Line Sizes

Question 1

NDE – pipe size where RT is preferred for thickness readings

Answer 1

Less than or equal to 1 NPS

Question 2

NDE – pipe size where UT thickness readings may require specialized UT equipment

Answer 2

Less than or equal to 2 NPS

Question 3

Terms – small bore piping

Answer 3

Less than or equal to 2 NPS

Question 4

Maximum pipe size normally allowed for threaded pipe

Answer 4

Less than or equal to 2 NPS

Question 5

Maximum pipe size normally allowed for socket– welded pipe

Answer 5

Less than or equal to 2 NPS

Question 6

NDE – maximum pipe size for performing an elliptical shop ( double dash wall technique, double dash wall view)

Answer 6

3 NPS

Question 7

NDE – pipe sizes can use profile RT to find localized corrosion

Answer 7

Less than or equal to 8 NPS

Question 8

Pipe size where pipe OD is equal to pipe size (NPS)

Answer 8

Greater than or equal to 14 NPS

Question 9

Pipe size where pipe is almost always made using rolled & welded plate

Answer 9

Greater than 16 NPS