UCS-67

[Fizza453]

I have few questions regarding UCS-67:
1- Curve B material is exempt from impact testing by UCS-66 and MDMT is colder than -48C, is it required WPS be impact tested?
2- When Base metal is exempt from imapct testing by UG-20(f), UCS-67(b) requirements are still applicable?
3- When material is exempt from impact testing by UG-20(f), requirements of UCS-67(c)(2) are applicable?
4- Is it correct that WPS must be impact tested for Curve B and Curve C materials when MDMT is colder than -48C irrespective of the fact whether or not the either base metal is exempt from impact testing by UCS-66.



Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN

 

[Fizza453]

A little correction in Question 4 above.

4- Is it correct that WPS must be impact tested for Curve A and Curve B materials when MDMT is colder than -48C irrespective of the fact whether or not the either base metal is exempt from impact testing by UCS-66

Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN