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Qualification ranges for CJP weld test.
Table 4.1 gives the specific positions and weld joint.
So here is the confusion for me.
Note c)" Fillet welds in production T-, Y-, or K-connections shall conform to Figure 9.12. WPS qualification shall conform to 4.12."
4.1.2"4.12.1 Type and Number of Specimens. Except as permitted
elsewhere in Clause 4, the type and number of
specimens that shall be tested to qualify a single-pass fillet
weld and/or multiple-pass fillet weld WPS are shown
in Table 4.4. Qualification testing may be for either a
single-pass fillet weld or multiple-pass fillet weld or both"
Q1. Is Note c only applicable to TYK joints?
Q2. If No to Q1 then all Fillet weld tests has to be done in addition to CJP to determine max single pass and min multi pass?
Q3. If Yes to Q1 then Fillet weld test has to be done in addition to CJP test for TYK joints?
Q4. If CJP qualifies FIllet weld without additional fillet tests. How is the max single pass and min multipass determined?
Did you check the AWS website for errata. I didn't, but I would check to see if there has been a correction.
Note C does pertain to T, Y, and K details.
As a past chair of D1.1 once told me, "Any welding engineer that is worth his salt would qualify the fillet welds first and then the groove weld using the parameters established while qualifying the fillet welds."
I think that should get you on the right track.
Best regards - Al
I have not checked for an errata
I have read quite a bit of your other posts on AWS D!.1 and have found it extremely informative. thanks.
And I tend to aggree that you have to ensure parmeter transfer between differnet joint configurations, however considering rule of law (Code), however currently I am in the client review chair trying to limmit the amount by which fabricators tend to bend the rules. So given that note C prviously note i is for TYK joints I woudl say a CJP weld covers fillet welds and size is dependant on design drawings.
I just tend to wonder why is the procedure clause not as clearly stated as the performence clause C as below?
4.21 Extent of Qualification
4.21.1 PJP Groove Welds for Nontubular Connections.
Qualification for CJP groove welds shall qualify
for all PJP groove welds.
4.21.2 Fillet Welds for Nontubular Connections.
Qualification of CJP groove welds shall qualify for fillet
welds. However, where only fillet weld qualification is
required, see Table 4.11.
4.21.3 Plug and Slot Welds. Qualification for CJP
groove welds on tubular or nontubular connections shall
qualify for all plug and slot welds. See Table 4.10 for
plug and slot weld qualification only. The joint shall consist
of a 3/4 in [20 mm] diameter hole in a 3/8 in [10 mm]
thick plate with a 3/8 in [10mm] minimum thickness
backing plate (see Figure 4.26).
Codes are developed by committees consisting of human beings. Humans are not infallible.
Best regards - Al
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