CERTIFIED QUALITY INSPECTOR - Quality excellence to enhance your career and boost your organization's bottom line asq.org/cert
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CERTIFIED
CQI
QUALITY INSPECTOR
Quality excellence to enhance your career
and boost your organization’s bottom line
asq.org/cert
Certification from ASQ is considered a mark of
quality excellence in many industries. It helps you
advance your career, and boosts your organization’s
bottom line through your mastery of quality skills.
Becoming certified as a Quality Inspector confirms
your commitment to quality and the positive impact
it will have on your organization.
Examination
Each certification
candidate is required to
pass an examination that
consists of multiple-choice
questions that measure
comprehension of the
body of knowledge.
2 Certified Quality Inspector
INFORMATION
Certified Quality Inspector
The Certified Quality Inspector (CQI) is an inspector who, in support and
under the direction of quality engineers, supervisors, or technicians, can use
the proven techniques included in the body of knowledge. Under professional
direction, the CQI evaluates hardware documentation, performs laboratory
procedures, inspects products, measures process performance, records data,
and prepares formal reports.
CQI Work Experience
Computer Delivered – The CQI CQI requires two years of work
examination is a one-part, 110- experience, OR successful completion
question, four-and-a-half-hour exam of an ASQ-approved* accredited
and is offered in English only. Of technical/apprenticeship training
these questions, 100 are scored course. If you do not have a high-
and 10 are unscored. school diploma or GED, you must
have THREE additional years
Paper and Pencil – The CQI work experience.
examination is a one-part,
100-question, four-hour exam *Requires preapproval.
and is offered in English only. Please contact cert@asq.org
for more details.
For comprehensive exam information on the Quality Inspector certification,
visit asq.org/cert.
Certified Quality Inspector 3
BODY OF KNOWLEDGE
Certified Quality Inspector (CQI)
Topics in this body of knowledge (BoK) include additional
detail in the form of subtext explanations and the cognitive
level at which the questions will be written. This information
will provide useful guidance for both the Exam Development
Committee and the candidate preparing to take the exam.
The subtext is not intended to limit the subject matter or be
all-inclusive of what might be covered in an exam. It is meant
to clarify the type of content to be included in the exam.
The descriptor in parentheses at the end of each line of
subtext refers to the maximum cognitive level at which the
topic will be tested. A complete description of cognitive
levels is provided at the end of this document.
NOTE: Approximately 20% of the questions
in each exam will require calculation.
I. Technical Mathematics D. Basic Trigonometry
Solve for angles and lengths using
(19 Questions) trigonometric functions such as sine,
A. Basic Shop Math cosine, tangent, and the Pythagorean
theorem. (Apply)
Solve basic shop math problems using
addition, subtraction, multiplication,
division of fractions and decimals, E. Measurement Systems
squares, and square roots. Use meth- Convert units within and between
ods such as truncating and rounding English and metric measurement
to obtain significant digits for positive systems (SI) such as inch to micro-
and negative numbers. (Apply) inch, liter to quart, and meter to
millimeter. (Apply)
B. Basic Algebra
Solve or simplify first-degree and F. Numeric Conversions
single-variable equations. (Apply) Use various numbering methods
such as scientific notation, decimals,
C. Basic Geometry and fractions, and convert values
between these systems. (Apply)
Calculate general parameters such
as area, circumference, perimeter,
and volume for basic geometric
shapes. Calculate complementary
and supplementary angles. (Apply)
4 Certified Quality Inspector
II. Metrology (26 Questions) C. Gauge Selection,
Handling, and Use
A. Common Gauges and
1. 10:1 rule
Measurement Instruments
Understand the 10:1 rule:
1. Variable gauges inspection measurements require
Identify and use variable gauges, better than the tolerance of a
including micrometers, calipers, dimension by a factor of 10, and
dial indicators, and Coordinate calibration standards require better
Measuring Machines (CMMs). than the inspection measurements
Understand linear scales, such as by a factor of 10. (Understand)
steel rule, and gauge blocks. Use
borescopes, thermometers, and 2. Gauge selection
temperature probes. (Apply) Select gauges according to
the feature or characteristic to
2. Attribute gauges be measured, the applicable
Identify and use attribute gauges, tolerance and the accuracy,
including thread plugs, progressive environment, and the resolution
rings, flush pins, pin gauges, and and capability of the test
radius gauges. (Apply) instrument. Determine whether
the type of measurement should
3. Transfer gauges be direct, differential, or transfer.
Identify and use transfer gauges, (Apply)
including small-hole gauges,
telescoping gauges, and spring 3. Gauge handling,
calipers. (Apply) preservation, and storage
Identify and apply various
4. Measurement scales methods of cleaning, handling,
Describe and distinguish between and storing gauges. (Apply)
dial, digital, and vernier scales.
(Remember) 4. Gauge correlation
Identify and apply methods
B. Special Gauges and Applications for establishing the correlation
Identify and describe the following between measurement instruments
basic tools and components. such as gauge-to-gauge or
(Remember) manual-to-automated process.
(Apply)
1. Electronic gauging tools:
oscilloscopes, multimeters, D. Surface Plate Tools
and pyrometers. and Techniques
2. Automatic gauging components: 1. Surface plate equipment
machine vision, ultrasonic, X-ray, Select and use height gauges,
and laser. V-blocks, and other indicators to
measure various types of features.
3. Pneumatic gauging components: Understand the care, cleaning,
air columns, probes, and rings. calibration, and lapping of a
surface plate. (Apply)
4. Force gauging: torque wrenches.
5. Environment instrumentation: 2. Angle measurement instruments
hygrometers, chart recorders, Identify and use protractors, sine
and data loggers. bars, and angle blocks. (Apply)
Certified Quality Inspector 5
E. Specialized Inspection Equipment 2. Calibration standards
1. Measuring mass and equipment traceability
Describe and apply weights, Describe the hierarchy of
balances, and scales. (Apply) standards, from working standards
through international standards
2. Measuring finish and the documentation process of
Describe and apply profilometers, a measurement device traceable
and fingernail comparators. to the international standards.
(Apply) (Remember)
3. Measuring shape and profile 3. Gauge calibration environment
Describe and apply mechanical Describe the effects that
comparators, roundness testers, environmental conditions have
precision spindles, and profile on the calibration process,
tracers. (Apply) such as temperature, humidity,
vibration, and cleanliness of the
4. Optical equipment gauge. (Apply)
Describe and apply optical 4. Out-of-calibration effects
comparators, optical flats, and
microscopes. (Apply) Describe the effects that out-of-
calibration instruments can have
5. Software-based on product acceptance and the
measurement systems actions to take in response to this
situation. (Apply)
Define and describe the use of
digital cameras, in-line optical
sensors, vision inspection systems G. Measurement System
(white light/blue light), articulating Analysis (MSA)
arms, laser trackers, contracers, Define and describe the following
and other digital systems for elements of MSA. (Remember)
product inspection. Recognize
software limitations with regard to 1. Bias
locating functional datums, target 2. Stability
points and areas, hole positions,
and the basic operation of the x, 3. Precision
y, and z axes. (Understand) 4. Accuracy
6. Measuring inclination 5. Linearity
Define and describe the 6. Repeatability and
measurement of the slope reproducibility (R&R) studies
or slant of various equipment
(mechanical/laser). (Understand)
III. Inspection and Test
F. Calibration (33 Questions)
1. Calibration systems A. Blueprints, Drawings,
Describe the principles and Geometric Dimensioning
purpose of a calibration system,
including the importance of and Tolerancing (GD&T),
establishing calibration intervals and Model-Based Definitions
and uncertainty. Identify and use 1. Blueprints, engineering drawings,
basic tracking and identification and model-based definitions
methods such as logs, stickers,
Define and interpret various
radio frequency identifications
sections of technical drawings:
(RFID), barcodes, and other
title blocks, tolerances, change
identification codes to control
or revision blocks, including
calibration equipment. (Apply)
notes, scale, and size details.
(Apply)
6 Certified Quality Inspector
2. Terminology and symbols C. Inspection Planning
Define and interpret drawing and Processes
views and details for product
1. Inspection types
specifications or other controlling
documents. Define and use Define and distinguish between
various terms and symbols from inspection types such as incoming
the ASME Y14.5M standard. material, first-article (first-piece),
(Analyze) in-process, and final. (Apply)
3. Position and bonus tolerances 2. Inspection errors
Calculate position and bonus Identify potential inspection errors
tolerances from various drawings. such as bias, fatigue, flinching,
(Analyze) distraction, and poor time man-
agement. (Apply)
4. Part alignment
and datum structure 3. Product traceability
Determine part alignment and Identify methods to trace products
setup using the datum structure. and materials such as age control,
(Analyze) shelf life, first-in first-out (FIFO),
barcoding, date codes, and lot
and part numbering. (Apply)
B. Sampling
Define and interpret the following 4. Identification of
terms related to sampling. (Apply) nonconforming material
1. Acceptance quality limit (AQL) Describe various methods of
identifying nonconforming
2. Random sampling material such as tagging,
3. Lot and sample size labeling, and segregating.
(Apply)
4. Acceptance number
5. Sampling plans
Certified Quality Inspector 75. Level of severity 2. Destructive testing:
Define and describe levels of tensile, force testing, and drop test.
severity (critical, major, and
minor) and apply them to product 3. Functionality testing:
features and defects. (Apply) tension, torque, leak testing,
and compression.
6. Disposition of
nonconforming material 4. Hardness testing:
Describe disposition methods Brinell, Rockwell, durometer, and
including rework, reprocess, micro-hardness scales.
reinspect, scrap, and customer
waiver, as determined by a E. Software for Test Equipment
material review board (MRB) Identify and describe basic
or other authority. (Apply) tools (safeguarding, functional
checks, comparison of test results,
D. Testing Methods identification of attributes and
Define and use the following methods parameters) used to ensure that
in various situations. (Apply) the software for test equipment
adequately and correctly performs
1. Nondestructive testing: its intended functions. (Remember)
X-ray, eddy current, ultrasonic,
dye penetrant, magnetic particle,
optical, visual, and profile.
8 Certified Quality InspectorIV. Quality Assurance 5. Process capability analysis
Define and distinguish between
(22 Questions) Cp, Cpk, Pp, and Ppk studies and
A. Basic Statistics and Applications identify their application to various
types of data. (Understand)
1. Measures of central tendency
Calculate mean, median, and C. Quality Improvement
mode. (Apply)
1. Terms and concepts
2. Measures of dispersion Define basic quality improvement
Calculate range, standard concepts such as defect detection
deviation, and variance. (Apply) and prevention, the cost of poor
quality, total quality management
3. Measures of proportion (TQM), and the importance of
Calculate percentage and ratio customer satisfaction. (Understand)
measures for various data sets.
(Apply) 2. Products and processes
Define and distinguish between
4. Graphical displays products and processes. Describe
Define, interpret, and use scatter the interrelationships of product
diagrams, tally sheets, and bar design, materials used, manu-
charts to display data effectively facturing processes, and final
in various situations. (Apply) output, and how individual steps
in a process can affect the final
5. Normal distribution product or the system as a whole.
Describe various characteristics of (Understand)
a normal distribution: symmetry,
bell curve, and central tendency. D. Quality Audits
(Understand) 1. Types of audits
Define and describe various
B. Statistical Process Control (SPC) types of audits, including internal,
1. Common and external, system, product, and
special cause variation process. (Understand)
Explain the difference between 2. Audit process
these causes of variation. Determine
whether a process is in statistical Define and describe various
control by analyzing data patterns stages of the audit process
(runs, trends, and hugging), and (planning, performance, and
identify what actions should be closure), including audit scope
taken in response. (Evaluate) and purpose, resources needed,
audit schedule, opening meeting,
2. Control limits interviewing, data gathering,
and specification limits document and record review,
analysis of results, closing
Define, describe, and distinguish meeting, audit documentation
between these limits as used in (reporting), recordkeeping, and
SPC. (Apply) verification of corrective actions.
3. Variables charts (Understand)
Identify characteristics and uses 3. Audit tools
of X–R and X–s charts. (Apply) Define and describe the purpose
4. Attributes charts of checklists, log sheets, sampling
plans, record reviews, document
Identify characteristics and uses reviews, and forward- and
of p, np, c, and u charts. (Apply) backward-tracing. (Understand)
Certified Quality Inspector 94. Communication tools G. Resources
and techniques 1. Environmental and
Define and describe the use of safety support
graphs, charts, diagrams, and
Define and use various resources
other aids for written and oral
related to personal and envi-
presentations including interview
ronmental safety: safety data
techniques and listening skills.
sheets (SDS), material data sheet
(Understand)
(MDS), and personal protective
5. Corrective action requests (CARs) equipment (PPE). (Apply)
Describe how CARs from audits 2. Reference documents
can support quality improvement.
Identify and use national and
(Understand)
international standards (ISO,
ANSI, ASTM, QS) and customer
E. Quality Tools and Techniques requirements as authorities that
Define and use the following quality support processes and procedures
tools and techniques. (Apply) used to ensure quality products.
(Apply)
1. Pareto charts
2. Cause and effect diagrams 3. Employees as resources
Describe how employees can
3. Flowcharts be empowered and the value
4. Control charts they add to project teams or
quality improvement teams.
5. Check sheets
Describe typical team roles and
6. Scatter diagrams responsibilities: facilitator, ground
rules, project, or team charter.
7. Histograms
Describe the four stages of team
F. Problem-solving Tools development: forming, storming,
norming, performing. (Remember)
and Continuous Improvement
Techniques 4. Quality documentation
Describe and use the following tools Basic quality documentation
and techniques in various situations. including correct form/revision
(Apply) for the process (ISO 9001,
First Article Inspection Report,
1. Plan-do-check-act (PDCA) or ISIR, PPAPs). Proper usage
plan-do-study-act (PDSA) cycles of policy, procedure, work
2. Lean tools for eliminating waste: instructions and forms, proper
5S, error-proofing, value-stream documentation practices such
mapping; and lean concepts: as document control, filling out
kaizen, flow, pull forms completely, correcting
misspellings, and initialing
3. Six Sigma phases: changes. (Apply)
define, measure, analyze,
improve, control (DMAIC)
4. Failure mode and
effects analysis (FMEA)
5. 8D methodology
6. 5 Whys
7. Fault tree analysis
10 Certified Quality InspectorLEVELS OF COGNITION
Based on Bloom’s Taxonomy—Revised (2001)
In addition to content specifics, the subtext for each topic in this BoK also
indicates the intended complexity level of the test questions for that topic.
These levels are based on “Levels of Cognition” (from Bloom’s Taxonomy—
Revised, 2001) and are presented below in rank order, from least complex
to most complex.
REMEMBER | Recall or recognize terms, EVALUATE | Make judgments about the
definitions, facts, ideas, materials, patterns, value of proposed ideas, solutions, etc.,
sequences, methods, principles, etc. by comparing the proposal to specific
criteria or standards.
UNDERSTAND | Read and understand
descriptions, communications, reports, CREATE | Put parts or elements together
tables, diagrams, directions, regulations, etc. in such a way as to reveal a pattern or
structure not clearly there before; identify
APPLY | Know when and how to use which data or information from a complex
ideas, procedures, methods, formulas, set is appropriate to examine further or
principles, theories, etc. from which supported conclusions can
be drawn.
ANALYZE | Break down information into
its constituent parts and recognize their
relationship to one another and how they
are organized; identify sublevel factors or
salient data from a complex scenario.
Visit asq.org/cert for comprehensive exam information.Enhance your career
with ASQ certification today!
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certification information including:
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