004 : electrical installations of buildings protection against electromagnetic interferences (EMI) in installations of buildings / European Commitee for Electrothecnical Standardization