[ASME] ERW RT2 해석
1. Standard/Code: BPV Section VIII Div 1
2. 해당 항목: Section VIII, Division 1 (2001 Edition, 2002 Addenda); UW-11(a)(5)(b), UW-12, and
UG-116
3. Reference:Interpretation Number: VIII-1-01-150
4. 내용:
내용 (1): A pressure vessel is constructed according to the rules of Section VIII, Division 1 using ERW pipe for the shell and seamless plate for the elliptical heads, which are welded to the shell with a Type No. 1 weld per Table UW-12. All categories B and C butt welds are radiographed per UW-11(a)(5)(b). Is it required by UG-116(e) that the vessel be marked RT-2?
답 (1): Yes.
내용 (2): When calculating the head thickness of the pressure vessel described in Question (1), per UG-32, is it permissible to use a value of E= 1.00?
답 (2): Yes, provided the head is seamless or all category A welds in the head are fully radiographed.
내용 (3): When calculating the shell thickness of the pressure vessel described in Question (1), per UG-27, is it permissible to use a value of E= 1.00?
답(3): Yes