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Risk-Based Inspection Case of Histories (Part 1 of 2)

An Interview with Sean Johnson, Pressure Equipment Integrity Assurance Engineer for the Shell Martinez, CA Refinery.
By Greg Alvarado at Inspectioneering Journal. This article appears in the July/August 2006 issue of Inspectioneering Journal

Refinery Background


The Shell Martinez Refinery has been in operation since 1915, and is located 30 miles northeast of San Francisco on about 1,000 acres of land. The refinery combines state-of-the-art facilities and equipment to convert approximately 165,000 barrels of crude oil a day into many products including automotive gasoline, jet fuel, diesel, petroleum coke, industrial fuel oils, liquefied petroleum gas, asphalt, sulfur, and lubricants.


The Shell Martinez Refinery has grown into a sprawling yet efficient assemblage of sophisticated processing equipment; modern control rooms; environmental protection facilities; shipping and receiving terminals for marine, rail, and truck cargoes; maintenance shops; office buildings; quality assurance laboratories; storage tanks; and warehouses. In some ways it resembles a small city with its own utilities, medical facilities, and fire department.


More than 700 men and women fill jobs encompassing a wide variety of activities. Most are highly skilled craftspersons and experienced operating personnel who work to make sure the refinery functions safely and efficiently day and night.

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