Monday, March 2, 2009

[MW:1684] Re: 1663] Buttering on Plate

 PKH,

 

1)      With approval from client the shape and dimensions can be deviate within tolerance. (Clause: 3.7.1.8)

2)      Write Technical query request (TQR) and write your proposal and wait for the reply.

3)      As per 5.5.3 radius tolerance (as said by Mr. Siva Subramanian) Ø12000mm to 45000mm max allowable ±19mm in diameter its going to be 38mm. 45000 to 75000mm max allowable is ±25mm in diameter its going to be 50mm, in this case you can use backing strip for welding. Or buttering do RT for Volumetric and UT for Planner type indication.

 

Regards,

 

S.Senthilkumar

--- On Sun, 1/3/09, S SIVASUBRAMANIAN <siva@lntkuwait.com> wrote:

From: S SIVASUBRAMANIAN <siva@lntkuwait.com>
Subject: [MW:1673] RE: 1663] Buttering on Plate
To: "'S SIVASUBRAMANIAN'" <siva@lntkuwait.com>, materials-welding@googlegroups.com
Date: Sunday, 1 March, 2009, 10:33 AM

Correction in below mail Diameter is 25000 mm

 

S. SIVASUBRAMANIAN

QA/QC Manager

Larsen & Toubro Kuwait Construction Company

P.O. Box.1082, Fintas 51011 , KUWAIT

Mobile: 00965 66387188, 00965 94005327

Fax: 00965 66321511

From: S SIVASUBRAMANIAN [mailto:siva@lntkuwait.com]
Sent: Sunday, March 01, 2009 8:02 AM
To: 'materials-welding@googlegroups.com'
Subject: RE: 1663] Buttering on Plate

 

Dear Mr. Pradeep,

 

If it is SHELL PLATE you connect both plate without 55 MM gap, the following will happened

 

Assume your tank Diameter is 25000 Mts., because of your gap adjustment your diameter will decrease around 17 mm from 25000.  and the radius will decrease around 8.5 mm.

 

So, as per API 650, clause 5.5.3 (Roundness tolerance) within the limit.

 

With regards,

 

S. SIVASUBRAMANIAN

QA/QC Manager

Larsen & Toubro Kuwait Construction Company

P.O. Box.1082, Fintas 51011 , KUWAIT

Mobile: 00965 66387188, 00965 94005327

Fax: 00965 66321511

From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of pradeep kumar hormis
Sent: Saturday, February 28, 2009 9:57 AM
To: materials-welding@googlegroups.com
Subject: [MW:1663] Buttering on Plate

 

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



Add more friends to your messenger and enjoy! Invite them now. --~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---

By -

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

[MW:34866] Presentation for WPS ,PQR AND WPQ as per ASME Sec IX in power point

Dear Experts.        If anyone having presentation of WPS,PQR and WPQ  as per ASME  SEC.IX  in power point then please share . Regards Sanja...

  • Materails FAQs
    Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? ...
  • RE: [MW:5585] Buttering of weld joints
    Definition of buttering from ASME Section IX, QW/QB-492 Definitions:   Buttering:  the addition of material, by welding, on one or bot...
  • WELD AND WELDING SYMBOLS
    Section I. PRINT READING 3-1. GENERAL a. Drawings . Drawing or sketching is a universal language used to convey all necessary information to...