Presentation on theme: "P ETROLEUM U NIVERSITY OF T ECHNOLOGY A BADAN F ACULTY OF P ETROLEUM E NGINEERING Design of pressure vessels using PV Elite By: Aslan Momeni 9209214 Spring."— Presentation transcript:
P ETROLEUM U NIVERSITY OF T ECHNOLOGY A BADAN F ACULTY OF P ETROLEUM E NGINEERING Design of pressure vessels using PV Elite By: Aslan Momeni Spring 2014 Abadan-Iran
Principles of pressure vessels
Definition as related to Standard: EN 13445: A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. And other standards such as ASME section VIII and etc. The PVElite software can design pressure vessels base on ASME, PD5500, EN Shape of the pressure vessels. That is divided in two major groups: Cylindrical pressure vessel. Spherical pressure vessel.
Formation components of pressure vessel: Shell Saddle Lifting lug Leg lug Skirt …
The information of the pressure vessel that designed by process engineering group classify in Design Data Sheet(DDS).
Basic part of the pressure vessels.
Shell: That is the basic part of the pressure vessels and mainly manufactured by rolling of the flat sheets.
Various type of the head section:
Flange: Nozzles: Are used for leading the follow in or out, install equipment, ventilation and etc.
Various type of the nozzle: Set-throughSet-in Set-on
Various type of the support: Saddle that are used for horizontal pressure vessel. Skirt that are used for vertical pressure vessel. Lug support Leg support
The information that we should know!
Pressure: Absolute pressure Gauge pressure Atmospheric pressure( Mpa) Operation pressure Design pressure Maximum allowable working pressure Maximum allowable pressure, new and cold Hydrostatic test pressure
Temperature: Operation temperature Design temperature(UG-20) Minimum design metal temperature
Loading: Loading that caused from internal and external pressure The weight of vessel and contents The weight pump, duct, pipe and etc Loading that caused from earth quake, wind and etc … Allowable tensile stress: ASME Appendix 1 sectionII part D Allowable compressive stress: ASME Appendix 1 sectionII part D
Some calculations (just for shell of the pressure vessel)
Hoop stress(P≠ 0.385SE, t≥0.5R ): P=internal pressure(psi) S=maximum allowable stress(psi) sectionII, part D R=internal radius(in) t=minimum require thickness of shell(in) E=joint efficiency UW-12
Longitudinal stress(P≤1.25SE, R≤0.5t ): Spherical shells(t≤0.365R, P≤0.665SE ): corrosion situation: R new = R old + corrosion allowance.
Radiographic(base on table UW-12 for P.No and Group No): Otherwise, spot radiography is adequate!