Deck 17: Pipe Weld Repairs

Question 1

How did wagon tracks get their name?​

Answer 1

The reason for this term is that they look similar to wagon tracks on an x-ray. ​

Question 2

Start your slag removal by using a _____ or file modified for removing slag. ​

Answer 2

chipping hammer

Question 3

The first step in crack repair is to determine the _____ of the crack. ​

A)length​
B)width​
C)depth​
D)area​

Answer 3

A

Question 4

Why must the length and depth of a crack be determined in order to repair it? ​

Question 5

The weld _____ is the junction between the edge of the weld and the base metal. ​

A)toe​
B)foot​
C)groove​
D)face​

Question 6

The pipe size, schedule, and _____ will determine the size of grinding disk you should use. ​

Question 7

_____ are pockets of material within a weld that are not metal. ​

A)Flux​
B)Slag​
C)Nonmetallic inclusions ​
D)Residual silicon ​

Question 8

_____ uses a solution that is applied to the area that is to be inspected. ​

Question 9

When removing slag, eliminate the _____ pieces first. ​

A)hard​
B)soft​
C)large​
D)small​

Question 10

Insufficient _____ can result in rapid cooling of a tack weld or weld, resulting in cracking. ​

A)heating​
B)preheating​
C)cooling​
D)precooling​

Question 11

Surface cracks can be located by using either a liquid penetrant or a _____ inspection process. ​

A)grinding​
B)slag removal​
C)magnetic particle​
D)preheating​

Question 12

When repairing a weld, use a(n)_____ or similar low-hydrogen electrode. ​

Question 13

_____ are typically encountered with processes that use a flux or leave a slag or residual silicon after welding. ​

Question 14

A(n)_____ grinder is easier to control and reduces fatigue, making grinding safer. ​

A)larger​
B)smaller​
C)heavier​
D)electric​

Question 15

Why is it important to grind the ends of a crack to a featheredge? ​

Question 16

Incomplete joint penetration is a discontinuity associated with _____. ​

A)tack welds​
B)groove welds​
C)cracks​
D)contamination​

Question 17

What is required of magnetic particle testing? ​

Question 18

For grinding and repairing pipe, it is best to select a grinding disk that can be used at a _____ -degree angle. ​

A)30​
B)45​
C)60​
D)90​

Question 19

Nonmetallic inclusions will typically be located _____ weld passes. ​

A)above​
B)below​
C)between​
D)next to​

Question 20

What should be taken into account when making repairs? ​