Question - IOG

a) Give the meaning of 'safe operating envelope' (2)

b) Identify four operating parameters that are part of  the safe operating envelope within an oil and gas plant (4)

c) Outline the failure mode 'thermal shock' (2)

Work Equipment 3

Spotlight on the CSB Safety Video: Fire from Ice

    Many incidents have occurred in the 21st Century that contain lessons from which we can learn. 

     One of these occurred on February 16, 2007 where a propane fire erupted at the Valero McKee Refinery in Sunray, Texas, north of Amarillo.

     Three workers suffered serious burns, and the refinery was forced to shut down. 

      The fire began followed a leak in the propane deasphalting unit.

NOTE:-
NOTE

1.The 'flash back of the fire to the source of the leak' 

2. The resulting jet fire.

3. The rapid collapse of a major pipe rack carrying flammable hydrocarbons. 

4. Possible impact of the storage of chlorine

5. Possible BLEVE from butane spheres