Selection of Burst Pressure for Disk. Pb

Rupture Discs Used in Multiple Or For Additional Hazard Due To External Heat 

The burst pressure maximum cannot exceed the MAWP of the vessel. Depending on the situation, it may be necessary to work backward to the operating pressure maximum to see if this is usable. Table 7-9 summarizes typical rupture disk characteristics noting that the maximum normal operating pressure of the system is shown as a function of the rupture disk bursting pressure, Pb. 

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