Local Stress Analysis of Nozzle Flange

Evaluation by Rating-Comparation in Accordance with EN 1092-1

Design code
Pressure class PN
Material group
Tensile strength at RT				MPa
Tensile strength at Td				MPa
Yield strength at Td				MPa
Creep rupture strength (mean)				MPa
Design stress				MPa
Rated working pressure				bar
Maximum working pressure				bar

Terms:

DN		nominal pipe size
nB		number of bolts
K		bolt circle diameter, mm
dGo dGi		outside and inside diameters of the gasket, mm
Fx Fy		lateral force components, kN
Fz		force in nozzle-axis direction, kN
Mx My		bending moment components, kN·m
Mz		torque, kN·m
peq		equivalent additional internal pressure due to additional loads, bar
eff		stress efficiency, %
pmax		maximum allowable pressure, bar

Note:

Lateral forces and torque are converted in the equivalent additional internal pressure causing equal equivalent stress.

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