These standards, which are abbreviated to HSE-MS, have a specific basis for unified management system and are distinguished from OHSAS 18001 and ISO 14001.

Since 2007, the Iranian Ministry of Oil has been trying to implement operational guidelines and enforce them on its subsidiary organizations, namely, Petrochemical Corporation, Iranian Natural Gas Company and Iranian Oil Refinery and Distribution Company. Implementing all these guidelines, Persian Offshore now keeps HSE-MS certificate from the DNV institute.
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