golden weld joint require ments
Gulam kader
can any one explain the golden joint welding , NDT and inspection requirement with Code references.
Regards,
Gulam Kader
muthu barathi
Golden Joint mean Tie in Joint.normally it will come on Piping final
joint . in this joint after welding you can not test hydrostatic test.
So you have to go for double NDT for volumetric such as RT / UT and MPT
/ DPT . After successful carrying out these test you can release the
joint for charging lines.
On Sat, 30 Oct 2010 12:45:30 +0530 wrote
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Dear Sir,
Thanking You,
Honesty is the best Policy
With Warm Regards,
P Muthu Barathi
Mobile No:09967300544
 |
T. Mahendran
Mr Gulam
I could remember the following things for Golden weld.
a) It means , other than of fabrication shop welding, the balance welding which will be done with only one joint at site welding( or) in a tie -in work process. This type of joints are confirmed by 100% RT or UT (NDT), since there may be a practice problem in the hydro test depends with the pipe length.
b)There is no specific code for Golden joint but most of the companies are follow to perform a "golden weld", with 100% NDT by eliminating hydro test.
c) We can refer ASME 31.4, and it permits a "waiver" of a hydro test on “tie-in” welds between two sections of piping , that the weld has already undergone 100% NDT (see Section 437.1.4 (b) Testing Tie ins, ASME B31.4 2002 Edition).
T.Mahendran
KSA
From: Gulam kader <arm...@gmail.com>
To: material...@googlegroups.com
Sent: Sat, October 30, 2010 9:42:49 AM
Subject: [MW:7933] golden weld joint require ments
lakshman kumar
Dear All,
In pipe line activities the joints which are not hydro tested are generally referred as golden joints.
These joints will come especially making tie-in’s of for 2 hydro test of sections.
I was experienced with the section as follows….
100 % NDT Is must in this case.
Option 1
1. Root 100% DPT
2. Every layer of weld with 100%DPT.
3. Final run 100% DPT.
4. 100 % UT.
Option 2
1. Root 100% DPT
2. 100 % RT
This is my personal experience
Thanks & Regards
Lakshman kumar.B |
Manager - QA/QC | LANCO INFRATECH LIMITED
Plot# 1255 |
Sanjeevani Chowk | Mahanadi Vihar |
Cuttack 753004
Phone : + 91-671-2445033| Mobile: +91 9937286851 | www.lancogroup.com
Go Green |The future will thank you
Clubb, Archie
A
From: material...@googlegroups.com <material...@googlegroups.com>
To: material...@googlegroups.com <material...@googlegroups.com>
Sent: Sat Oct 30 08:37:06 2010
Subject: Re: [MW:7934] golden weld joint require ments
Golden Joint mean Tie in Joint.normally it will come on Piping final
joint . in this joint after welding you can not test hydrostatic test.
So you have to go for double NDT for volumetric such as RT / UT and MPT
/ DPT . After successful carrying out these test you can release the
joint for charging lines.
On Sat, 30 Oct 2010 12:45:30 +0530 wrote
can any one explain the golden joint welding , NDT and inspection
requirement with Code references.
Regards,
Gulam Kader
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decisions w.r.t. applicable code/standard/contract documents.
>
Thanking You,
Honesty is the best Policy
With Warm Regards,
P Muthu Barathi
Mobile No:09967300544
|
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Dr. Paulose John
Dear Mr. Khader,
If you are looking for 'Golden welds' you may not find it in any codes because it is a slang used in the industry. Look in para 345.2.3 (c) of B31.3:2006, you will find 'Closure Welds'. That is it.
The requirements are 'in-process inspection' as given in para 344.7 plus RT or UT. Please do not forget to generate suitable reports to all steps given in 344.7.1 to satisfy the purchaser.
Always remember that NDT is not an alternative for Pressure test.
Regards,
Dr. Paulose John
QA/QC Manager,
Unisis engineering,
Saudi Arabia.
On Sat, 30 Oct 2010 14:00:14 +0530 "T. Mahendran" wrote
>
Mr Gulam
I could remember the following things for Golden weld.
a) It means, other than of fabrication shop welding, the balance welding which will be done with only one joint at site welding( or)in a tie -in work process. This type of joints are confirmed by 100% RT or UT (NDT), since there may be a practice problem in the hydro test depends with the pipe length.
b)There is no specific code for Golden joint but most of the companies are follow to perform a "golden weld", with 100% NDT by eliminating hydro test.
c) We can refer ASME 31.4, and it permits a "waiver" of a hydro test on “tie-in” welds between two sections of piping, that the weld has already undergone 100% NDT (see Section 437.1.4 (b) Testing Tie ins, ASME B31.4 2002 Edition).
T.Mahendran
>KSA
From: Gulam kader <arm...@gmail.com>
>To: material...@googlegroups.com
>Sent: Sat, October 30, 2010 9:42:49 AM
>
>Dear all,
>
>can any one explain the golden joint welding , NDT and inspection requirement with Code references.
>
>Regards,
>
>Gulam Kader
> --
>To post to this group, send email to material...@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.
>
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>To post to this group, send email to material...@googlegroups.com
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>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.
>
abdou
Paidi
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345.1 Required Leak Test
pneumatic leak testing impracticable, the alternative
specified in para. 345.9 may be used if both of the following
conditions apply:
(1) a hydrostatic test would
(a) damage linings or internal insulation
(b) contaminate a process that would be hazardous,
corrosive, or inoperative in the presence of moisture
(c) require significant support modifications for
the hydrostatic test load or
(d) present the danger of brittle fracture due to
low metal temperature during the test
(2) a pneumatic test would
(a) present an undue hazard of possible release
of energy stored in the system or
(b) present the danger of brittle fracture due to
low metal temperature during the test
(d) Unless specified in the engineering design, lines
open to the atmosphere, such as vents or drains downstream
of the last shutoff valve, need not be leak tested.
The following procedures and leak test method may be
used only under the conditions stated in para. 345.1(c).
345.9.1 Examination of Welds. Welds, including
those used in the manufacture of welded pipe and fittings,
that have not been subjected to hydrostatic or
pneumatic leak tests in accordance with this Code, shall
be examined as follows:
(a) Circumferential, longitudinal, and spiral (helical
seam) groove welds shall be 100% radiographed in
accordance with para. 344.5 or 100% ultrasonically
examined in accordance with para. 344.6.
(b) All welds, including structural attachment welds,
not covered in (a) above, shall be examined using the
liquid penetrant method (para. 344.4) or, for magnetic
materials, the magnetic particle method (para. 344.3).