IS IT POSSIBLE TO MAKE SPLIT TEE BY CUTTING ORDINARY TEE

[afzal ahmed]

Dear Friends please Help me ,

 

We need Split Tee of 6"(SMLS SCH 40 ASTM A234 GR WPB) , but it is not available in market easily ,

1: Is it possible to make Split Tee by cutting ordinary Tee vertically

2: if Yes, then in which STD it is telling

3: & what are the NDT requirements

 

for more clarification See the attached file

 

its very urgent .....

 

 

[Umar Rashid Makrani]

If you have a tea of ASTM A234 and you cut it into 2 halves. The material is still ASTM A234 so I believe this can be used.

 

With Best Regards,
Umar Rashid Makrani, PMP® ,

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[abdulrauf1947]

Either get approval from client or get its approval from design and proceed .

.... No issue
Regards; ar

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[afzal ahmed]

WHAT ABOUT  THE NDT REQUIREMENTS?

[afzal ahmed]

But on what basis client will approve it?

which STD?

[Umar Rashid Makrani]

My apologies for a wrong spelling,

I my idea was that if a material is manufactured A234 it will remain A234 even after you cut it, I don't think we need to look for a code citation. Regarding the NDT if its cut by machining no NDT is required again however as per the need the edge of the new half tee can be tested by PT to ensure that its defect free and suitable to weld.

 

With Best Regards,
Umar Rashid Makrani, PMP®

[afzal ahmed]

what about after welding ? which NDT method we need to follow ?

[Mohan q8]

Dear Afzal,

 

Need further details about the pupose of spilt tee.

 

In gneral if you want to use the splilt tee for hottap/tie-in purpose you need to split in horizondal portion of the tee.

Moreover, if your want to use the spilt tee over the pipe you cann't able fit it properly due to ID of the tee will not match with OD of the pipe and also you will find gap between halfs after fit-up.

 

Welding & NDT:

 

In case of welding Spilt tee over the pipe, it will be welded with backing strips.

 

Root/first pass - DPI

Final - MPI

Test - Hydrotest of stub.

 

 

 

On Mon, Feb 9, 2015 at 11:14 AM, afzal ahmed <afzala...@gmail.com> wrote:

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With Regards,

Mohan, Q8.

[afzal ahmed]

Actually we had constructed  storage tank of  MOLTEN NAPHTHALENE . so we need to Tie in with existing napthalene pipe line and for jacketing of SS pipe line coming from napthalene tank .

[afzal ahmed]

We recieved Split tee. but the ID of split Tee is the OD of existing pipe . same thing u told before .....

On Wednesday, February 11, 2015 at 5:27:34 PM UTC+3, redbull wrote: