Oklahoma Refrigeration Journeyman- Online Exam Prep Course

Prepare for the Oklahoma Refrigeration Journeyman examination with an online exam prep course focused on refrigeration systems, electrical knowledge and controls, refrigerants, piping, compressors, condensers, evaporators, valves, expansion devices, troubleshooting, system operation, installation, maintenance, repair, and jobsite safety. This preparation is designed for mechanical professionals pursuing the Oklahoma Refrigeration Journeyman license administered through the Oklahoma Construction Industries Board.

The Oklahoma Refrigeration Journeyman classification is a specialized mechanical license covering refrigeration products, systems, equipment, and associated process piping. The license authorizes a qualified journeyman to install, alter, modify, service, maintain, or repair refrigeration equipment within the scope established by Oklahoma law while working for a licensed Refrigeration Contractor.

The current Oklahoma Refrigeration Journeyman examination is administered by PSI after the Oklahoma Construction Industries Board determines that an applicant meets the qualifications for examination. The exam contains 60 scored questions, allows 150 minutes, and requires a minimum score of 70%. Candidates currently need 42 correct answers to meet the passing standard.

The examination places substantial emphasis on both practical refrigeration knowledge and electrical controls. Candidates must understand how refrigeration systems operate as a complete system rather than studying individual components in isolation. Topics include motors, electrical circuits, meters, relays, refrigerants, piping materials, pressure tests, valves, compressors, condensers, evaporators, receivers, accumulators, expansion devices, dryers, troubleshooting, system installation, maintenance, repair, and workplace safety.

This online exam prep course uses the International Mechanical Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA) to support organized preparation for the current Oklahoma examination.

Exam Details

The Oklahoma Refrigeration Journeyman examination tests a candidate's knowledge of the operation, installation, maintenance, repair, fabrication, alteration, and extension of refrigeration systems. The examination includes electrical components, piping, refrigerants, refrigeration components, and system operation encountered while working in the refrigeration trade.

The current test contains 60 scored questions. Candidates receive 150 minutes, or two and one-half hours, to complete the examination. A minimum score of 70% is required, which equals 42 correct answers.

Electrical Knowledge and Controls contains 15 questions and represents one of the largest examination categories. Topics include general electrical theory and knowledge, motors, AC and DC circuits, meters, controls, and relays. Refrigeration technicians routinely work with electrically operated components, so candidates should understand both system operation and the electrical principles behind those components.

Refrigerants contains five questions. Candidates should study refrigerant types, refrigerant systems, and refrigerant theory. Preparation should include an understanding of how refrigerant conditions change through the refrigeration cycle and how those changes relate to system performance.

Piping contains five questions covering piping supports, piping materials and sizes, and pressure testing. Candidates should understand how refrigeration piping is selected, installed, supported, and tested as part of a complete system.

Refrigeration Equipment and Components is the largest category with 17 questions. Topics include valves, compressors, condensers, evaporators, receivers, accumulators, expansion devices, and dryers. Because more than one-quarter of the examination falls in this category, candidates should devote significant study time to component purpose, location, operation, and interaction.

Refrigeration Systems Operations contains 15 questions. This section addresses system troubleshooting, system operation, and system installation, maintenance, and repair. Candidates should be prepared to analyze symptoms, understand the refrigeration cycle, recognize abnormal operating conditions, and determine appropriate service approaches.

Safety contains three questions. Subjects include safety training requirements, ventilation requirements, first-aid kit requirements, personal protective equipment, material safety information, work around toxic materials, lockout/tagout procedures, and ladders.

Open Book Test

The Oklahoma Refrigeration Journeyman examination is an open-book test. Candidates are responsible for bringing the approved references they intend to use during the examination.

The current examination reference list includes the International Mechanical Code, 2018 Edition, with Oklahoma revisions. For code questions, candidates must use the code edition identified for the examination.

The PSI reference list identifies earlier editions of Modern Refrigeration and Air Conditioning among the source materials used to develop the examination and states that later editions of non-code references are allowed in the testing area. The 22nd Edition supplied with this course is therefore suitable as a later edition of that approved non-code reference.

