four times weld repair
four times weld repair
(OP)
we required repairs on a 48-inch diameter stub-in weldment and the last repair passed the ndt. however, the system was put on line after the repairs passed the ndt so we can minimize generation losses.
what will be the effect of not stress relieving the joint with four repairs? will a leak or crack eventually occur? the design temperature is 214MPag (310psig) and 216degC (420degF).
thanks.
what will be the effect of not stress relieving the joint with four repairs? will a leak or crack eventually occur? the design temperature is 214MPag (310psig) and 216degC (420degF).
thanks.





RE: four times weld repair
RE: four times weld repair
A little more information concerning materials and thicknesses of all components along with some weld details would be nice and help you get a more specific answer.
RE: four times weld repair
- 214 MPa is not equal to 310 psi.
- Refer to ISO 13703 - 2000 Edition, Para. 7.4.2, stub in connection is not recommended for branch connection.
RE: four times weld repair
thank you again.