[VESSEL] ASME Code에 따른 VESSEL 두께 계산방법 (Shell Thickness)

 

ASME Code에 따른 내압 두께 계산방법 (Shell Thickness)

 

 

Thickness of Cylindrical Shells under Internal Pressure (UG-27)

 

 

1. Circumferential Stress (Longitudinal Joints)

P : internal design pressure

R : corroded inside radius of the shell

S : maximum allowable stress value

E : joint efficiency

 

 

2. Longitudinal Stress (Circumferential Joints)

P : internal design pressure

R : corroded inside radius of the shell

S : maximum allowable stress value

E : joint efficiency

 

 

3. Shell의 Design Thickness

(1) Circumferential Stress 에 의한 두께와 (2) Longitudinal Stress 의한 두께 중에서 더 큰 값에 Corrosion Allowance를 더 한 두께가 Design Thickness가 된다.