API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
(OP)
I overhear a lot of stuff in my office. I'm always interested in the "correct" answers to most of these arguments. I did a search here already but am still a bit perplexed. Say a welder is taking a 12" "butt" and 12"-on-12" "branch" test (for procedure qualification and/or welder qualification). Butt weld test in 5G position. Branch test conducted with run horizontal and branch pointing down. No problem figuring out required test specimens for the butt test (procedure qual. and welder qual.)as it is spelled out in Tables 2 & 3. What about required test specimens from the branch test for fillet and/or fillet/groove? I read 6.5.6 and 5.8, and referred to Figure 10. Interested in number of specimens and type tests. When these guys get done going back and forth, I'd like to know the answer from an outside source (you guys) just for the sake of not being BS-ed.
Thank you.
Thank you.





RE: API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
RE: API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
Regarding lap joints, per the note in API 1104 Figure 10 "For joints with an outside diameter less than 2.375 in. (60.3 mm), specimens shall be cut from the same general location, but two specimens shall be removed from each of two test welds". This is in agreement with Clause 6.3.1 which states "Four nick-break specimens shall be removed from the weld
at the locations shown in Figure 10".
So for either case, branch, fillet/lap, four nick breaks are required.
While opinions are 'like something else', and everyone has one, I recommend the PRCI document" Guidelines for Interpretation and Application of API 1104PR-82681361-6" as it clarifies many clauses in API 1104.
RE: API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
RE: API 1104 (20th Ed.) Branch Test Destructive Testing Specimens
Catalog No. PR-186-124502-R01