LIMIT OF WELDER QUALIFICATION OVER DIA. RANGE

[shailesh dave]

DEAR MEMBERS,   I HAVE COME ACROSS AN INTERESTING SITUATION.   WE HAVE WELDERS QUALIFIED IN 6" x 7.11 mm THK. PIPE OFF COURSE BUTT WELD. MY QUESTION IS CAN THESE WELDER PERFORM WELDING OF SMALL BORE PIPE LIKE 3/4" SOCKET WELD.   PL. HELP ME.   REGARDS,   S.N.DAVE   QA/QC INCHARGE ADGAS, DAS ISLAND, UAE

[SENTHILKUMAR SWAMINATHAN]

Refer:  ASME Sec 9, Page 143 GROOVE-WELD DIAMETER LIMITS (See notes 1,2)                                                                                                                          Outside Diameter Outside Diameter Qualified, in. of Test Coupon, in. Min. Max.                                                                                                                          Less than 1 Size welded Unlimited 1 to less than 2 7 /8 1 Unlimited 2 7 /8 and over 2 7 /8 Unlimited                                                                                                                          NOTES: (1) Type and number of tests required shall be in accordance with QW-452.1. (2) 2 7 /8 in. O.D. is the equivalent of NPS 2 1 /2 .   Regards, S.Senthilkumar --- On Wed, 13/8/08, shailesh dave <snd...@yahoo.com> wrote:

Unlimited freedom, unlimited storage. Get it now

[carloso...@terra.com]

YES, YOU CAN TO WELD  ALL FILLET WELD, BECAUSE BUTTWELD QUALIFY ALL FILLET, ASME IX PAR QW-452



On Wed 13/08/08 06:00 , SENTHILKUMAR SWAMINATHAN skuma...@yahoo.co.in sent:

Refer:  ASME Sec 9, Page 143

GROOVE-WELD DIAMETER LIMITS (See notes 1,2)                                                                                                                          Outside Diameter Outside Diameter Qualified, in. of Test Coupon, in. Min. Max.                                                                                                                          Less than 1 Size welded Unlimited 1 to less than 2 7 /8 1 Unlimited 2 7 /8 and over 2 7 /8 Unlimited                                                                                                                          NOTES: (1) Type and number of tests required shall be in accordance with QW-452.1. (2) 2 7 /8 in. O.D. is the equivalent of NPS 2 1 /2 .   Regards,

S.Senthilkumar --- On Wed, 13/8/08, shailesh dave wrote:

[romio dabre]

please write the code? As per ASME sec IX it is not allowed

[shailesh dave]

Dear Romio,   It is ASME SEC. IX.   Regards,   S.N.Dave --- On Thu, 8/14/08, romio dabre <romio...@gmail.com> wrote:

From: romio dabre <romio...@gmail.com> Subject: [MW:1032] Re: LIMIT OF WELDER QUALIFICATION OVER DIA. RANGE To: material...@googlegroups.com

[carloso...@terra.com]

Yes, the welders can to weld all fillet welds because , if  your qualification was buttweld(groove-joint)

carloso...@terra.com

On Thu 14/08/08 07:40 , "romio dabre" romio...@gmail.com sent:

[babu raghavan]

Mr: S.N.DAVE CHECK ASME SECTION IX  QW 451.4.You can see the details.This welder can weld 3/4 " socket weld.   BABU.P.R

--- On Fri, 8/15/08, shailesh dave <snd...@yahoo.com> wrote:

[alireza alavi]

Dear My freinds ,   I need some information , references on the web or code for " double wall isolateted vaccum tanks "  for storage of nitrogen liquid or some things like that such as oxygen , argon ,.....   Best regards Alavi

[shabbir ahmad]

Dear Dave

 

Babu n carlos are right, u can weld any fillet, in any diameter as per QW451.1 if you have qualification as per /qw451.1 n qw 451.2.

 

You can weld in short

 

Shabbir

[Binit Kumar]

Dear Friend,

As per code ,Joint Design- Any Groove,Pipe Diameter-Any,Pipe Thickness-Any.So he qualified any diameter and thickness of fillet weld.

Regards,

Binit Kumar