Dear Friends
Pls provide best possible clarification/definition asap
Code- AWS D1.1 Year 2010
The omission, but no inclusion, of backing or backgouging
1st i prfer to break it up
1- Omission of backing or backgouging- If PQR qualified with backing ( backing weld/backing strip/metallic strip) or...
Dear Experts
Onsite AC & DC current used- Root using LB52U x AC for better penetration- 1 WPS(AC) & Fill/Cap- using LB52 x DC using another WPS(DC).Weld Process-SMAW
So 2 diffrernt WPS with varying AC/DC Variables used for welding this T-K-Y Joints.
Based on Table 4.5 # 13- straightway it is...
Base Material - ASTM A131- EH36 x 25.4mm (Thk) x Single V
Weld Process - SMAW / Weld Position - 3G-Uphill
All Mechanical Tests & Impact Testing( -20 deg celcius ) passed. But Hardness Value exceeds allowable range
Query:-
1) Is it mandatory( AWS D1.1 / ASME Sect IX )to conduct Hardness Test?
2)...
Dear Sir
Presently I have qualified PQR with Single V welded in 3G Position
Undergone all reqd mechanical test including Impact Test at -20 deg celcius succesfully.
Base Mat- ABS Grade EH36 x 25.4mm Thk.
Filler Metal used - Kobelco LB52-E7016.
QUERY:-
Based on Table AWS D1.1-Ed 2008-4.5 # 31-...
Dear Friends
AWS D1.1Ed-2008-4.1.3.2-Period of Effectiveness
1) Code clearly says tack-welder's qualification valid indefinitely for the process and positions qualified for.
2) We also use "Low Levy 3G-SMAW-max. thk qualified is 10mm" qualified welders as tack-welders only. Their qualification...
Dear Friends
Applicable Codes - ASME Section IX & ASME B31.3
Weld Process - GTAW / SMAW
Test Positions - 2G & 5G separately
Base Material - API 5L X65Q x 30mm thk.
I have to know acceptable Min. / Max. Hardness Value after PWHT. Client Spec refer NACE MR 0175 which i dont have
Can shine some...
Dear Friends
Possible Weld Process want to weld Tubular Tube to Flange-Butt
1) Please send Properties of B16.47 A-Series 900.
Weld Process - GTAW x SMAW / or GTAW / FCAW or FCAW.
Appreciate if someone advise suitable consumable.
Thanks
Ganesan
Dear Friends
Weld Process - SMAW
We have 6G welders qualified - using F4 & F5 Filler Metal groupings.
Q1 - Can My F4 welder weld stainless Steel base meterial ising F5 Filler Metal?
Q2- Is my Welder qualified with F5 Filler metal qualified to weld using F4 to F1 Filler Metals
Appreciate...
Dear Friends
I was asked to prepare WPS for Duplex Stainless Steel varies from 1" to 8" x Min Thks 5mm to 38mm.
Impact Value -40 deg celcius
Process - ROOT and Hot pass - GTAW / Fill & Cap-SMAW
Pls guide me in preparing Proposed WPS complyimng to ASME Sect IX-QW-403.6 & QW-451
Thanks
Dear Friends
I want guidance in qualifying PQR
Applicable Code AWSD1.1.
6GR Test Position- API 5L X52 Pipe used( Group II- Impact Test Reqd.)
Question -
1) Is it mandatory to do mock-up test?
2) Is there any base material limitations for preparing macro specimen.
Thanks
Dear Friends
Applicable Code- AWS D1.1. tEST pOSITION -6GR.
1)For full Mech. Test/Impact Energy-6GR-Mat. API 5L X52-Group II Mat used
2) For Macro - EH36-Group Material II used. In which clause as per AWSD1.1 it is allowed?
Appreciate prompt answer
Dear Friends
Applicable Code - AWS D.1.1- Sect 4 Part B-Table 4.8.
In Module Skid Fabrication European Steel- S355JR, S275JR,A355JO used( Unlisted Material in AWS D.1.1).
Is it right/appropriate to use WPS/PQR Qualified using EH36 as base material?
If acceptable, pls advise ref. section of the...
Dear Friends
Base Material - CS & SS - Process Piping - Dia range from 2" to 6". Weld Porcess - GTAW(Root) SMAW (the rest ).
Based on what I've understood above code does not call for MPI/LPT on Butt/Girth Welds. I've done RT as as required in Project approved NDT Plan. Can some one guide to...
Dear Friends
Project - Conversion of Tanker Vesel into FPSO Platform
Material Group 1- ASTM A106-B x 6" x 21.95thk ( Process Piping )
Weld Process - GTAW / SMAW. Applicable Code-ASME B31.3
Upon completion of PWHT/Hardness Test , RT Done- It passed. Did not do MPI.
The purpose of MPI is to detect...
Dear Friends
Process Piping - Carbon Steel Piping - 6" Sch XXS ( 21.9mm )- PWHT done on the same butt joint twice. RT done after 1st PWHT-It passed.Is it acceptable to ASME B31.3?
What harm done to the joint ( weld metal & HAZ ) undergone PWHT twice, in terms of Mechanical Properties.... etc.
Thanks
Dear Friends
We need to qualify PQR the above. Appreciate advise on suitable consumables and welding parameters. Weld Process - GTAW/SMAW.Normally we prefer to use Kobeloco /Esab Consumables.
Thanks in advance
Dear Friends
Curently we are engaged in building new Semi-Submersible classed to DNV. We have for Piping GTAW/SMAW PQR Qualified to ASME IX / ABS Rules. Attending DNV Surveyor insist on using Consumables approved by DNV Class.
SFA 5.28 - ER80S-Ni1 for GTAW used in the PQR
Is there such...
Dear Friends
As per AWS D1.1-2008- Welder's certification do not have expiry date unless
1) Not welded in process/position exceeding 6 months or due to poor performance.
Back in our yard, respective section will prerpare welder performance record indcating projects involved inclusive process and...
Dear Friends
I need your help in understanding AWS D1.1-2008 Table 3.1-Note 1 which provide Options in selecting right consumable
1)Filler metal matches higher strength of base material
2)Filler metal matches lower strength of base material
I need to weld Group I - Mat Grade D x Group Material...
