Transcription of Section I Boiler Safety Valve Sizing & …
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Section I Boiler Safety Valve Sizing & SelectionSizing & Selection23 and 24 January 2007 Boiler Set SizingRHORHOSHODrumTotal Relieving Capacity of all Code valves must be RHIequal to or greater than the maximum continuous rating of the Boiler (Drum & SHO)of the Boiler (Drum & SHO) or reheater (RHO & RHI).23 and 24 January 2007 Boiler Set SizingDrumSteam Drum valves must relieve a minimum of 75% of Boiler and 24 January 2007 Basic Section I Sizing RulesBasic Section I Sizing RulesLdl di-Low set drum Valve set at design pressure-Other valves shall have staggered settings-Not permitted to rise more than 6% above MAWP, taking into account 3% accumulationAll valves open/full flowing 106%Low Set Drum Valve open/full flowing (High Set Drum Valve set pressure)103%Design Pressure (MAWP) (Low Set Drum Valve set pressure)100%23 and 24 January 2007(p)
Jan 24, 2007 · Boiler Set Sizing RHO SHO Drum Total Relieving Capacity of all Code valves must be RHI equal to or greater than the maximum continuous rating
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