Latest PDF of API-571: Corrosion and Materials Professional

Corrosion and Materials Professional Practice Test

API-571 exam Format | Course Contents | Course Outline | exam Syllabus | exam Objectives

Exam Detail:
The API-571 Corrosion and Materials Professional certification exam is designed to assess the knowledge and expertise of professionals working in the field of corrosion control and materials selection in the oil and gas industry. Here are the exam details for API-571:

- Number of Questions: The exam consists of 100 multiple-choice questions.

- Time Limit: The time allocated to complete the exam is 3.5 hours.

Course Outline:
The API-571 certification is based on a comprehensive body of knowledge that covers various aspects of corrosion and materials in the industry. The course outline generally includes the following areas:

1. Corrosion Control:
- Corrosion mechanisms and types.
- Corrosion monitoring and inspection techniques.
- Corrosion prevention and control methods.

2. Corrosion Management:
- Risk assessment and management.
- Corrosion control documentation and procedures.
- Corrosion mitigation strategies.

3. Materials Selection and Design:
- Material properties and selection criteria.
- Material degradation mechanisms.
- Material selection for specific environments and applications.

4. Inspection and Testing:
- Non-destructive testing techniques.
- Material and coating evaluation methods.
- Failure analysis and root cause determination.

5. Corrosion in Specific Environments:
- Corrosion in pipelines and vessels.
- Corrosion in refining and chemical processing.
- Corrosion in offshore and marine environments.

Exam Objectives:
The objectives of the API-571 exam are as follows:

- Assessing candidates' understanding of corrosion mechanisms and types.
- Evaluating candidates' knowledge of corrosion monitoring and inspection techniques.
- Testing candidates' proficiency in corrosion prevention and control methods.
- Assessing candidates' familiarity with materials selection criteria and material degradation mechanisms.
- Evaluating candidates' understanding of non-destructive testing techniques and failure analysis.

Exam Syllabus:
The specific exam syllabus for the API-571 exam covers a wide range of syllabus related to corrosion and materials. The syllabus includes:

1. Corrosion Mechanisms:
- Uniform corrosion.
- Galvanic corrosion.
- Pitting corrosion.
- Crevice corrosion.
- Stress corrosion cracking.
- H2S corrosion.

2. Corrosion Monitoring and Inspection:
- Corrosion rate measurement.
- Cathodic protection monitoring.
- Corrosion coupon and probe monitoring.
- Visual inspection techniques.
- Ultrasonic testing.

3. Corrosion Prevention and Control:
- Protective coatings and linings.
- Cathodic protection systems.
- Inhibitors and corrosion inhibitors.
- Material selection for corrosion resistance.

4. Materials Selection and Design:
- Mechanical properties of materials.
- Chemical resistance of materials.
- Material selection for specific applications.
- Material degradation mechanisms.

5. Non-Destructive Testing:
- Ultrasonic testing.
- Magnetic particle testing.
- Liquid penetrant testing.
- Radiographic testing.

6. Failure Analysis and Root Cause Determination:
- Failure modes and mechanisms.
- Failure investigation techniques.
- Root cause analysis.

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API-571
Corrosion and Materials Professional
https://killexams.com/pass4sure/exam-detail/API-571
Question: 285
With steam blanketing, failure occurs as a result of _________ in the tube from the internal steam pressure at the
elevated temperature.
A . Stress risers
B . Velocity
C . Hoop stress
D . Tensile strength
Answer: C
Question: 286
Carbon dioxide corrosion results when CO� dissolves in water to form _________ acid.
A . Sulfuric
B . Hydrochloric
C . Carbonic
D . None of the above
Answer: C
Question: 287
Protection in a boiler from boiler feed water corrosion is accomplished by:
A . Injecting chlorines to kill microbiological bugs.
B . Injecting caustic to lower the ph to < 4.0.
C . Lowering solids content in boiler feed water to less than 50 ppm.
D . Maintaining a protective corrosion layer of magnetite (Fe3O4).
Answer: D
Question: 288
Susceptibility to hydrogen stress cracking __________ with __________ hardness.
A . Increases, increasing
B . Decreases, increasing
C . Decreases, Decreasing
D . Both A and C
Answer: D
Question: 289
With sour water corrosion, corrosion increases with __________ NH4HS concentration and __________ velocity.
A . Increasing, Decreasing
B . Increasing, Increasing
C . Decreasing, Decreasing
D . Decreasing, Increasing
Answer: B
Question: 290
_________ is the main concern during start-up, shutdown and/or hydro testing for equipment/piping operating at
elevated temperatures. This event can also occur in an auto refrigeration event in units processing light hydrocarbons.
A . Stress fracture
B . Carburization
C . Spheroidization
D . Brittle fracture
Answer: D
Question: 291
With creep, increased stress due to loss in thickness from corrosion will ________ time to failure.
A . Increase
B . Reduce
C . Not affect
D . None of the above
Answer: B
Question: 292
With hydrofluoric acid corrosion, corrosion rates increase with _______ temperatures and ______ HF concentrations.
A . Increasing, decreasing
B . Decreasing, increasing
C . Increasing, increasing
D . Decreasing, decreasing
Answer: A
Question: 293
To prevent hydrogen embrittlement, use lower strength steels and _________ to temper the microstructure, improve
ductility and reduce residual stresses.
A . Alloys
B . Preheat
C . PWHT
D . All of the above
Answer: C
Question: 294
The level of creep damage is a function of the material and the coincident _________ level at which the creep
deformation occurs.
A . Pressure/Temperature
B . Pressure/Stress
C . Temperature/Stress
D . None of the above
Answer: C
Question: 295
A form of corrosion that can occur at the junction of dissimilar metals when they are joined together in a suitable
electrolyte is __________.
A . Galvanic corrosion
B . Anodic corrosion
C . Cathodic corrosion
D . All of the above
Answer: A
Question: 296
The primary factors affecting high temperature oxidation are metal temperature and _______.
A . Pressure
B . Alloy composition
C . Stress
D . Oxygen
Answer: B
Question: 297
Sulfuric acid promotes general and localized corrosion of carbon steel. Carbon steel heat affected zones may
experience severe corrosion. Acid concentration, temperature, alloy content and ____________ are critical factors
affecting sulfuric acid corrosion.
A . Pressure
B . Stress
C . Velocity
D . Ductility
Answer: C
Question: 298
Which of the following materials is affected by high temperature corrosion?
A . Carbon steel
B . 300 Series SS
C . 400 Series SS
D . All of the above
Answer: D
Question: 299
Many thermal fatigue cracks are filled with:
A . chlorides.
B . hydroslime.
C . oxides.
D . sulfides.
Answer: C
Question: 300
Ammonium chloride corrosion is the general or localized corrosion, often pitting, normally occurring under ammonium
chloride or amine salt deposits. All commonly used materials are susceptible to ammonium chloride corrosion. A small
amount of _________ can lead to very aggressive corrosion.
A . Ammonium chloride
B . Amine
C . Water
D . Salt
Answer: C

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