QW403.5 ASME SEC IX

[Vikas Bhandari]

Dear all

If I have a WPS with P1G1 to P1G2, is it qualified to weld P1G1 to P1G1 and P1G2 to P1G2?

I am not clear what QW403.5 states. Pls correct my interpretaion of the section.

 This is my interpretation:-

QW 403.5 

For ferrous materials in table QW/QB-422, a procedure

qualification shall be made for each P-Number Group Number

combination of base metals, even though procedure

qualification tests have been made for each of the two

base metals welded to itself. 

(Is both P numbers and group numbers changing in this case (eg. P1G1 TO P2G2) or is only the group number is changing P1G1 to P1G2?

Assuming the first scenario, if one has 2 WPS 

1. P2G1 to P2G2

2. P1G1 to P1G1  

then also one needs to qualify a procedure for P1G1 to P2G1, which is obvious as change of p no. is an essential variable)

If, however, two or more

qualification records have the same essential and supplementary

essential variables, except that the base metals

are assigned to different Group Numbers within the same

P-Number, then the combination of base metals is also

qualified.

Assuming  if one has 2 WPS 

1. P1G1 to P1G1

2. P1G2 to P1G2  

then  for P1G1 to P1G2 combination is qualified by the above two WPS,

 In addition, when base metals of two different

P-Number Group Number combinations are qualified using

a single test coupon, that coupon qualifies the welding of

those two P-Number Group Numbers to themselves as well

as to each other using the variables qualified.

Assuming  if one has one WPS 

1. P1G2 to P2G2

 

then  the following 2 combination are also qualified by the above WPS,

1. P1G2 to P1G2

2. P2G2 to P2G2

3. P1G2 to P2G2

This variable does not apply when impact testing of the

heat-affected zone is not required by other Sections. 

QW 403.5 APPLIES only when impact testing of HAZ is required by other sections?

back to my original question, I think even if I have a WPS FOR P1G1 to P1G2, I would need to qualify a wps for  to weld P1G1 to P1G1 and P1G2 to P1G.

Your comments in this regard would be much appreciated.

Best regards

[John Henning]

You are correct.  A test coupon consisting of P1G1 material welded to P1G2 material will qualify welding P1G1 to P1G2, P1G1 to P1G1, and P1G2 to P1G2.  The portion of QW-403.5 highlighted in purple applies to the situation.  It is common practice to qualify P1G1 to P1G2 to cover welding with impacts for all common P1 materials (G1 and G2).  Note that SA-516 Grade 70 material will often be dual certified as SA-516 Grade 65 and/or Grade 60.  In this case you only need to use this one material for test plates to get your combination.  This is discussed in Interpretation  IX-92-70:

 

 

John

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[george....@gr.bureauveritas.com]

if there is an impact test requirement the group number is an essential variable
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

---

[PREM SHANKARDUTT NAUTIYAL]

Hi

I support the reply given by Mr.John Henning.

Also there is no " P2 " material in ASME.

Regards

Prem Nautiyal

On Tue, 18 Jan 2011 23:07:24 +0530 wrote
>Dear all
If I have a WPS with P1G1 to P1G2, is it qualified to weld P1G1 to P1G1 and P1G2 to P1G2?I am not clear what QW403.5 states. Pls correct my interpretaion of the section. This is my interpretation:-

QW 403.5 For ferrous materials in table QW/QB-422, a procedurequalification shall be made for each P-Number Group Numbercombination of base metals, even though procedure
qualification tests have been made for each of the twobase metals welded to itself. (Is both P numbers and group numbers changing in this case (eg. P1G1 TO P2G2) or is only the group number is changing P1G1 to P1G2?

Assuming the first scenario, if one has 2 WPS 1. P2G1 to P2G2
2. P1G1 to P1G1  
then also one needs to qualify a procedure for P1G1 to P2G1, which is obvious as change of p no. is an essential variable)

If, however, two or morequalification records have the same essential and supplementaryessential variables, except that the base metalsare assigned to different Group Numbers within the same
P-Number, then the combination of base metals is alsoqualified.Assuming  if one has 2 WPS 
1. P1G1 to P1G12. P1G2 to P1G2  
then  for P1G1 to P1G2 combination is qualified by the above two WPS, In addition, when base metals of two differentP-Number Group Number combinations are qualified using
a single test coupon, that coupon qualifies the welding ofthose two P-Number Group Numbers to themselves as wellas to each other using the variables qualified.Assuming  if one has one WPS 

1. P1G2 to P2G2
 then  the following 2 combination are also qualified by the above WPS,

1. P1G2 to P1G22. P2G2 to P2G2
3. P1G2 to P2G2
This variable does not apply when impact testing of theheat-affected zone is not required by other Sections. 

QW 403.5 APPLIES only when impact testing of HAZ is required by other sections?
back to my original question, I think even if I have a WPS FOR P1G1 to P1G2, I would need to qualify a wps for  to weld P1G1 to P1G1 and P1G2 to P1G.

Your comments in this regard would be much appreciated.
Best regards

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>
To post to this group, send email to material...@googlegroups.com
>
To unsubscribe from this group, send email to materials-weld...@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.
>

PREM S NAUTIYAL
CELL : 9769316004

[manpreet]

Dear Vikas,

If you qualify your PQR with P1 Gr.1 material to P1 Gr.2 and get both material's Haz impact tested, then you can qualify WPS with
               * P1 Gr 1 to P1 Gr 1
               * P1 Gr 1 to P1 Gr 2
               * P1 Gr 2 to P1 Gr 2
(If you don't want to impact test both HAZ, use material which is dual certified as SA 516 Gr 60/70)


but if you have PQR qualified with P1 Gr 2 to P1 Gr 2 then you can't use * P1 Gr 1 to P1 Gr 1
                                                                                                         * P1 Gr 1 to P1 Gr 2


Hope this would be useful.

Regards
Manpreet Singh






On Tue, 18 Jan 2011 22:32:32 +0530 Vikas Bhandari wrote