| Subject | Italian | English |
| tech., el. | codice standard EIA | EIA standard code |
| comp., MS | codice Standard Industrial Classification | Standard Industrial Classification code (A four-digit number assigned by the U.S. government to designate the economic activity of businesses) |
| work.fl. | codici standard | standardized codes |
| gen. | Gruppo di lavoro " Sicurezza dei reattori ad acqua leggera - metodologia , criteri, codici e standards " | Working Party on Light-Water Reactor Safety - Methodology, Criteria, Codes and Standards |