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API-577 Welding Inspection and Metallurgy

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API · API-577

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Question 1

Single choice

When welding using the shielded metal arc welding (SMAW) process, which of the following best describes the appearance of excessive penetration on a radiograph?

A
A lighter density in the center of the width of the weld image, either extended along the weld or in isolated circular drops.
B
An irregular darker density near the center of the width of the weld image along the edge of the root pass image.
C
An abrupt density change across the width of the weld image with a straight longitudinal darker density line at the center of the width of the weld image along the edge of the density change.
D
A localized darker density with fuzzy edges in the center of the width of the weld image.

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Correct answerB

Question 2

Single choice

Prior to any welding, inspectors should review the:

A
WPQ to verify that the welder is qualified to perform the welding, given its position and process.
B
WPQ to verify that the specification in use is correct.
C
PQR to verify that the welder is qualified to perform the welding, given its position and process.
D
WPS to verify that the welder is qualified to perform the welding, given its position and process.

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Correct answerD

Question 3

Single choice

When welding using the GTAW process, which of the following best describes the appearance of a transverse crack on a radiograph?

A
A feathery line of longitudinal orientation located at the center of the weld image.
B
Elongated lines of darker density, irregular in width, and slightly winding in the lengthwise direction.
C
A feathery, twisted line of darker density running across the width of the weld.
D
An irregular darker line near the center of the width of the weld image along the edge of the root pass image.

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Correct answerC

Question 4

Single choice

What is the major cause of lack of fusion in all welding processes involving carbon steel?

A
Inadequate preheat
B
Improper welding speed
C
Improper heat input and improper welding technique
D
Not using a low hydrogen electrode or improper shielding

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Correct answerC

Question 5

Single choice

To reduce the possibility of cracking, which of the following maximum hardness levels is required for weldments in wet H2S service?

A
HRC 20
B
HRC 22
C
HRC 25
D
HRC 32

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Correct answerB

Question 6

Single choice

Which of the following determines the necessity for preheat and postweld heat treatment?

A
The percentage of carbon that will be in the completed weld
B
The as-rolled hardness of the welding components
C
The carbon equivalent of the steel
D
The rate of cooling after the welding is completed

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Correct answerC

Question 7

Single choice

For SMAW welding, the last number of the electrode identification identifies:

A
Chemical composition.
B
Electrode operating characteristics.
C
Welding position.
D
Coating operating characteristics.

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Correct answerD

Question 8

Single choice

Refer to the following diagram:

Item#1 represents:

A
root opening.
B
root weld size.
C
groove weld size.
D
root face.

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Correct answerA

Question 9

Single choice

For what maximum outside diameter may a radiographic technique be used in which the radiation passes through two walls and the weld in both walls is viewed for acceptance?

A
1.5 in. (38.0 mm)
B
2.5 in. (63.5 mm)
C
3 in.(76.2 mm)
D
3.5 in. (90.0 mm)

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Correct answerC

Question 10

Single choice

If an individual changes an essential variable in the WPS, the individual must:

A
Re-qualify the PQR.
B
Re-qualify the WPS.
C
Record the change on the existing WPS.
D
List the change as a supplement to the WPS.

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Correct answerB

Question 11

Single choice

Hardness testing of production welds and the HAZ requires test areas to be:

A
Ground to a smooth contour.
B
Cleaned down to the bare metal.
C
Cleaned to remove surface scale and flux.
D
Clean, flat area or even flush with the base metal.

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Correct answerD

Question 12

Single choice

A welding engineer or inspector should be notified when a weld has failed a weld quality test more than how many times in order to help determine the cause of the test failure?

A
ONCE
B
TWICE
C
THREE TIMES
D
FOUR TIMES

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Correct answerB

Question 13

Single choice

A "mill certificate" is a/an:

A
Analysis of the chemical elements in an ingot.
B
Chemical analysis of a base metal to be welded.
C
List of the chemical and mechanical properties specified by a purchaser.
D
Product analysis of mechanical properties of a base metal.

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Correct answerC

Question 14

Single choice

What does an AWS classification number identify?

A
Electrode diameter and strength
B
Electrodes and welding rods
C
Chemical composition of the deposited weld metal
D
Base metal and group number

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Correct answerB

Question 15

Single choice

Exposed film that allows 1% of the incident light to pass through has a film density of:

A
1.0
B
2.0
C
3.0
D
4.0

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Correct answerC

Question 16

Single choice

If a nonessential variable is changed on a WPS, which of the following actions must occur?

A
The welding inspector can simply make the change on the WPS and initial as proof of acceptance.
B
It may be changed on the WPS without requalifying the welding procedure.
C
The welding procedure will need to be requalified by performing mechanical testing.
D
Impact testing must be performed at the discretion of the welding engineer.

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Correct answerB

Question 17

Single choice

What is the purpose of a PQR?

A
To provide direction to the welder making production welds.
B
To establish the properties of the weldment.
C
To document that a welder has correctly followed a WPS.
D
To establish a welder's capability to make a quality weld.

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Correct answerB

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Welding Inspection and Metallurgy

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