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Hi UKMET, [wavey2] ASME IX is a general code and is not comprehensive code for special job such as sour service. Sour service job need more engineering/corrosion consideration and i recommended that do your job based on sour service specification. severity of fluid and amount of...

Hi Isildur78[wavey3] At first you shall check the record sheets of PQR. If the parameters recorded correctly you can follow them without problem. Appearance of weld pass mostly affected by welding speed, weaving,etc which controlled by welder in manual welding. By considering the range of...

Hi Jon Ives[wavey2] API 5L is a reference for the technical specification of pipe in petroleum and natural gas transportation and has nothing to do with the flange. at the first you shall refer to project/client specification, by reason of that flange body and face repair is not allowed in...

Hi,wavey2 Heat treatment of Plate or pipe mentioned as "Delivery Condition" in API 5L and details are at the option of manufacturer and temperature range and rate have not mentioned. according to App.B heat treatment procedure include in MPS. in item 8.8 for EW & LW pipe stated that procedure...

Dear Ali,[wavey] salam Kindly find below notes: 1-length and number of test coupon shall consider in PQR preparation. 2-At the first you shall refer to project specification. if there is note any note in spec refer to related welding code./standard such as AWS D1.1/ASME IX ,ISO 15614. 3-ASME...

Hi Tmoose ,[wavey2] Increasing of the tensile strength of material and welding consumable may be increase the hardness but this is not general rule and tensile is not the only parameter. there is several material with different chemical composition with same Yield strength range...

Thanks for your advise HTURKAK LittleInch SJones

Thanks Littleinch,[tiphat] I mean API570,

Hi[wavey2] There are some standards for in service inspection in ASME and API for piping ang piping component. Is it possible to use these standard for Pipeline? Thanks for your advise.

[wavey3]

Hi [tiphat] QW-482 just is a suggested WPS format. you can choose yes or no if you have/have not a pass with thickness more than 13mm. the technical subject related to essential variable in table QW-253,QW-254 and related description in QW-403.9 Based on QW-403.9 if thickness of pass is...

Hi, If you obligated to perform metallographical examination, in-situ metallography may be possible check with laboratory expert.

Hi rbradshaw2021,[peace] Heat Treatment of Pipe mentioned as "Delivery Condition" in API 5L. this heat treatment may performed during plate manufacturing. pipe forming or heat treatment of produced pipe which stated in plate/pipe documents and included in Pipe grade designation. for instance...

Hi MrPSK[peace] At first check spec/std requirements and related essensial variable for welder qualification. If your reference is API, it is too easy just surch it??!! According to API 1104, material group is not essential variable and if you meet other variable welder qualification is not...

Hi everybody[peace] There is not acceptance criteria about tungsten inclusion in radiography. It seems that 1104 just recognize 6010 and 7010 for root and hot. Please help me on this subject. Best Regards,[lookaround]

Hi, It shall be consider that diameter tolerance and ovality are different subjects. In some case ovality may be accepted but diameter is out of range. So Refer to meaning of ovality. Best Regards,

Hi, 56mm thickness of base metal dose not qualified by your PQR even if it welded partially. Thickness of material affect on cooling rate of weld, heat sink, preheat,etc. So it is consider as essential variable.

Thanks DekDee

Hi DekDee, we have two kind of joints: 1-Pipe to Pipe (Groove weld, Butt joint single V) 2-Olet to Pipe (Groove weld, butt joint half single V) we want to support both by Pipe to pipe PQR. (without any V <===> U) Thx

Hi [wavey2] According to API 1104 5.4.2.3, "A major change in joint design(e.g from V groove to U groove) constitute an essential variable". Question: if we have a PQR with single V butt weld (weld type:groove,Joint type:butt)is it possible to support welding of a joint below? weld...