ASNT LEVEL III – STUDY GUIDE BASIC

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Guía de estudio de introducción a ASNT Nivel III: Básico (Cuarta edición )

La Guía de Estudio de ASNT Nivel III: Básica (Cuarta Edición) es un recurso esencial para los profesionales que se preparan para presentar el Examen Básico como parte del proceso de certificación de ASNT Nivel III. Publicada por la Sociedad Americana de Ensayos No Destructivos (ASNT) , esta guía refleja las prácticas, estándares y expectativas más recientes en el campo de los ensayos no destructivos (END).

🎯 Propósito

Esta guía de estudio está diseñada para ayudar a los candidatos a:

  • Comprender los principios fundamentales de los END.

  • Familiarícese con los documentos clave de ASNT, como SNT-TC-1A , CP-189 y CP-105 .

  • Revisar la ciencia de los materiales, los procesos de fabricación y las responsabilidades generales de END.

  • Prepárese eficazmente para el examen básico ASNT Nivel III , que se requiere para todas las certificaciones de Nivel III específicas del método.

📚 Resumen del contenido

La guía está estructurada en varias secciones principales, entre las que se incluyen:

  • Sistemas de calificación y certificación de personal : descripción general y comparación de SNT-TC-1A, CP-189 y CP-105.

  • Desarrollo de la formación y la educación : Fundamentos del aprendizaje de adultos, diseño de sistemas de instrucción y procesos de cualificación.

  • Materiales y Procesos : Introducción a las propiedades, comportamientos y métodos de fabricación de materiales inspeccionados mediante END.

  • Descripción general de los métodos NDT : resúmenes de todos los principales métodos NDT, incluidos UT, RT, MT, PT, ET, VT, AE, LT y otros.

📝 Uso y aplicación

La Guía de Estudio es utilizada por:

  • Personas que se preparan para la certificación ASNT Nivel III.

  • Centros de formación e instructores que desarrollan contenidos de los cursos.

  • Empleadores que buscan comprender los procesos de calificación y certificación.

🔍 Relevancia del examen

El examen ASNT Nivel III Básico consta de 135 preguntas de opción múltiple que deben completarse en cuatro horas . Esta guía ayuda a los candidatos a dominar los conocimientos necesarios en:

  • Principios y técnicas generales de END.

  • Normas de certificación y ética.

