I am preparing an ASME IX WPS covering both SMAW and SAW processes with one single specimen (3G, plate), each having weld thickness of minimum 19 mm as per Code, SMAW is from root to filler and SAW from filler to capping, the specimen (plate) nominal thickness is 40 mm. My questions are as below:

1) Will the full thickness specimen tensile and bend test as per para QW-151.1 & QW-161.1 be covering both processes (SMAW & SAW)

2) what about impact testing, what reference I should use (which complying to the Code) to have specimens of covering both processes (SMAW & SAW)?

Thanks
Regards
Decky

Dear Mr. Decky,
Yes, full THK tensile & bend covering both processes. For impact test : each process specimen has to be tested, refer, UG-84 for location of impact test.

Regards
vishal

Mr. Vishal,

I did not see in UG-84(h) regarding the individual process rather than the specimen, my specimen is only one specimen but covering two processes, how can I justify that I need impact test for both processes, while I also see the requirements of UG-84(h)(3), will this requirement also apply for this specimen, while thickness of each process is about the same i.e. 20 mm weld thickness for both processes, would you please elaborate

Greatly appreciate
Regards
Decky

Dear Mr. Decky,

As per Code Two location shall be tested for Plate THK above 38mm. One at 1.5mm from Top & Other at 3/4T from TOP for Weld + HAZ.

However, Code do not ask for individual Process specimen , but Many Project Specification. Therefore, Who wants to make big list of unnecessary PQR with repeated condition.

Regards
vishal

Mr. Vishal,

If my specimen satisfy the requirement of UG-84(h)(3), and impact test is performed at 1.5mm from TOP will be for SAW process and at 3/4T from TOP for SMAW, will it be considered as covering both processes?

Thanks
Regards
Decky

Dear Mr. Decky.
I suppose, this is not A, B, C Learning Class-Room. I already made, it clear.

Regards

Ok, Thanks Mr. Vishal

How you can perform SAW in 3G?

Hi,

Up to Ed. 2001. Add. 2003 in the following paragraph had required that impacts have to performed from each deposit.

ASME IX Ed. 2001
QW-200.4 Combination of Welding Procedures
(a) More than one procedure having different essential or nonessential variables may be used in a single production joint. Each procedure may include one or a combination of processes, filler metals, or other variables. Where two or more procedures involving different processes or other essential variables are used in one joint, QW-451 shall be used to determine the range of base metal thickness qualified and the maximum thickness of deposited weld metal qualified for each process or procedure. Alternatively, qualification for root deposits only may be made in accordance with QW-200.4(b). The deposited weld metal of each process or procedure shall be included in the tension and bend specimens, and in the notch-toughness specimen (when required). One or more processes or procedures may be deleted from a qualified combination procedure. Each such process or procedure may be used separately provided:
(1) the remaining essential, nonessential, and supplementary essential variables are applied;
(2) the base metal and deposited weld metal thickness limits of QW-451 are applied.

The following Interpretations for clarification:

Interpretation: IX-92-42
Subject: Section IX, QW-200.4(a), Combination of Welding Processes
Date Issued: September 30, 1992
File: BC92-011

Question: May a single set of weld metal impact test specimens be used to qualify two or more processes or procedures?

Reply: Yes, provided weld metal from each process or procedure is included in each specimen.


Interpretation: IX-01-24
Subject: QW-200.4, Impact Test Qualification of Multiprocess Welds
Date Issued: March 11, 2002
File: BC01-814

Question: A welding procedure qualification is made using multiple welding processes on a single test plate for an application where notch-toughness testing is required. The weld coupon was welded with two passes each of GTAW and FCAW, and the remainder with SAW process. Is it required to take multiple sets of weld metal impact test specimens to include all welding processes when all welding could not be included in a single set of specimens?

Reply: Yes.


With the Ed. 2001, Add. 2004 QW-200.4(a) was revised and the sentence “. The deposited weld metal of each process or procedure shall be included in the tension and bend specimens, and in the notch-toughness specimen (when required).” was removed.

But in the same Ed. and Add. QW-200.2(b) was also revised and a similar sentence was added

ASME IX Ed. 2007, Add. 2009
“QW-200.2(b)
…..
One or more combinations of welding processes, filler metal, and other variables may be used when welding a test coupon. The approximate thickness of weld metal deposited shall be recorded for each set of essential and, when required, supplementary essential variables. Weld metal deposited using each set of variables shall be included in the tension, bend, notch toughness, and other mechanical test specimens that are required.”

That means each deposit shall be included impact tests.

Hope that helps,

_________________
Kind regards,
Juergen Fleischfresser

Thank you, Juergen

Regards
Decky

Thanks Mr Juergen Fleischfresser for your clear explanation with intrepretations.

Mr deckyantoni,

During our ASME Audit in 2005, ASME Team leader confirms the same as mentined above the requirement of Impact test specimen selection. further he confirmed ,the tension & bend test full thickness coverage is sufficient.