The current reference list also allows Code of Federal Regulations - 29 CFR Part 1926 (OSHA) with the latest available amendments or the applicable PSI selections.

Approved reference materials may be highlighted, underlined, and indexed before the examination. Permanent tabs are allowed. Temporary tabs such as Post-it notes are prohibited.

References may not contain written notes before the examination, and candidates may not write in their references during the testing session. Additional loose papers are not allowed with the approved reference materials.

Downloaded references must be properly secured. Current PSI rules permit qualifying downloaded references when they are spiral bound, hole-punched and placed in a binder, or stapled in the left-hand corner.

A silent, battery-operated, non-printing, non-programmable calculator without an alphabetic keyboard may be used during the examination.

With 60 questions in 150 minutes, candidates have an average of approximately two and one-half minutes per question. The most effective open-book strategy is to learn the organization of the references before test day and use them to confirm information rather than attempting to research every question from the beginning.

Licensing Steps

1. Begin gaining qualifying mechanical experience. Work in the refrigeration category under the appropriate Oklahoma mechanical licensing structure.
2. Register as a mechanical apprentice when required. Oklahoma experience intended to count toward journeyman licensing generally must be properly documented through apprentice registration unless an applicable legal exception applies.
3. Work under an active licensed Mechanical Contractor. Mechanical apprenticeship provides supervised field experience needed to develop the skills required for journeyman licensing.
4. Accumulate qualifying refrigeration experience. The standard journeyman route requires three years of verifiable mechanical experience in the license category being pursued.
5. Use qualifying mechanical education when applicable. Approved formal education may substitute for a portion of the experience requirement under Oklahoma rules.
6. Maintain experience documentation. Keep employment records, apprentice registrations, school records, transcripts, and other documentation needed to establish your qualifications.
7. Submit the Mechanical License Application. Apply to the Oklahoma Construction Industries Board for Refrigeration Journeyman examination eligibility.
8. Receive approval to test. The Board reviews your qualifications before authorizing the examination.
9. Schedule the examination through PSI. After receiving approval, select an available examination appointment.
10. Prepare your reference materials. Organize the 2018 International Mechanical Code, Modern Refrigeration and Air Conditioning, and OSHA material in accordance with current testing rules.
11. Study the six examination categories. Give particular attention to refrigeration equipment and components, electrical knowledge and controls, and refrigeration system operation.
12. Take the Oklahoma Refrigeration Journeyman examination. Complete 60 scored questions within the 150-minute time limit.
13. Earn the required passing score. Candidates currently need at least 70%, or 42 correct answers.
14. Complete the licensing process. Follow the Oklahoma Construction Industries Board requirements for issuance and maintenance of the Refrigeration Journeyman license.

State Requirements

Applicants for an Oklahoma mechanical journeyman license must be at least 18 years old.

The standard qualification route requires three years of verifiable experience in the mechanical trade in the category for which the applicant is applying. For a Refrigeration Journeyman applicant, the experience must support qualification in refrigeration work.

Oklahoma defines one year of verifiable mechanical experience as 2,000 hours. Verifiable experience generally consists of qualifying mechanical work obtained while employed by a licensed Mechanical Contractor or through another method accepted under Oklahoma rules.

Mechanical experience obtained in Oklahoma generally must be supported by appropriate apprentice registration for the period in which the work was performed unless the experience was lawfully obtained under an applicable exemption.

Oklahoma also allows approved mechanical education to substitute for portions of the experience requirement. An approved program containing at least 1,000 hours may be combined with one year of verifiable mechanical experience.

An approved program containing at least 500 hours may be combined with two years of experience. A qualifying program containing at least 375 hours may be combined with two and one-fourth years of experience, while a 334-hour program may be combined with two and one-third years of experience.

An approved program containing at least 250 hours may be combined with two and one-half years of verifiable mechanical experience.

