re-certification of ims system and conducting surveillance audits thereafter at nhpc corporate office , faridabad for iso-9001 2015 , iso-14001 2015 and iso-45001 2018 re-certification of ims system and conducting surveillance audits thereafter at nhpc corporate office , faridabad for iso-9001 2015 , iso-14001 2015 and iso 45001 2018 , recertification ( including cost of re-certification audit and registration & issuance of certificate ) , providing re-certification /certification services to corporate office , nhpc ltd . , sector -33 , faridabad as described in the scope of work , 1st year cost of re-certification ( including cost of re-certification audit and registration & issuance of certificate ) , for two surveillance audits ( every 12 months ) , 2nd year cost of certification ( cost of first annual surveillance audit ) , 3rd year cost of certification ( cost of second annual surveillance audit )