  • Tecnología de materiales y aplicaciones de inspección

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Contenido del curso

CHARTER 1 – Overview of SNT-TC-1A (2020) -Sections 1, 2, and 3
Examen 10/06/2025 Sections 1, 2, and 3: Scope, Definitions, and Nondestructive Testing Methods Sections 1, 2, and 3 (Scope, Definitions, and Nondestructive Testing Methods) on pp. 1–2 of SNT-TC-1A (2020) are reprinted below in full: 1.0 Scope 1.1 It is recognized that the effectiveness of nondestructive testing (NDT) applications depends upon the capabilities of the personnel who are responsible for, and perform, NDT. This Recommended Practice has been prepared to establish guidelines for the qualification and certification of NDT personnel whose specific jobs require appropriate knowledge of the technical principles underlying the nondestructive tests they perform, witness, monitor, or evaluate. 1.2 This document provides guidelines for the establishment of a qualification and certification program. 1.3 These guidelines have been developed by The American Society for Nondestructive Testing Inc.to aid employers in recognizing the essential factors to be considered in qualifying personnel engaged in any of the NDT methods listed in Section 3. 1.4 It is recognized that these guidelines may not be appropriate for certain employers’ circumstances and/or applications. In developing a written practice as required in Section 5, the employer should review the detailed recommendations presented herein and modify them, as necessary,to meet particular needs. Such modification may alter but shall not eliminate basic provisions of the program such as training, experience, testing, and recertification. Supporting technical rationale for modification of detailed recommendations should be provided in an Annex to the written practice. 1.5 The use of third-party central certifications (e.g., ACCP, ASNT NDT Level II, and other internationally recognized third-party certification programs) may be used in place of employer examinations, as applicable, provided there is no conflict with the governing industry code or standard. 1.5.1 For Level II specific and practical examinations, the NDT Level III should ensure that the content of these examinations satisfies the requirements in Sections 8.4 and 8.5, respectively, in the employer’s program. 1.5.2 The use of third-party central certifications satisfying the requirements for employer-based examinations shall be documented in the employer’s written practice. 2.0 Definitions 2.1 Terms included in this document are defined as follows: 2.1.1 Calibration, Instrument: the comparison of an instrument with, or the adjustment of an instrument to, a known reference(s) often traceable to the applicable country’s national institute or standards body. (See also Standardization, Instrument.) 2.1.2 Certification: written testimony of qualification. 2.1.3 Certifying Authority: the person or persons properly designated in the written practice to sign certifications on behalf of the employer. 2.1.4 Certifying Agency: the employer of the personnel being certified. 2.1.5 Closed-Book Examination: an examination administered without access to reference material except for materials supplied with or in the examination. (See 8.1.3.) 2.1.6 Comparable: being at an equivalent or similar level of NDT responsibility and difficulty as determined by the employer’s NDT Level III. 2.1.7 Detection Rate: the number or percentage of false calls allowed for a test specimen as defined by the NDT Level III. 2.1.8 Documented: the condition of being in written form. 2.1.9 Employer: the corporate, private, or public entity, which employs personnel directly or indirectly for wages, salary,fees, or other considerations. This would include employers who obtain their qualified supplemental workforce personnel through third-party agencies, providing the use and certification of those supplemental employees is addressed in the employer’s written practice. 2.1.10 Experience: work activities accomplished in a specific NDT method under the direction of qualified supervision including the performance of the NDT method and related activities but not including time spent in organized training programs. 2.1.11 False Call: when an indication and/or grading unit is incorrectly identified as being a defect. 2.1.12 Grading Unit: a Qualification Specimen can be divided into sections called grading units, which do not have to be equal length or be equally spaced. Grading units are unflawed or flawed and the percentage of flawed/unflawed grading units required should be approved by the NDT Level III. 2.1.13 Limited Certification: nondestructive test methods may be further subdivided into limited disciplines or techniques to meet specific employers’ needs; these are NDT Level II certifications, but to a limited scope. 2.1.14 Method: one of the disciplines of NDT; for example, ultrasonic testing, within which various test techniques may exist. 2.1.15 Nondestructive Testing: a process that involves the inspection, testing, or evaluation of materials, components, and assemblies for materials’ discontinuities, properties, and machine problems without further impairing or destroying the part’s serviceability. Throughout this document the term NDT applies equally to the NDT methods used for material inspection, flaw detection, or predictive maintenance (PdM) applications. 2.1.16 Outside Agency: a company or individual who provides NDT Level III services and whose qualifications to provide these services have been reviewed and approved by the employer engaging the company or individual. 2.1.17 Personalized Instruction: may consist of blended classroom, supervised laboratory, and/or hybrid online competency-based course delivery. Modular content is covered through online presentations, in the classroom, and/or in small groups. Personalized instruction also enables students to achieve competency using strategies that align with their knowledge, skills, and learning styles. 2.1.18 Qualification: demonstrated skill,demonstrated knowledge, documented training, and documented experience required for personnel to properly perform the duties of a specific job. 2.1.19 Recommended Practice: a set of guidelines to assist the employer in developing uniform procedures for the qualification and certification of NDT personnel to satisfy the employer’s specific requirements. 2.1.20 Standardization, Instrument: the adjustment of an NDT instrument using an appropriate reference standard, to obtain or establish a known and reproducible response. (This is usually done prior to an examination, but can be carried out anytime there is concern about the examination or instrument response.) (See also Calibration,Instrument.) 2.1.21 Technique: a category within an NDT method; for example, ultrasonic thickness testing.2.1.22 Third-Party Agency: a company or organization, without an established written practice, providing supplemental workforce to the employer; for example,a temporary staffing company. 2.1.23 Training: an organized program developed to impart the knowledge and skills necessary for qualification. 2.1.24 Written Practice: a written procedure developed by the employer that details the requirements for qualification and certification of their employees. 3.0 Nondestructive Testing Methods 3.1 Qualification and certification of NDT personnel in accordance with this Recommended Practice is applicable to each of the following methods: Acoustic Emission Testing Electromagnetic Testing Ground Penetrating Radar Guided Wave Testing Laser Methods Testing Leak Testing Liquid Penetrant Testing Magnetic Flux Leakage Testing Magnetic Particle Testing Microwave Technology Testing Neutron Radiographic Testing Radiographic Testing Thermal/Infrared Testing Ultrasonic Testing Vibration Analysis Visual Testing

