DIMENSIONS Flashcards
Maximum length of Crack, Incomplete Penetration or Incomplete Fusion allowed on a new weld
0”
Smoothness of relief device seating surfaces
3 light beads/bands
Maximum allowed mill tolerance of a plate
Lesser: 0.010” or 6% of T”
Maximum allowed size of open discontinuity in a Bend Test
1/8”
NDE – Typical thickness range for RT using Iridium 192
0.25 – 3.0”
Thickness for using UT in lieu of RT for: 1) Inspection of new vessel welds or, 2) to qualify welder
> 1/4”
Minimum distance beyond the area to be examined to clean a part when performing a MT or PT examination
1”
Minimum radius of insert patch or fillet weld patch
1”
Evaluate LTA – Distance from the weld in for: E = 1.0
Greater of: 1” or 2T
NDE – Typical thickness range for RT using Cobalt 60
1.5 – 7.0”
Wall thickness of CS shell that requires PWHT
> 1-1/2”
Wall thickness of shell that requires Full RT
> 1-1/2”
Maximum length of pits allowed in 8” line
2”
Maximum diameter of an examination point
3”
Vessel inside diameters that are excluded from the scope of Section VIII
< 6”
Weld Qualify - Minimum weld length when qualifying a welder with RT/UT using a coupon or 1st production weld
6”
Weld Qualify - Minimum weld length when qualifying a welding operator with RT/UT of a test coupon
6”
Minimum length of Spot RT
6”
NDE – Distance of eye-to-part to count as a Visual Exam
6-24”
Maximum distance on weld between welder’s stamp
3’
Weld Qualify - Minimum weld length when qualifying a welding operator with RT/UT of first production weld
3’
Minimum overlap for vessel PWHT when using multiple heats
5’
Maximum length of weld represented by 1 Spot RT
50’
Minimum allowed wall thickness at a pit
½ t-min
