Nov 3, 2017 - OISD (Oil Industry Safety Directorate) is a Technical Directorate under the. OISD has developed 120 standards for enhancing the safety of oil. While OISD standard 118: Layout for Oil & Gas Installations indicates interdistances between various facilities, OISD-113 refers to distances pertaining to classification of areas for electrical installations.

Oil Industry Safety Directorate (OISD) is a technical directorate under the Ministry of Petroleum and Natural Gas, Govt. Of India that formulates and coordinates the implementation of a series of self regulatory measures aimed at enhancing the safety in the oil & gas industry in India.