Overview of SNT-TC-1A (2020) – Sections 4
Examen 10/06/2025

Overview of SNT-TC-1A (2020) – Section 5

Overview of SNT-TC-1A (2020) – Section 6

Overview of SNT-TC-1A (2020) – Section 7

Overview of SNT-TC-1A (2020) – Section 8

Overview of SNT-TC-1A (2020) – Section 9

Overview of SNT-TC-1A (2020) – Section 10

Overview of SNT-TC-1A (2020) – Section 11

Overview of SNT-TC-1A (2020) – Section 12

Overview of SNT-TC-1A (2020) – Section 13

CHAPTER 2 – ANSI/ASNT CP-189 (2020) – Section 1 – 10

CHAPTER 3 – THE ASNT NDT LEVEL III CERTIFICATION PROGRAM

CHAPTER 4 – GENERAL APPLICATIONS OF NDT METHODS – Acoustic Emission Testing (AE)
Acoustic Emission Testing Topical Outline 2.1 Acoustic Emission Testing (AE) 2.1.1 Fundamentals 2.1.1.1 Principles/theory of AE 2.1.1.2 Sources of acoustic emissions 2.1.1.3 Equipment and material 2.1.2 Proper selection of acoustic emission technique 2.1.2.1 Instrumentation and signal processing 2.1.2.2 Cables (types) 2.1.2.3 Signal conditioning 2.1.2.4 Signal detection 2.1.2.5 Noise discrimination 2.1.2.6 Electronic technique 2.1.2.7 Attenuation materials 2.1.2.8 Data filtering techniques 2.1.3 Interpretation and evaluation of test results

CHAPTER 4 – GENERAL APPLICATIONS OF NDT METHODS – Electromagnetic Testing (ET )
2.2 Electromagnetic Testing (ET) 2.2.1 Sensors 2.2.2 Basic types of equipment; types of readout 2.2.3 Reference standards 2.2.4 Applications and test result interpretation 2.2.4.1 Flaw detection 2.2.4.2 Conductivity and permeability sorting 2.2.4.3 Thickness gauging 2.2.4.4 Process control

CHAPTER 4 – GENERAL APPLICATIONS OF NDT METHODS – Leak Testing (LT)
2.3 Leak Testing (LT) 2.3.1 Fundamentals 2.3.1.1 Bubble leak testing 2.3.1.2 Pressure leak testing 2.3.1.3 Halogen detector leak testing 2.3.1.4 Mass spectrometer leak testing 2.3.2 LT procedures, and techniques 2.3.2.1 System factors 2.3.2.2 Relative sensitivity 2.3.2.3 Evacuated systems 2.3.2.4 Pressurized systems; ambient fluids, tracer fluids 2.3.2.5 Locating leaks 2.3.2.6 Standardization 2.3.3 Test result interpretation 2.3.4 Essentials of safety 2.3.5 Test equipment 2.3.6 Applications 2.3.6.1 Piping and pressure vessels 2.3.6.2 Evacuated systems 2.3.6.3 Low-pressure fluid containment vessels, pipes, and tubing 2.3.6.4 Hermetic seals 2.3.6.5 Electrical and electronic components

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Liquid Penetrant Testing (PT)

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Magnetic Flux Leakage Testing (MFL)
2.11 Magnetic Flux Leakage Testing (MFL) 2.11.1 Fundamentals 2.11.1.1 Magnetic field principles 2.11.1.2 Magnetization by means of electric current 2.11.1.3 Flux leakage 2.11.2 MFL 2.11.2.1 Basic types of equipment and inspection materials 2.11.2.2 Types of discontinuities found by MFL 2.11.2.3 Sensors used in MFL 2.11.3 Applications 2.11.3.1 Wire rope inspection 2.11.3.2 Pipe body inspection 2.11.3.3 Tank floor/steel plate inspection

