Surge Margin Analysis
Calculate surge margin, control line positioning, and minimum stable flow for centrifugal compressor anti-surge control per API 617. Includes safety margin verification and operating zone classification.
Flow Parameters
ACFM
Current operating flow rate at suction conditions
ACFM
Minimum stable flow from performance curve
Control Parameters
% above surge
Typical: 10% per API 617
% above control
Additional buffer for process upsets
Head Parameters (Optional)
ft or ratio
Head or Pressure Ratio at operating point
ft or ratio
Maximum head at surge point
Learn the Theory
Understand surge phenomena, anti-surge control strategies, and control line positioning