Impact Testing requirements for PQR

[Jackson Raj]

Dear all,

In Our project has 3 inch to 24 inch and it's thickness 5.49mm to 45.24mm and Impact Testing required for above thickness.

Please clarify how many PQR are required for this job 

Please consider the Impact Testing also mentioned each PQR thickness qualify 

Regards

JJ

[Ritesh Kumar Singh]

3 PQR required as per your job thickness.

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[Ahmed Osman]

3 PQR's may be sufficient , 6mm (3-12) 10mm (10-20) 23mm (16-46) 

Best Regards ,

ENG. Ahmed Osman

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[srinivas rao]

Number of PQR's Required for the project based on BOQ Is depends on below 

 1.construction code 

2. material types involved in scope

3. MDMT of materials 

4. thickness range for each material type

5. applicable client specification requirements 

6 number welding processes you are going to use  

7. scope and due date for delivery/completion of project 

8. Target for daily production based on your capacity if resources.  

If your construction code is B31.3 for normal piping scope and no client specification restriction on dia & thickness range of qualification you need to qualify 4 PQR'S Max with GTAW, SMAW processes , if another process you want to use additional new PQRs to be derived based on thickness. 

Thanks & Regards,

Srinivas Rao 

Welding Engineer 

 

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[james gerald]

Appreciate efforts and initiative from ENG.Ahmed.

Just to share. 2 PQR's 6mm & 23mm is sufficient.

There is an ASME Interpretation stating PQR qualified on 6mm and higher thickness qualifies in the range from 16mm.  Someone please share the Interpretation.

Thanks & Regards

J.Gerald Jayakumar

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[Ahmed Osman]

Mr. J.Gerald Jayakumar

you mean Interpretation: IX-07-09 ? i think it was mainly asking about splitting of mech. testing , accepted or not ? ( tensile , bend on one PQR and CVN in other one )

Best Regards ,

ENG. Ahmed Osman

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[james gerald]

ASME B31.3 2018 has the requirements for specimen Thickness BM requirements as per below Snap shot.

But in ASME B31.3 BM Thickness requirement for Impact is revised. See below snap shot.

Thanks & Regards

J.Gerald Jayakumar

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[Srinivas Rao]

in addition to above one may consider PWHT requirements if anything applicable as per the design and client spec, if PWHT applicable one may consider additional PQR’s or based on the construction code exemption recommendations PQR's Can be avoided by following pre-heat requirements of the construction code.

Regards, 

Srinivas Rao

[james gerald]

ASME Sec.IX Interpretations.

Thanks & Regards

J.Gerald Jayakumar

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[Jackson Raj]

Dear all

Is it mandatory to do Impact Testing in PQR our clients doesn't approaching to us to do Impact Testing they only required impact Testing in Forging Material Tee and flanges.

That's why we are doing Impact Testing in PQR.

Thanks & Regards

Jack

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[james gerald]

Please provide below details

1. MDMT (minimum Design Metal Temperature)

2. Involved Material Grades like ASTM A105 / 106 Gr.B / 333 Gr.6  etc..

3. Applicable design code Like ASME B 31.3

4. Material thicknesses

Thanks & Regards

J.Gerald Jayakumar

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