How to review welder qualification in accordance with ASME section 9
Вставка
- Опубліковано 18 жов 2024
- Backing: Removing the backing is an essential variable; it means if your welder qualified with a test coupon with butt welding and subsequent back welding cannot weld a job without back welding (he can only do welding when there is backing on it)
Pipe Diameter: The limitation for pipe diameter addressed in QW-452.3. The welder who qualified in 6 inch pipe cannot weld a 2 inch pipe. He can weld till 2 ½ and not less than that. Other example that is that when a welder is qualified by 1 ½ inch pipe, can weld min 1 inch and max 2 ½ inch.
P number: The limitation for P number addressed in QW- 423, for example a welder who has been qualified in base material with P number1 thru P number 15 F can weld anything in between. This might be a little confusing because it says if a welder qualified in carbon steel with P number 1 can weld a stainless steel material with P number 8 which we know this is not possible. The point is that when you reviewing the essential variable you should consider them cumulatively. Based the P number variable he can weld but based on F number variable he cannot weld. So make sure you are considering all essential variables and each of these variables have veto power.
F number: The F number variable requirement has been addressed in the QW- 433. For example if a welder qualified with SMAW process with E 7018 for carbon steel material cannot weld with the E-308 Electrode in same SMAW process. The F number for E-7018 is 4 and for E-308 is 5 and 4 cannot cover 5 based on the QW-433 requirements.
t weld deposit: Any welder qualified in plate or pipe above ½ inch with minimum 3 layer can weld unlimited. This is different from PQR and most people confusing between these two.
Position: The welding position is one of important essential variable in welding performance qualification. The requirement addressed in QW-461.9. Normally a welder who qualified in 6G position can weld all positions, or alternatively if he qualified in one 2G and one 5G can weld every other position.
Please note the essential variable is different from one process to other process
#Welder #ASME #Section9 #WPQR # Qualification #4G #Review #Overhead #BPVC #Inspection #SMAW #ArcWelding
For more information please contact
weldinginspect...
You can get in touch me by using
E-mail: aravindkm002@gmail.com
LinkedIn: / kmaravind
Its a good and knowledgeable video on WPQ
You may correct in supporting document under position paragraph as QW461.9 against mentioned QW469.1
And please put two videos for freshers like me.
1. Detail video step by step for making WPS, PQR, WQR.
2. and daily routine of a welding inspector on duty in detail with some tips to be a better inspector.
Thank you.
Hi, this is available on my UA-cam channel ASME Adda for Mechanical Engineers. This video covers all stages of WPS PQR WPQ preparation in details.you can refer.
Pipe Diameter: The limitation for pipe diameter addressed in QW-452.3. The welder who qualified in 6 inch pipe cannot weld a 2 inch pipe. He can weld till 2 ½ and not less than that. Other example that is that when a welder is qualified by 1 ½ inch pipe, can weld min 1 inch and max 2 ½ inch.
Dear Sir I have a misunderstanding in your statement " You write here if a welder qualify on 1 1/2 Inch Pipe then he qualify on min 1 inch and max 2 1/2 inch pipe. As per ASME SEC IX QW-452.3 said that he qualified for unlimited.
Overall its a good experience.
yes he is qualified for max diameter. maybe the youtuber misinformed in the video
Very very useful information.
Dear Sir,
Great work, please keep posting videos like this your method of explanation has cleared many doubts.
I have a question if you could answer I would be grateful.
1. If a Welder is qualified for P1 then can he weld Dissimilar metals like P1 to P15f
2. And if a WPS is qualified for P1 to P1 then can it be used for dissimilar metals like P1 to P15f
If all essential variables are the same as same electrode used and thickness etc.
I have got ur mail and will reply back to u in a while .
Thanks for supporting.
Very good explanation
very nice Sir
Sir I have question on PQR
Sir can we use a PQR "which is qualified on Material ASTM A53 Gr.A Process GTAW/SMAW Filler wire ER70 S-6 and E7018" to make a WPS for A106 Gr. B, process GTAW/SMAW filler wire ER 70 S-2 and E7018
Super expansion hope for more good videos
Excellent explanation sir 👍.
Nicely explained, kindly make a video on WPS with initial stages
Please refer to my UA-cam channel ASME adda for Mechanical Engineers. Video on WPS PQR WPQ qualification with initial and all stages is available on this channel.
Clear explanation. Thank you
Thank you
Sir how much min.thickness welder can weld OR he qualified min.thickness limit......If I'm not wrong does he qualify min.13 mm and max.Unlim.....pls.calrify ans.
In section IX for welder minimum thickness is not mentioned. There for the minimum thickness a welder can weld is based on WPS. For example in WPS If the thickness range is given from 1.5 mm welder is qualified to weld 1.5 mm
And multiple of 1.5T if anyoune do welding below 13mm thickness@@ajay_constantine
If a welder qualified during pqr test should we write pqr number or WPS no in WPQ record
Nice bro.. keep going 👍👍
Can you make one video on tube to tube sheet welding with GTAW Process?
Next part didn’t come ?
Very great full sir ji
thank you bro!
Excellent 👌
Nice Sir ji
Very nice
Wonderful ❤️❤️❤️
Thanks
Sir test results when u upload
My doubt is if welder qualified in p no 1 then he qualified and he can weld p no 1 inbetween p15F all the materials?like P4,p8,p5a
Yes. As per code. But not all clients willing to accept it. They need separate qualification
P no. is qualified from 1 through 15F but F no. is also essential varial. If the welder is qualified with P No. 1 F No. 4 so he can not be qualified for F No. 5 which is F no of austenitic materials. I am preparing detailed videos on welder performance qualification which will cover all clauses of article III of ASME Section IX.
ASME Adda for Mechanical Engineers is my UA-cam channel. You can refer this for other topics as well.
Nice One
Please share WPQ sheet for download
Only 7 variables as per SECIX, but you are saying 8 as per QW-353.
My counting went wrong. Sorry.
And thanx for the info
@@weldinginspectionndt7376 Thanks and your explanations nice.
I want to cswip 3.1 exam please give vedio about cswip
Sir, root doot doot Dookie dook?
How to review, WPS with PQR....
Please upload sec 2 part A please please
The videos on section II part A of ASME on materials will be available soon on my UA-cam channel ASME Adda for Mechanical Engineers.
What is SA in SA516 gr70
"S" prefix indicates ASME material SPECIFICATION.
"A" prefix means the material belongs to part A of ASME Section 2.
Spot welding WPS wpqr wow asme
Sir what does backing means ???
Sir please reply 🙏
When you weld a groove in plates and you instructed to put a flat bar between your plates. That is a backing
Very good
THANKS