Update to OSHA’s Process Safety Management Regulation. Part 11: Defining the Limits of a PSM-Covered Process

Many of the proposed updates to OSHA’s process safety standard are to do with limits and boundaries. This particular update explicitly addresses this issue.

The Refinery Operator’s Story

During a HAZOP on a large oil refinery, one of the senior operators told me, “Just by opening and closing valves I can put gasoline into the refinery manager’s coffee cup…