asme section 9 is also called section IX. it is the qualification for welders for pressure pipe and vessels. it covers both brazing and welding and it is pretty much the industry standard for testing of pipe welders for power plants and such.
WPS does not provide dimensional allowances for joint design.
Piping codes address engineering design.
ASME B31.1, B31.3. are the primary piping codes and give the dimensional tolerances for
piping alignment.
Generally your Construction Procedures should address all code requirements with adequate
figures, (drawings). The Construction Procedures are taken directly from the applicable code and should reference the page, drawings etc. that they were taken from. Shop and field fabrication and welding of pipe will be delineated in a Pipe / Welding Fabrication Procedure
These Construction Procedures are generally approved by QC before the start of construction. These Construction Procedures are provided to the field engineers, inspectors,
foreman etc who need them to do their work. These Construction Procedures are much easier
to use than the code book they were taken from.
Gene Matsko
On Wednesday, January 2, 2019 05:11:58 AM CST, muneebslsa@gmail.com <muneebslsa@gmail.com> wrote:
Dear,
cherry picking section IX, which is never mentioned?
nothing mentioned? but it directs and also clears for branch connections.
More over its just a broad understanding of joint designs as per ASME B 31.3, 1 and B 16.25, which states in alignment (a) Circumferential Welds (1) Inside surfaces of components at ends to be joined in girth or miter groove welds shall be aligned within the dimensional limits in the WPS and the engineering design.
A broad understanding with easy go, but still its a designer / welding engineers choice.
Thanks.
Regards,
Mohamed Muneeb Mahaboob
CSWIP 3.2-89247/2
IRCA-9001:2015 LA
ASNT-NDT-L2-RTFI-RT-UT-MT-PT.
SAP#:70021650 APs:JAPID, QCS & QCI.
''If you know any art by any means then SCULPT IT - no matter how cheap or useless it is - JUST SCULPT IT, you will never know when experts will be on demand''
From: Hisham Al-MetwallyDate: 2019-01-02 11:37Subject: Re: [MW:28851] Re: Calculation for root gap according to tihckness of pipe--Dear Mohd,There is nothing mentioned in ASME IX or B31.3 codes regarding the gap calculation. It completely depends on the WPS/PQR.On Tue, Jan 1, 2019 at 2:38 PM Mohd Siraj <mohd52100@gmail.com> wrote:Root gap is not depend on pipe size or thickness,indeed it is based on process to be used for welding.--GTAW-4-5mmSAMW-3.5-4.5mmSAW-1.5-2.5mm
On Friday, July 22, 2011 at 2:17:46 PM UTC+3, abhishek ojha wrote:
Dear Expert,
Kindly guide me how to calculate root gap according tihckness of pipe of different /same dia.(different tickness but same dia)
Thanks & Regards,
Abhishek Ojha
Engineer- Construction
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--Thanks & RegardsHisham Al. MohammadWelding Engineer & QA/QC EngineerMob: +971 56 433 7326 & +971 52 667 9935
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