Volume 2 Issue 3 | 2025 | View PDF
Paper Id:IJMSM-V2I3P102
doi: 10.71141/30485037/V2I3P102

Adaptive Nozzle Load Envelope (ANLE): A Probabilistic Framework for Early-Stage Design of Pressure Vessels and Piping Systems

Farzad Gardaneh, Walther Stikvoort

Citation:
Farzad Gardaneh, Walther Stikvoort, "Adaptive Nozzle Load Envelope (ANLE): A Probabilistic Framework for Early-Stage Design of Pressure Vessels and Piping Systems" International Journal of Multidisciplinary on Science and Management, Vol. 2, No. 3, pp. 10-19, 2025.

Abstract:
Design of pressure vessel and piping system is often hindered by the linear order of design steps, resulting in expensive and time-consuming redesign. In this article, the Adaptive Nozzle Load Envelope (ANLE) is presented as a new approach that enables vessel and piping simultaneous design by establishing probabilistic boundaries for the loads at the vessel-nozzle interface during the initial phase of design. ANLE employs a simplified piping flexibility model, characterized by an effective length parameter, to determine reaction forces without the need for a detailed piping configuration. The use of ANLE is demonstrated by a case study on a petrochemical vessel, where ASME compliance and other internationally accepted codes are achieved with design efficiency improvements. The proposed methodology is contrasted with current practice, with both advantages and development needs areas identified.

Keywords: Pressure Vessel, ANLE, Effective Length, Piping Load.

References:
1. ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, 2019 Edition.
2. Walther Stikvoort, “Load Capacity Limits of Flanged Pressure Vessel Nozzles,” Petroleum & Petrochemical Engineering Journal, vol 2, no. 3, 2018.
3. ASME B16.5, “Pipe Flanges and Flanged Fittings,” pp. 1-250, 2020.
4. ASTM A516 Gr.70 and ASTM A106 Gr.B Material Standards, 2009.
5. Welding Research Council, “WRC Bulletin 537/297: Local Stresses in Cylindrical Shells Due to External Loadings on Nozzles,” 2010.
6. M.W. Kellogg Company, "Design of Piping Systems," 2nd Edition, 1956.
7. William Koves et al., "Establishing Allowable Nozzle Loads," Proceedings of the ASME 2011 Pressure Vessel & Piping Division Conference PVP2011-57100, Baltimore, USA, pp. 1-9, 2011.