Now, we found severe CUI attack at the skirt of vessel as detail below:
Vessel size: 6'6" dia x 17'2"heigh
Material: SA516 Gr.70N (shell, head and skirt)
skirt nominal thk: 12.70 mm
remaining thk.: around 3.50 mm entire the circum. of skirt.
empty weight: around 85000 lbs
const. code: ASME VIII...
Background: Exist process piping weld joints (2.5, 6, 14 & 20 NPS) on vessel installation were inspected with UT-TOFD & RT and found lack of side wall fusion, lack of root penetration and gas porosity on ~120 weld joints which it unacceptable by applicable current standard (original...
