Dimensions

Question 1

Design – mill tolerance for rolled and welded pipe

Answer 1

-0.010”

Question 2

NDE - Maximum length of crack, or incomplete fusion allowed on a new weld

Answer 2

0”

Question 3

Flanges – typical flange face finish

Answer 3

125–250 micro-inch

Question 4

Flanges – when mating flanges, the maximum amount of unparallel allowed (per diameter of flange in feet)

Answer 4

1/16” per foot

Question 5

Flanges – Max offsets for bolt – holes for meeting flanges

Answer 5

1/8”

Question 6

Welding – maximum allowed size of open discontinuity in a bend test

Answer 6

1/8”

Question 7

Welder – thickness to qualify welder with UT

Answer 7

Greater than or equal to 1/4”

Question 8

NDE – minimum distance beyond the area to be examined to clean a part when performing a MT examination

Answer 8

1”

Question 9

NDE – minimum distance beyond the area to be examined to clean a part when performing a PT examination

Answer 9

1”

Question 10

Repairs – minimum radius of insert patch

Answer 10

1”

Question 11

Repairs – minimum radius of fillet – weld patch

Answer 11

1”

Question 12

NDE – suggested diameter of CML exam point

Answer 12

2”

Question 13

Preheat zone - Distance from start of weld

Answer 13

Greater of 3” or 1.5 T

Question 14

PWHT zone – minimum width of band

Answer 14

3T

Question 15

NDE – minimum length of spot RT

Answer 15

6”

Question 16

Weld qualify – minimum weld length when qualifying a welder with RT/UT using a coupon or first production weld

Answer 16

6”

Question 17

Weld qualify – minimum weld length when qualifying a welding operator with RT/UT of a test coupon 

Answer 17

6”

Question 18

Corrosion – soil-to-air area – distance in air from interface

Answer 18

6”

Question 19

Corrosion – distance to dig when inspecting for soil to air corrosion

Answer 19

6-12”

Question 20

NDE – distance of eyes –to– part to count as a visual exam

Answer 20

6-24”

Question 21

Corrosion – soil to air area – distance in soil from interface

Answer 21

12”

Question 22

NDE – minimum upstream limit of intensive examination of injection point circuit

Answer 22

12”

Question 23

PWHT – minimum overlap for PWHT when using multiple heats

Answer 23

12”

Question 24

Weld qualify – minimum weld length when qualifying a welding operator with RT/UT of first Production weld

Answer 24

3 feet

Question 25

Underground – minimum length of buried pipe to expose when excavating for inspection

Answer 25

6-8’

Question 26

Repairs – maximum size of fillet weld patch on pipe

Answer 26

1/2 diameter

Question 27

Circuits – minimum upstream limit of injection point circuit

Answer 27

Greater of 12 inch or 3 Diameter

Question 28

NDE – minimum downstream limit of intensive examination of injection point circuit

Answer 28

10 Diameters

Question 29

Circuits – min downstream limit of injection point circuit

Answer 29

Lesser of: 1st direction change +25 feet, or 2nd direction change

Question 30

Linear indication

Answer 30

Length is > 3 times width