[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

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