Integrated Management Systems surveillance  audit  of Nardis was conducted on 26, 30 and 31 december, 2023 based on ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO/TS 29001:2020 & E&P Forum HSEMS:1994 standards by SGS certification body and construction site in IRAN LNG project as well as head office was audited and previous certification were extended.