NA 109
DIN-Normenausschuss Erdöl- und Erdgasgewinnung (NÖG)
Technische Regel
[AKTUELL]
API RP 500
API RP 500
Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1, and Division 2
Titel (englisch)
Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1, and Division 2