for the assessment of the blistered areas we have to know
1- the max. blister dia
2- the min distance between the closest blisters and the distance from nearest structural members like nozzle, attachement,...etc.
3- are all blisters at the same level
4- dia of the vessel
5- is the vessel Heat...
Ferrite generally has been expressed as the volume percent in the weld metal bead. FOR A GIVEN LOCATION USING STANDARDIZED WELDING PROCEDURE AND MEASUREMENT TECHNIQUES (INCLUDING INSTRUMENT CALIBRATION) THE PERCENTAGE WERE RELIABLE AND REPRODUCIBLE WITHIN RATHER NARROW LIMITS. On the other hand...