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Magnetic Particle Testing (MT)
2.5 Magnetic Particle Testing (MT) 2.5.1 Fundamentals 2.5.1.1 Magnetic field principles 2.5.1.2 Magnetization by means of electric current 2.5.1.3 Demagnetization 2.5.2 MT 2.5.2.1 Basic types of equipment and inspection materials 2.5.2.2 Test results interpretation; discontinuity indications 2.5.2.3 Applications 2.5.2.3.1 Welds 2.5.2.3.2 Castings 2.5.2.3.3 Wrought metals 2.5.2.3.4 Machined parts 2.5.2.3.5 Field applications

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Neutron Radiography (NR)
2.6 Neutron Radiographic Testing (NR) 2.6.1 Fundamentals 2.6.1.1 Sources 2.6.1.1.1 Isotopic 2.6.1.1.2 Neutron 2.6.1.2 Detectors 2.6.1.2.1 Imaging 2.6.1.2.2 Nonimaging 2.6.1.3 Nature of penetrating radiation and interactions with matter 2.6.1.4 Essentials of safety 2.6.2 NR 2.6.2.1 Basic imaging considerations 2.6.2.2 Test result interpretation; discontinuity indications 2.6.2.3 Systems factors (source/test object/ detector interactions) 2.6.2.4 Applications 2.6.2.4.1 Explosives and pyrotechnic devices 2.6.2.4.2 Assembled components 2.6.2.4.3 Bonded components 2.6.2.4.4 Corrosion detection 2.6.2.4.5 Nonmetallic materials

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Radiographic Testing (RT)
2.7.1 Fundamentals 2.7.1.1 Sources 2.7.1.2 Detectors 2.7.1.2.1 Imaging 2.7.1.2.2 Nonimaging 2.7.1.3 Nature of penetrating radiation and interactions with matter 2.7.1.4 Essentials of safety 2.7.2 RT 2.7.2.1 Basic imaging considerations 2.7.2.2 Test result interpretation; discontinuity indications 2.7.2.3 Systems factors (source/test object/ detector interactions) 2.7.2.4 Applications 2.7.2.4.1 Castings 2.7.2.4.2 Welds 2.7.2.4.3 Assemblies 2.7.2.4.4 Electronic components 2.7.2.4.5 Field inspections

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS -Thermal/Infrared Testing (IR)
2.8 Thermal/Infrared Testing (IR) 2.8.1 Fundamentals 2.8.1.1 Principles and theory of IR 2.8.1.2 Temperature measurement principles 2.8.1.3 Proper selection of IR technique 2.8.2 Equipment/materials 2.8.2.1 Temperature measurement equipment 2.8.2.2 Heat flux indicators 2.8.2.3 Noncontact devices 2.8.2.4 Contact temperature indicators 2.8.2.5 Noncontact pyrometers 2.8.2.6 Line scanners 2.8.2.7 Thermal imaging 2.8.3 Applications 2.8.3.1 Exothermic or endothermic investigations 2.8.3.2 Friction investigations 2.8.3.3 Fluid flow investigations 2.8.3.4 Thermal resistance investigations 2.8.3.5 Thermal capacitance investigations 2.8.4 Interpretation and evaluation

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Ultrasonic Testing (UT)
2.9 Ultrasonic Testing (UT) 2.9.1 Fundamentals 2.9.1.1 Wave propagation 2.9.1.1.1 Sound fields 2.9.1.1.2 Wave travel modes 2.9.1.1.3 Refraction, reflection, scattering, and attenuation 2.9.1.2 Transducers and sound beam coupling 2.9.2 UT 2.9.2.1 Basic types of equipment 2.9.2.2 Reference standards 2.9.2.3 Test result interpretation; discontinuity indications 2.9.2.4 System factors 2.9.2.5 Applications 2.9.2.5.1 Flaw detection and evaluation 2.9.2.5.2 Thickness measurement 2.9.2.5.3 Bond evaluation 2.9.2.5.4 Process control 2.9.2.5.5 Castings 2.9.2.5.6 Weldments

CHAPTER 4- GENERAL APPLICATIONS OF NDT METHODS – Visual Testing (VT)

CHAPTER 5- MATERIALS AND PROCESSES (Chapter 1: Manufacturing and Materials)

CHAPTER 5- MATERIALS AND PROCESSES (Chapter 2: Classification, Structure, and Solidification of Materials)

CHAPTER 5- MATERIALS AND PROCESSES

CHAPTER 5- MATERIALS AND PROCESSES

CHAPTER 5- MATERIALS AND PROCESSES

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