Coaching Conversations from the CWI Training Course
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Question regarding BOD WQTR1 and bend tests.
I got a question asking what is wrong with WQTR1, I selected "Insufficient bend tests were performed." because 5.3.1 specifies 4 side bend tests for GMAW-S 3/8"+ (WQTR1 provided only 2). My answer was wrong and the correct answer was "Qualified range for welding type is incorrect", which I see now.
But aren't there suppose to be 4 side bend tests as well? Thanks
Hi, Matthew. Keep in mind that 5.3.1 is referring to procedure qualification while the WQTRs are for performance qualification. We would look at Clause 6 for anything to do with the WQTRs. Table 12 requires 2 bend tests.
I see that now, thank you
I need help with this question.
The question is: "Which welding position is rotated?"
Answer 1: 2F
Answer 2: 1F
Answer 3: 5F
Answer 4: 6G
Answer 5: 6GR
The correct answer is: Answer 2.
My answer was: Answer 5.
Hi, Artemio. So for the 1F position, we are trying to keep the position always flat, so that means we need to keep rotating the pipe in order to keep the joint and the welding flat.
thank you, sir
On these type of PJP questions how do you know wether to weld the thickness of the thinner part joined or the prequalified weld size for the thinner base metal?
The question is: "What is the minimum prequalified PJP weld size for welding a 3/16-inch thick member to a 1 inch thick member when preheat is used to prevent cracking?"
Answer 1: 3/16-inch
Answer 2: 5/16-inch
Answer 3: 1/16-inch
Answer 4: 1/4-inch
Answer 5: 1-1/2 inches
The correct answer is: Answer 3.
My answer was: Answer 1.
Hi, Jordan. We would look in note a for that. Since we're using a crack prevention process, T = the thinner base metal.
So, progression is not an essential variable when qualifying an WPS, now qualifying an welder it is, correct?
The question is: "Which of the following essential variable changes does not require WPS requalification?"
Answer 1: Changing from a 70 ksi filler metal to a 58 ksi filler metal
Answer 2: Changing from an A-4 filler metal to an A-3 filler metal
Answer 3: Changing from an M-3 backing bar to an M-1 backing bar
Answer 4: Changing the vertical progression from uphill to downhill
Answer 5: Changing the shielding gas from 100% Argon to 75% Argon and 25% Carbon Dioxide
The correct answer is: Answer 4.
My answer was: Answer 2.
That's right, Luther. Table 8 doesn't list progression as an essential variable for WPS qualification. However if we were talking about welder qualification, 6.2(7) would have some limitations to keep in mind.
👍
I need help with this question.
"Based on the image link above, calculate the yield strength of a tensile test specimen that has a cross-sectional area of 0.27 inches squared, and yielded at 19,520 lbs."
Answer 1: 5,270 psi
Answer 2: 758.3 Mpa
Answer 3: 72,010 psi
Answer 4: 498.5 Mpa
Hi, Romeish. Which part of the question is giving you trouble? In this instance, we go 19,520 divided by 0.27 to get 72,296.296 psi. Since that option is not available, we convert it to Mpa to see if that fits 72,296.296 x .006895 gives us about 498.48 Mpa for our correct answer.
Thank you
Ima little confused here guys. I guess I'm having trouble understanding tables 10 and 16 in section 10 Repair and Removal of weld defects. Do the boxes that have the X mean they are qualified or would have to re qualify?
The question is: "Which of the following is considered an essential variable for repair welder qualification?"
Answer 1: Using 1-inch thick weld deposits when a 1/2-inch weld deposit was used for the qualification test
Answer 2: Welding in the horizontal position when the 6G position was used for qualification testing
Answer 3: Performing an external partial-thickness repair when internal partial-thickness was used for qualification testing
Answer 4: Using GMAW-S for the cap pass when it was only used on the fill passes during qualification testing
Answer 5: All of the above
The correct answer is: Answer 4.
My answer was: Answer 3.
Hi, Daniel. The X's mean it qualifies that type as well. Look at 10.3.3.a for example where it says a full thickness repair can also qualify partial or cover passes per Table 10. 👍
ok so the table is read left to right.? I think I was trying to understand it top to bottom.
Yeah you would look at the column on the left for the repair type performed, then move to the right to see which other types it qualified. 👍
Got it .. Thanks Matt
I got it right, but how would I know this ? The question does not state anything about it being an intermittent fillet weld.
