[MW:1675] Re: Buttering on Plate

Dear Pradeep,
Its not practical for your application to make the buttering of 55mm. Its very difficult for the welder to weld a buttering of 55mm.
Since it is tank fabrication you can make finishing for the buttering by grinding only.
In code there is limitation to buttering length which depend upon thickness.
Regarding the testing of buttering you can carry out Ultrasonic Testing for full volume.
Magnetic particle testing for linear indications on surface on either sides.
 Penetrant testing for rounded surface indicattions.

I hope this will help you...

Regards,
Nilesh Pathare

On Sat, Feb 28, 2009 at 12:26 PM, pradeep kumar hormis <pkhormis@gmail.com> wrote:

Dear All!!!

 

We are doing some Tanks as per API 650. In one of that tank ,we faced a problem like shortened the lingth of plate..and JOINT GAP became more than the required 'Root gap'. Almost   "55mm" we got .So we thought about 'Buttering'. But in API 650 not mentioned any thing about 'buttering'. So which standard we have to follow for it, and what are the test we have to conduct over there.

 

There was no PWHT as per WPS,Pre heat was only upto 40 ^0 C.

 

plate thickness is 23.4mm- 'Double 'v' groove' , ASTM 573.GR 70.

--
PRADEEP KUMAR HORMIS

--
Best Regards,

Nilesh Pathare

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