EXCEL - DRUM THICKNESS CALCULATION - SA 516 GR. 70 (AS PER IBR) - Steam Drum



TÍNH TOÁN ĐỘ DÀY CỦA BAO HƠI - SA 516 GR. 70 (THEO IBR)


Design pressure, Wp Kg/cm^2 (g)

Maximum Working Temperature, T1 °C

Metal Temperature, T2 = (T1) °C

°F

Drum I/D mm

PREMISSIBLE WORKING STRESS (f) = Et / 1.5

Et = Yield Stress at Metal temperature (From ASME Section - II, Part D) psi

Et = Yield Stress at Metal temperature (From ASME Section - II, Part D) Kg/cm^2

f = Et / 1.5 Kg/cm^2

Thickess of Drum Shell Provided, T1 mm

LIGAMENT EFFICIENCY

(E) Longitudinal Ligament of main bank tubes = (p - d) / p

MINIMUM THICKNESS

Tmin,  ((Wp x I/D) / (2 x f x E - Wp)) + 0.762 mm

thickness of shell (if >60mm) mm

stress value reduction (>60mm) %

actual stress value Kg/cm^2

Actual thickness,T2 mm






TÍNH TOÁN ĐỘ DÀY CỦA BAO HƠI - SA 516 GR. 70 (THEO IBR)


Design pressure, Wp Kg/cm^2 (g)

Maximum Working Temperature, T1 °C

Metal Temperature, T2 = (T1) °C

°F

Drum I/D mm

PREMISSIBLE WORKING STRESS (f) = Et / 1.5

Et = Yield Stress at Metal temperature (From ASME Section - II, Part D) psi

Et = Yield Stress at Metal temperature (From ASME Section - II, Part D) Kg/cm^2

f = Et / 1.5 Kg/cm^2

Thickess of Drum Shell Provided, T1 mm

LIGAMENT EFFICIENCY

(E) Longitudinal Ligament of main bank tubes = (p - d) / p

MINIMUM THICKNESS

Tmin,  ((Wp x I/D) / (2 x f x E - Wp)) + 0.762 mm

thickness of shell (if >60mm) mm

stress value reduction (>60mm) %

actual stress value Kg/cm^2

Actual thickness,T2 mm




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