The question is: "Per the BOS, in which scenario is a 7/8-inch structural steel fillet weld allowed to have 3/8-inch of convexity?"
Answer 1: When the connection is a nontubular statically loaded connection
Answer 2: When the convexity falls outside the effective length on an intermittent fillet weld
Answer 3: When the connection is a tubular connection
Answer 4: When the connection is cyclically loaded
Answer 5: When the connection is statically loaded
The correct answer is: Answer 2.
My answer was: Answer 2.
Hi, Luther. Right, we don't state that in the question, but from the parameters listed in the question you can deduce that B is the best answer because as you cycle through the options, B is the only one that fits.
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for clarification for myself when using the welding usage conversion chart heat input section the letter m is referring to units in meters correct?
part a module12 question # 6 a tensile strength achieves 70 ksi what are the tensile strength results in Mpa? The chart provided as reference does not show a conversion from ksi to Mpa however 1,000 psi = 1 ksi should I just be memorizing this conversion equation?
Hi, John. Yep, m means meters in that equation.
For your second question, you don't need to memorize this chart but do need to automatically know that 1 ksi = 1,000 psi. That way you can convert from 70,000 psi to Mpa.
Thank you for the clarification.
I was confused by the word "pore". This isn't in the definitions clause of D1.1. Is this something exclusive to RT? what is the term "pore" referring to? Is this just a discontinuity?
The question is: "What is the minimum clearance between pores of a 1 inch weld in a cyclically loaded nontubular connection in tension?"
Answer 1: 2 inches
Answer 2: 3 inches
Answer 3: 2-1/2 inches
Answer 4: 1 inch
Answer 5: 3/4-inch
The correct answer is: Answer 2.
My answer was: Answer 1.
Hi, Joshua. Pore would be a porosity indication in this case. Good question.
Hi guys, on BOS procedure qualification for test question 11, I answered E ( over 1/8") as the BOS states greater than 1/8". The answer is 1/8". What am I missing here?
Hey Neeley. So the spec says it can't have any discontinuities over 1/8", correct? Then that means 1/8" is the maximum acceptable discontinuity size.
Thank you
You bet
Changing from RG60 to RG65 does not change filler metal classification per Table 2. Why would WPS reclassification be necessary? Thank you
The question is: "Which of the following filler metal changes would require WPS requalification for a Category II WPS?"
Answer 1: Changing RG60 to RG65 electrodes
Answer 2: Changing ER70S-2 electrodes to ER90S-G electrodes
Answer 3: Using Lincoln E7018-G electrodes instead of Atlantik E7018-G electrodes
Answer 4: Changing E7015 electrodes to E8018 electrodes
Answer 5: All of the above
The correct answer is: Answer 5.
My answer was: Answer 5.
Hi, Ken. So it's not a change in filler metal groups, but it is a change in classification since RG60 is a classification, RG65 is a classification, E7018 is a classification, and so on.
Got it... Thank you
So I seen that a fillet weld cannot have inclusions or porosity larger than 3/32 inch in greatest dimension. I also seen that the sum of the greatest dimensions of all inclusions and porosity shall not exceed 3/8 inch.
I questioned myself on which would be the correct answer and chose 3/8 due to the question saying in the weld but not specifying anything else. I was thinking it was asking for how much porosity or inclusion could the grand total in the weld be.
My question is what are some ways or key terms in the question that would keep me from making a mistake like this again?
If a question doesn't specify the "sum" of all inclusions and porosity would it be assumed it was only talking about inclusion or porosity in just one Fracture instead of all fractures combined in the weld?
This is not the first time I have gotten confused on what a question was actually asking and got the question wrong bc I chose the wrong answer. I would greatly appreciate help with figuring out key terms in the questions like this one.
The question is: "A broken fillet weld break test specimen for performance qualification can have no inclusion or porosity larger than ____ in the weld."
Answer 1: 1/4-inch
Answer 2: 1/8-inch
Answer 3: 1/16-inch
Answer 4: 3/8-inch
Answer 5: 3/32-inch
The correct answer is: Answer 5.
My answer was: Answer 4.
Hi, Billy. Good question Item 3 is talking about inclusions added together while item 2 is talking about a single indication. Item 2 is what we go with since that language matches the question. 👍
ok thank you.