ASME Section IX 407.1 interpretation

[sandeepKumar63]

Hi
can anybody please interpertate ASME section IX clause 407.1.
Also does 407.6 support, 407.1?
i.e. 407.6 applies when 407.1 is applicable.
thanks for your help in advance.

 

[DekDee]

sandeepkumar,
When QW 407.6 is applicable (eg. Hard facing overlay welding) then you have to comply with the requirements of QW 407.6 & QW 407.1,
Regards,
DD

 

[fleischfresser]

Hi,
I do not agree with DekDee.
The use of ASME IX must perform always in the same way. For Procedure qualifications the applicable tables Qw-252 to QW-269 have to review as first.

For each process exist two tables:
-one for the standard process and
-one for “special processes” hardfacing and corrosion resistant overlay (CRO)
These tables clear indicate that QW-407.1 is applicable only for standard process and QW-407.6 is applicable for hardfacing only.
This means either QW-407.1 or QW-407.6 is applicable, but never both variables. Because a standard process e.g. SMAW do not qualifies for special processes e.g. SMAW hardfacing and vice versa.
JF


Regards - Juergen

 

[DekDee]

Juergen,
Please explain your response.

"This means either QW-407.1 or QW-407.6 is applicable, but never both variables."

QW-407.6 A change in postweld heat treatment condition
in QW-407.1 or an increase of 25% or more in total
time at postweld heat treating temperature.

Regards,
DD

 

[aburafdi]

Agree with DD.

To make it short: QW-407.6 = QW-407.1 + increase 25% time or more

Regards

 

[sandeepKumar63]

Ok, thanks to all of ur for ur very helpful post.
can anyone please elaborate QW 407.1 a & b requirements in details please

 

[MITProfessor]

hello,

wherever QW 407.6 applies, QW 407.1 automatically kicks in.

 

[weldtek]

Please review QG-105.4