Sect. IX QW- 290.6 In-Process Repair Welding
Sect. IX QW- 290.6 In-Process Repair Welding
(OP)
We are currently developing temper bead procedures to be used in conjunction with the NBIC alternative methods to PWHT. Will I need to have our qualified welders to perform the proficiency demonstration when using these procedures for repairs?





RE: Sect. IX QW- 290.6 In-Process Repair Welding
RE: Sect. IX QW- 290.6 In-Process Repair Welding
For Section I, temper bead has now been approved as a weld repair method for the 2011 edition, and will soon follow with acceptance criteria for both hardness and welder proficiency qualification.
RE: Sect. IX QW- 290.6 In-Process Repair Welding
(e) Welders who will use manual and semiautomatic
GTAW or PAW shall be qualified to use these welding
processes as required by QW-300. In addition, each welder
shall complete a proficiency demonstration. For this demonstration,
each welder shall deposit two or more weld
beads using WPS parameters for each deposit layer. The
test coupon size shall be sufficiently large to make the
required weld bead passes. The minimum pass length shall
be 4 in. (100 mm). The heat input used by the welder shall
be measured for each pass, and the size of each weld bead
shall be measured for each pass, and they shall be as
required by the WPS.
RE: Sect. IX QW- 290.6 In-Process Repair Welding
RE: Sect. IX QW- 290.6 In-Process Repair Welding
Real World: A welding inspector will need to be present for the entire process, to record the variables and give an independant account of whether the approved process was followed. Leaving that up to the welder(s) is asking them to inspect their own work. Anything Code related requires a QC presence separate from the folks performing the work.
RE: Sect. IX QW- 290.6 In-Process Repair Welding