Definition(s)
Opening
Any aperture, door, window or non-gas-tight fixed panel.
Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Any aperture, door, window or non-gas-tight fixed panel.
Source: IEC 61892-7, Mobile and fixed offshore units – Electrical installations – Part 7: Hazardous areas. Global Standards