Dear All,
Thank you for your kind info, I'll check in the EN 288-3, sect.8.3.2.1)
Regards
Ofazni
Dari: GURDEEPSINGH ARORA <gurdeepsarora@yahoo.com>
Kepada: materials-welding@googlegroups.com
Terkirim: Rab, 1 September, 2010 15:38:21
Judul: Re: [MW:6825] Construction Code for Structural Steel (offshore construction)
Dear NORSK M-101 This standard covers the requirements for fabrication and inspection of offshore steel structures with SMYS < 500 MPa and with a minimum design temperature down to -14 °C. For special application steels with SMYS up to 690 MPa may be used. 6.10 Post weld heat treatment (PWHT) PWHT shall be required for structural welds in steel quality level I or II, or quality level III with Re>400MPa, when the nominal thickness (as defined in EN 288-3, section 8.3.2.1) exceeds 50 mm, unless adequate fracture toughness can be documented in the as welded conditions. For restrained joints of complicated design, PWHT may be required for smaller thicknesses, independent of steel quality level. PWHT shall be carried out in accordance with a procedure which shall include: • Heating rate. • Cooling rate. • Soaking temperature and time. • Heating facilities. • Insulation. • Control devices. • Recording equipment. • Configuration of structure to be PWHT or details if local PWHT shall be carried out. • Number and location of thermocouples to be used during PWHT. The holding time and temperature shall be as recommended by the steel manufacturer
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--- On Wed, 1/9/10, sugu puma <pumamy@yahoo.com> wrote: From: sugu puma <pumamy@yahoo.com> Subject: Re: [MW:6820] Construction Code for Structural Steel (offshore construction) To: materials-welding@googlegroups.com Date: Wednesday, 1 September, 2010, 10:43 AM
Dear sir, Post weld heat treatment is compulsory requirement to offshore structures for relief stress concentration, try to review project requirements documents / design engineer,they are requirements from previous offshore structure crack happen in transocean/ensco semi.they normal plate rolling by making tubular for jacket platform AWS D1.1 refer to post weld heat treatment code and material selection section ,
from, M.sugu
From: omar fazni <ofazni@yahoo.com> To: materials-welding@googlegroups.com Sent: Wed, September 1, 2010 12:45:17 PM Subject: [MW:6819] Construction Code for Structural Steel (offshore construction) Dear All, I would like to request information of any construction code that is applicable for offshore construction (structural steel), is there any code that determines PWHT requirements with regards of the material Thickness??. For example, we're going to use a 2" tubular materials for offshore structural construction, is there any construction code saying that it has to be PWHT?? I've been looking in AWS D 1.1 and it stated that there are no requirements, except written in the contract Please correct me if I'm wrong Thank you & Regards Ofazni -- 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. -- 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.
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