🛡️ ASME Pressure Vessel (Sec VIII)
Calculate ASME Section VIII Div 1 cylindrical shell thickness (UG-27), 2:1 ellipsoidal, torispherical, hemispherical heads, and MAWP rating.
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Double Precision (IEEE 754)
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🛡️ ASME Section VIII Div 1 Vessel Stress Profile & Head Geometry
Real-time visual 3D cutaway of shell hoop stress & 2:1 ellipsoidal formed dish📝 Configuration & Presets
💨 Air Receiver (12 bar)
🛢️ LPG Storage Bullet (18 bar)
🧪 316L Reactor (6 bar)
♨️ Steam Drum (35 bar)
ASME Sec VIII Div 1 Formulations:
• Shell (UG-27): t = (P · R) / (S · E − 0.6 P) + CA
• 2:1 Ellipsoidal (UG-32): t = (P · D) / (2 S · E − 0.2 P) + CA
• ASME Torispherical: t = (0.885 P · D) / (S · E − 0.1 P) + CA
• Shell MAWP: Pmax = (S · E · tcorr) / (R + 0.6 tcorr)
• Shell (UG-27): t = (P · R) / (S · E − 0.6 P) + CA
• 2:1 Ellipsoidal (UG-32): t = (P · D) / (2 S · E − 0.2 P) + CA
• ASME Torispherical: t = (0.885 P · D) / (S · E − 0.1 P) + CA
• Shell MAWP: Pmax = (S · E · tcorr) / (R + 0.6 tcorr)
📊 Pressure Vessel Sizing Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & ASME Standards
ASME UG-27 Shell Calculations
Calculates minimum thickness to resist circumferential hoop stress and longitudinal stress under internal pressure with corrosion allowance:
t = (P · R) / (S · E − 0.6 P) + CA
Formed Heads Geometry (UG-32)
2:1 semi-ellipsoidal heads provide superior membrane stress distribution compared to torispherical flanged and dished heads.
Key Engineering Assumptions
- Thin-wall cylinder assumption ($t \le 0.5 R$ or $P \le 0.385 S E$).
- Weld joint efficiency $E$ based on radiography testing (UW-11 / UW-12).
- MAWP evaluated in the fully corroded condition.