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Impact Test Exemption with Dual Stamping (ASME Section VIII Div-1)

Impact Test Exemption with Dual Stamping (ASME Section VIII Div-1)

Impact Test Exemption with Dual Stamping (ASME Section VIII Div-1)

(OP)
Following are the vessel design/construction detail and I wanted to exempt the impact testing of plate:-
can anyone please confirm that whether my understanding of code is correct or wrong??

Vessel Marking Detail:
MAWP:-
20bar (g) @ 100degC
7bar (g) @100degC
MDMT:-
0degC @ 20bar (g)
-87degC @ 7bar
RT-1
Heat treated Vessel.
----------------------------------
Design/Construction Detail:
Cylindrical Shell-
MOC-SA 515 Gr.70
ID=2500mm
Minimum thickness=20mm
Nominal thickness=25mm
Corrosion allowance=0mm
----------------------------------
1st Design condition-
20bar @ 100degC
MDMT=0degC
Minimum thickness=20mm
Nominal thickness=25mm
Impact test exempted as per UCS-66(a) & UCS-68(c)
----------------------------------
2nd Design condition-
7bar@100degc
MDMT=-87degC
Minimum thickness=8mm
Nominal thickness=25mm
Impact test exempted as per UCS-66(b)(3)
----------------------------------

Regards
DM.

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