ASME B31.3
ASME B31.3
(OP)
I need some help determining the acceptable limits of porosity in B31.3 normal fluid service.
Criterion Value Notes for Table 341.3.2
D Size and distribution of internal porosity See BPV Code, Section VIII, Division 1, Appendix 4
E Size and distribution of internal porosity For T w ≤ 6 mm (1⁄4 in.), limit is same as D
For T w > 6 mm (1⁄4 in.), limit is 1.5 D
Im having trouble interpting what this means and the code it need to reference to.
Criterion Value Notes for Table 341.3.2
D Size and distribution of internal porosity See BPV Code, Section VIII, Division 1, Appendix 4
E Size and distribution of internal porosity For T w ≤ 6 mm (1⁄4 in.), limit is same as D
For T w > 6 mm (1⁄4 in.), limit is 1.5 D
Im having trouble interpting what this means and the code it need to reference to.
Thanks,
Tommy





RE: ASME B31.3
MANDATORY APPENDIX 4
ROUNDED INDICATIONS CHARTS
ACCEPTANCE STANDARD FOR
RADIOGRAPHICALLY DETERMINED
ROUNDED INDICATIONS IN WELDS
If you don't have Appendix 4 of the code you have a problem.