Dimensions Flashcards
Design - Mill tolerance for rolled and welded pipe
-0.010” 574: 4.1.1.3
NDE - Maximum length of Crack, or Incomplete Fusion allowed on a new weld
0” B31.3: Tbl 341.3.2
Flanges - Typical flange face finish
125-250 micro-inch B16.5: 6.4.5.3
Flanges - When mating flanges, the maximum amount of unparallel allowed (per diameter of flange in feet)
1/16” per foot B31.3: 335.1.c.1
Flanges - Max offset for bolt-holes for mating flanges
1/8” B31.3: 335.1.c.3
Welding - Maximum allowed size of open discontinuity in a Bend Test
1/8” ASME IX: QW-163
Preheat Zone – Distance from toe of weld
1” B31.3: 330.1.4
PWHT Zone – Distance from toe of weld
1” B31.3: 331.2.6
NDE - Minimum distance beyond the area to be examined to clean a part when performing a MT examination
1” ASME V: T-741.1.b
NDE - Minimum distance beyond the area to be examined to clean a part when performing a PT examination
1” ASME V: T-642.b
Repairs - Minimum radius of insert patch
1” 570: 8.1.4.2.c
Repairs - Minimum radius of insert patch
1” 570: Fig C.2
NDE – Max diameter of CML exam point for lines < 10 NPS
2” 570: 3.1.20
NDE – Max diameter of CML exam point for lines > 10 NPS
3” 570: 3.1.20
NDE – Minimum length of Spot RT
6” B31.3: 344.5.2.c
Welding - Min length to RT/UT when qualifying a welder with test coupon or 1st production weld
6” ASME IX: QW-302.2/ 304.1
Welding - Minimum length of RT when qualifying a welding operator with a test coupon
6” ASME IX: QW-302.2
Corrosion - Soil-to-Air area – distance in air from interface
6” 570: 3.1.87
Corrosion - Distance to dig when inspecting for Soil-to-Air corrosion
6-12” 574: 7.4.5
NDE – Distance of eye-to-part to count as a Visual Exam
6-24” 577: 9.3.1.e
Corrosion - Soil-to-Air area – distance in soil from interface
12” 570: 3.1.87
NDE - Minimum upstream limit of intensive examination of injection point circuit
12” 570: 5.5.9
PWHT - Min overlap for PWHT when using multiple heats
12” B31.3: 331.2.5
Welding - Minimum length of RT/UT when qualifying a welding operator on first production weld
3’ ASME IX: QW-305.1
Underground - Minimum length of buried pipe to expose when excavating for inspection
6-8’ 570: 9.3.6
Repairs - Maximum size of fillet weld patch on pipe
½ Diameter 570: Fig C.2
Circuits - Minimum upstream limit of injection point circuit
Greater of: 12” or 3 Dia. 570: 5.5.9
NDE - Minimum downstream limit of intensive examination of injection point circuit
10 Diameters 570: 5.5.9
Circuits - Min downstream limit of injection point circuit
Lesser of:
1st direction change + 25’
or
2nd direction change 570: 5.5.9
