impact test requirement

[sujit kumar]

Dear all,

if we have already qualified WPS for  P no 8 to P no 8 . then now we have  the requirement of the impact test. what to do? since it is a supplementary essential requirement. so may i  prepare test piece for the impact test and attached this impact test report to previous wps...?

Regards.

sujit

[Rameshbabu B]

Impact test temperature?

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[sujit kumar]

-50 degree celcius

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[Rameshbabu B]

This will get exempted according to UHA 51.

Still, if you wanted to qualify with an impact test refer below

1. Existing PQR parameters should follow for qualification.

2. Perform an Impact test on the specific temperature and support the results.

Regards

Ramesh Babu Balaram

General Manager - Corporate Quality

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[Parminder Singh]

Supplimentary essential variable meant essential when impact test is required.. means requalification of PQR 

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[james gerald]

1. MDMT

2. Applicable Design code to determine the exemption

3. Welding code such as ASME Sec.IX

Normally supplementary PQR for Hardness and Impact is permitted

Thanks & Regards

J.Gerald Jayakumar

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[Vishwas Keskar]

What is the MDMT?

What is the Welding process?

What is consumable?

Is this consumable is perused tested?

 

Go the UHA 51 - There are exemptions to SS consumables .

Pl go thr it .

I am sure these will get exempted 

Thanks 

Vishwas

IWE 

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On 28-Apr-2023, at 4:28 PM, 'james gerald' via Materials & Welding <material...@googlegroups.com> wrote:



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[sujit kumar]

Dear vishwas sir,

Please find below reply.

What is the MDMT?----(-45°C @ 10 bar(g))

What is the Welding process?----(GTAW)

What is consumable? ----(ER308L)

Is this consumable is perused tested?( NO NOT TESTED)

Best Regards.

sujit

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[Vishwas Keskar Welding Manager WELDING]

Dear Sujit 

For above conditions 

What is the MDMT?----(-45°C @ 10 bar(g))

What is the Welding process?----(GTAW)

What is consumable? ----(ER308L)

Is this consumable is perused tested?( NO NOT TESTED)

You do not have to qualify PQR as the boundary conditions are in line with exemption permitted in  Code - 

See exemption snap copied  form ASME SEC VIII DIV 1 - UHA-51 clauses (Refer statement in bold)

 ""

 (e) Exemptions from Impact Testing for Welding Procedure Qualifications. 

For Welding Procedure Qualifications, impact testing is not required for the following combinations of weld metals and MDMTs except as modified in (c): 

(1) for austenitic chromium–nickel stainless steel base materials having a carbon content not exceeding 0.10% welded without the addition of filler metal, at MDMTs of −155°F (−104°C) and warmer;  

  (2) for austenitic weld metal: (-a) having a carbon content not exceeding 0.10% and produced with filler metals conforming to SFA-5.4, SFA-5.9, SFA-5.11, SFA-5.14, and SFA-5.22 at MDMTs of −155°F (−104°C) and warmer;

(-b) having a carbon content exceeding 0.10% and produced with filler metals conforming to SFA-5.4, SFA-5.9, SFA-5.11, SFA-5.14, and SFA-5.22 at MDMTs of −55°F (−48°C) and warmer;  ""

Thanks

Vishwas -

IWE