Equivalent verifiable mechanical experience obtained while serving in the United States military may also be considered under Oklahoma's journeyman qualification requirements.

The Oklahoma Refrigeration Journeyman license authorizes the licensee to install, alter, modify, service, maintain, or repair refrigeration products, refrigeration systems, and refrigeration equipment, including associated process piping.

A Refrigeration Journeyman performs authorized refrigeration work while employed by the appropriate licensed Mechanical Contractor. The journeyman credential does not independently provide the contractor authority required to operate as a Refrigeration Contractor.

Oklahoma mechanical journeymen are required to maintain continuing education for license renewal. The current requirement is six hours of approved continuing education during the 36 months preceding license expiration.

For applicants who do not pass the examination on the first attempt, Oklahoma's current testing rules require a 30-day waiting period after the first failure. For subsequent failures, the waiting period is generally 90 days.

Reference Books

• International Mechanical Code, 2018
  The 2018 International Mechanical Code with Oklahoma revisions is the code reference identified for the current Refrigeration Journeyman examination. It supports preparation involving refrigeration systems, machinery rooms, piping, equipment installation, safety-related mechanical requirements, and other applicable code provisions.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This comprehensive trade reference supports preparation involving refrigeration theory, electrical principles, motors, controls, refrigerants, compressors, condensers, evaporators, valves, metering devices, piping, troubleshooting, service procedures, installation, and system operation. Current PSI rules allow later editions of non-code references in the examination area.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction-safety reference supports preparation for safety subjects including personal protective equipment, ladders, hazardous materials, training requirements, ventilation, lockout/tagout, and related workplace requirements.

Test Information and Study Materials

A productive Oklahoma Refrigeration Journeyman study plan should reflect the distribution of questions on the examination. More than three-quarters of the test is concentrated in electrical knowledge and controls, refrigeration equipment and components, and refrigeration system operations.

Prioritize Refrigeration Equipment and Components. This category contains 17 questions, the most of any exam section. Review compressors, condensers, evaporators, receivers, accumulators, valves, expansion devices, and dryers. Understand not only what each component is called but what it does within the refrigeration cycle.

Build strong Electrical Knowledge and Controls. Fifteen questions cover electrical principles. Review motors, AC and DC circuits, meters, controls, relays, and fundamental electrical theory. Practice interpreting how electrical controls affect refrigeration-system operation.

Practice Refrigeration System Troubleshooting. Another 15 questions involve system operation, troubleshooting, installation, maintenance, and repair. Study symptoms and likely causes instead of memorizing isolated facts. Understand how pressure, temperature, refrigerant flow, electrical operation, and component condition interact.

Review Refrigerants. Study refrigerant types, refrigeration-system applications, and refrigerant theory. Be comfortable with the basic refrigeration cycle and the changes that occur as refrigerant passes through the compressor, condenser, metering device, and evaporator.

Study Refrigeration Piping. Review piping supports, materials, sizing considerations, and pressure testing. Understand why piping practices matter for system performance and reliability.

Use the International Mechanical Code efficiently. Practice finding refrigeration provisions, machinery-room requirements, equipment installation rules, and piping-related requirements in the 2018 IMC.

Review OSHA safety subjects. Know where to locate information involving PPE, ladders, toxic materials, workplace ventilation, safety training, and related construction-safety requirements.

Practice with your actual references. Preparing with the same books you plan to bring to the examination helps you build familiarity with chapters, indexes, tables, diagrams, and terminology.

Use permanent tabs strategically. Organize frequently used sections without filling the book with unnecessary markers. A manageable system of permanent tabs can improve open-book navigation.

Practice timed sessions. Work through 60-question study sessions with a 150-minute limit. Learn when to move forward from a difficult question and return after completing easier items.

Review mistakes by category. Separate missed questions into electrical controls, refrigerants, piping, components, system operations, and safety. This makes it easier to direct future study toward the areas where improvement is most needed.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Oklahoma Refrigeration Journeyman candidates organize their preparation around the technical subjects and reference materials associated with the current licensing examination.

