PSI Validation of Refinery Relief System
Marathon Petroleum Company
The client, one of the country’s largest crude oil refineries, called on EN Engineering to validate the PSI components of their relief system, including development of process diagrams, isometric drawings, design specification sheets, and associated equipment file items.
The project presented a number of interesting challenges. First, the overall size and scale of the project was enormous, covering every unit in the refinery. In addition, the team had to deal with the demolition of equipment in several units, which impacted the relief paths.
The project required field verification of all process diagrams and isometric drawings representing the flare, atmospheric, and process/thermal components of the client’s relief system. EN Engineering developed a tracking spreadsheet to ensure that all required information was gathered during the field verification and reviewed it against the information found in the multiple refinery information storage systems for master PSI and equipment documentation.
All of the required revisions were tracked across the multiple refinery information storage systems, and the systems were audited to confirm the proper documentation had been linked and correctly illustrated the project revisions. The PSI validation and equipment documentation assured the client that the relief system PSI and equipment documentation were correct and the information can be used with confidence in the future.
“The PSI validation assured the client that the relief system PSI and equipment documentation were correct and the information can be used with confidence in the future.”