Re: [MW:6362] query regarding ASME SEC IX

see reply below

On Sat, Aug 7, 2010 at 1:59 PM, asad azmi <azmiasadayub@gmail.com> wrote:

Dear All,

 

Greetings.

 

 I  have to reveiw a WPS which involved welding by SMAW process.  WPS  has two filler metals E6010 and E7018 mentioned seprately in filler metal section(QW-404).WPS dont require any impact testing. WPS has note - this WPS is qualified with and without PWHT.

 

three PQR are supporting the above WPS. Detailed as below.

 

1) PQR  is welded by using base metal, P1G1 TO P1G1(SA 516 GR 60 TO SA 516 GR60)  . filler metal  used is E7018. Thickness of base metal used for PQR Qualification is 10 mm. impact testing is done for this PQR.

 

 

2) ) PQR  is welded by using base metal, P1G1 TO P1G1(SA 516 GR 60 TO SA 516 GR60)  . filler metal  used is E6010. Thickness of base metal used for PQR Qualification is 10 mm. impact testing is done for this PQR. Also PWHT is carried out at 1150 deg. F for 6 hours.

 

 

3) PQR  is welded by using base metal, P1G1 TO P1G2(SA 516 GR 60 TO SA 516 GR60)  . filler metal  used is E7018. Thickness of base metal used for PQR Qualification is 10 mm. impact testing is done for this PQR. Also PWHT is carried out at 1150 deg. F for 8 hours.

 

 

my question is

 

1) whether the above WPS can be accepted based on the 3 supporting PQR'S.

No, What is your job requirement? it is always recommended to prepare separate WPS for with/without PWHT. Your Production guy  or who ever may be the end user should understand the requirements clearly.  

 

2) Whether A SINGLE WPS can be qualified with and without PWHT by supporting  PQR'S with and without PWHT.

 No (refer above 1)

 

3) What will be the thickness range qualified based on the actual thickness of base metals used in PQR Qualification. i think qualified base metal thinkness range will be 10 to 20mm as impact testing is done.

 

but if your job requirement doesn't call for impact, you can use it from 1.5-2T 

4) whether two diffrent filler metals such as E6010 and E7018 can be mentioned on single WPS. 

 

yes if supporting qualifies for it (in your case E6010 does not qualify for without PWHT) 

5) Whether WPS without impact testing and PWHT can be qualified with PQR having impact testing and PWHT.

 yes

6) Whether the above WPS  can be used for welding any ASME P1G1 Material together or to an ASME P1G2 material as required.

 yes, but within the 1.5 - 2T range (remember only when you don',t need CVN impact on job)  and with PWHT

 

Awaiting your valuable reply.

 

Thanks in advance.

 

Regards

 

Asad Azmi

 

 

 

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