The course provides trade-focused review of refrigeration systems rather than treating the exam as a collection of unrelated code questions. Candidates can strengthen their understanding of compressors, condensers, evaporators, valves, refrigerants, piping, controls, motors, meters, system operation, and troubleshooting.

Reference-navigation preparation helps students become more comfortable using the 2018 International Mechanical Code, Modern Refrigeration and Air Conditioning, and OSHA material during an open-book examination.

Practice-oriented study also helps reinforce the relationship between refrigeration theory and real system behavior. Understanding how components interact can make troubleshooting and system-operation questions easier to analyze.

Organized preparation gives candidates a clear way to identify weak subjects, focus on high-value examination categories, improve reference navigation, and develop better pacing for the 150-minute test.

1 Exam Prep provides structured study guidance, refrigeration-focused review, electrical and control preparation, troubleshooting practice, reference navigation, safety review, and confidence-building study structure to support professionals working toward the Oklahoma Refrigeration Journeyman license.

FAQ Section

Who licenses Refrigeration Journeymen in Oklahoma?

The Oklahoma Construction Industries Board administers the state's mechanical licensing program, including the Refrigeration Journeyman classification.

Who administers the Oklahoma Refrigeration Journeyman exam?

PSI currently administers the examination after the Oklahoma Construction Industries Board approves the applicant's eligibility.

Is the Oklahoma Refrigeration Journeyman exam open book?

Yes. The current examination is open book and permits approved references under PSI testing rules.

How many questions are on the exam?

The current Oklahoma Refrigeration Journeyman examination contains 60 scored questions.

How much time is allowed?

Candidates currently receive 150 minutes, or two and one-half hours.

What score is required to pass?

The current passing requirement is 70%, which equals 42 correct answers.

What is the largest exam category?

Refrigeration Equipment and Components is the largest category with 17 questions.

How many electrical questions are on the exam?

Electrical Knowledge and Controls contains 15 questions covering electrical theory, motors, AC and DC circuits, meters, controls, and relays.

How many refrigeration system operation questions are included?

Refrigeration Systems Operations contains 15 questions covering troubleshooting, operation, installation, maintenance, and repair.

What code book is used for the Oklahoma Refrigeration Journeyman exam?

The current examination uses the 2018 International Mechanical Code with Oklahoma revisions for code-based questions.

Can Modern Refrigeration and Air Conditioning, 22nd Edition be used?

Yes. The current PSI bulletin permits later editions of non-code references in the test area. The 22nd Edition is a later edition of Modern Refrigeration and Air Conditioning.

Can I highlight and underline my references?

Yes. Approved reference materials may be highlighted, underlined, and indexed before the examination.

Can I use permanent tabs?

Yes. Permanent tabs are allowed. Temporary removable tabs such as Post-it notes are not permitted.

Can I write notes in my exam books?

No. Current testing rules prohibit written notes in approved references before or during the examination.

How much experience is required for an Oklahoma Refrigeration Journeyman license?

The standard pathway requires three years of verifiable mechanical experience in the refrigeration category. Oklahoma also provides approved education-and-experience alternatives.

What does an Oklahoma Refrigeration Journeyman license allow me to do?

The license authorizes qualifying refrigeration work involving installation, alteration, modification, service, maintenance, and repair of refrigeration products, systems, equipment, and associated process piping while working within Oklahoma's licensing requirements.

Does Oklahoma require continuing education for Refrigeration Journeymen?

Yes. Oklahoma mechanical journeymen currently need six hours of approved continuing education during the 36 months preceding license expiration.

What happens if I do not pass the exam?

Current Oklahoma testing rules require a 30-day wait after the first failed attempt. Subsequent failures generally require a 90-day waiting period before retesting.

Does this online exam prep course guarantee a passing score?

No exam-preparation course can guarantee a passing result. This course provides organized refrigeration review, electrical and controls preparation, troubleshooting study, code navigation, safety review, and practice-oriented preparation to support your exam study.