Definition of TKY joint

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Arun

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Nov 25, 2018, 1:22:24 AM11/25/18
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What is the actual definition of TKY joint, please help me

munee...@gmail.com

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Nov 26, 2018, 10:28:04 PM11/26/18
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Check Fig 3.7, 9.11 to 15 of AWS D1.1.

Check attachment for futher information.


Regards,
Mohamed Muneeb Mahaboob
CSWIP 3.2-89247/2 
ASNT-NDT-L2-RTFI-RT-UT-MT-PT.
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Ramesh

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Nov 27, 2018, 12:14:13 AM11/27/18
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Hi Arun


Some basic explanation as per my experience.

 

Like in pipe 6G position weld, you will have flat , vertical and overhead welding positions,

 

Like same way , for tubular connection joints, you will have connections like T joints, K joint & Y  joints in one situation, based on you profile, angles etc...( Branch connections )

 

If you look from bottom you will find T shape, side way look like K shape ( when two tubular joints occurs) and from top you will find Y shape. Hence it’s called TKY joint.

 

It is most difficult welding in off shore modules.

Since dihedral angle is less than 30deg and very difficult to pass root run welding.

 

Only 6GR qualified welders can weld and clear inspection requirements.

 

Clearing UT and Macro is very difficult unlike other joints.

 

 

image.png
image.png
image.png

 

 

 

Pl Refer AWS D1.1 – Section 9. Tubular Structures requirements.

 

Part C, Clause 9.15 & 9.16 for WPS requirements

Part D, Clause 9.19 & 9.20 for WPQ requirements

Part F, Clause 9.30 for inspection requirements.    

Thanks and Regards


Rameshkannan Devaraj

"What you have learned is a mere handful; What you haven't learned is the size of the world – Avvaiyar"


Arun Padman

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Nov 27, 2018, 12:50:07 AM11/27/18
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Dear all,

Can I consider the below one as a TKY joint, the connection with a pipe and a plate

IMG_20181124_160255.jpg
IMG_20181124_160214.jpg

Regards,

Arun Padman Manayil



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Mayur Hiremath

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Nov 27, 2018, 5:17:33 AM11/27/18
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Dear Arun,
All tubular branch connections are TKY joints, (example pipe to pipe). 
The pic shown is not TKY connection. 

Regards, 
Hiremath. 

Ramesh

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Nov 27, 2018, 6:15:41 AM11/27/18
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Hi Arun 

Yes its TKY connection type only (  i.e Fillet Welds for Tubular Connections )

Pl refer Fig 9.21 & Table 9.14 for fillet weld qualification requirements ( Option 3 )

image.png
image.png
image.png
 
Hope it clarifies your doubt. 

Thanks and Regards


Rameshkannan Devaraj

"What you have learned is a mere handful; What you haven't learned is the size of the world – Avvaiyar"


Dương Vinh Quang

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May 5, 2023, 11:35:49 PM5/5/23
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HI brother,
I want to ask you about TYK joint on AWS D1.1. Can you help me by email: duongvin...@gmail.com. Pls help me

Vào lúc 12:14:13 UTC+7 ngày Thứ Ba, 27 tháng 11, 2018, Ramesh đã viết:

Vinay

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May 8, 2023, 9:19:58 AM5/8/23
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