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[MW:31328] Re: Impact test requirements for LAS

By Materials & Welding
Dear Experts,

Please I need your answer to my above query. 

My client has mentioned the above 25 mm Impact test would be required, in accordance with B31.3.

Question: Are materials, for which a temperature of −20°F (−29°C) is listed in the Minimum Temperature column of
Table A-1, exempt from impact testing for any combination of thickness and temperature above −20°F (−29°C)? Reply: Yes.
The minimum temperature in our scope is not below minus 29°C. If B31.3 calls for impact test within this temperature.

Your feedback is very important to me.


On Tuesday, July 28, 2020 at 10:12:01 AM UTC+5:30 K K wrote:
Dear Experts,

Please look into my query, please give me your response on my doubt.

Thanks
 Kiran 


On Monday, July 27, 2020 at 11:29:05 AM UTC+5:30, K K wrote:
Hi Experts,

"Good Morning"

My query has below.

Help me to prepare pWPS.
Process : GTAW +SMAW
Material : P.No - 5B   
ASTM A335 Grade P9.
Pipe Size - 16" Sch-60.
Thickness: 16.66 mm
Thickness range: 5mm to 33.32 mm
According to ASME B31.3 Table 323.3.1 shall I required an Impact for the above-mentioned thickness and material.
As per my knowledge, the above 25 mm impact test would be required. 
How I can find according to line class where impact test required or not.
If a minus 29° C impact test not required for LAS. 
When we shall consider the impact test exemption. 

And regarding consumable for P No- 5A 
ASTM A335 Grade P22

if I use ER90S-B3 ok or shall I use ER80S-B3 because my client suggest me to use ER80S-B3 please clarify way?

Thanks in advance 

Regards
Kiran




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