What is on-stream factor in process units, oil refinery and petrochemical Home › Forums › Petro Solutions Forum › Process Operations › What is on-stream factor in process units, oil refinery and petrochemical Tagged: on-stream factor, process unit, refinery, reliability This topic has 0 replies, 1 voice, and was last updated 1 year, 7 months ago by Nasir Hussain. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Log in / Register