Oklahoma Refrigeration Journeyman Exam Book Package

Prepare for the Oklahoma Refrigeration Journeyman examination with a focused exam book package built around the primary technical references used for this Oklahoma mechanical licensing exam. This package gives candidates the books needed to study refrigeration theory, electrical knowledge and controls, refrigerants, piping, refrigeration equipment, troubleshooting, system operation, installation, maintenance, repair, and construction safety.

The Oklahoma Refrigeration Journeyman Exam Book Package includes the International Mechanical Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA).

The Oklahoma Refrigeration Journeyman exam requires candidates to understand how refrigeration systems operate as complete systems. That means being comfortable with refrigerant behavior, electrical controls, compressors, condensers, evaporators, valves, expansion devices, piping, troubleshooting, and safety rather than studying each topic in isolation.

The examination is open book, making reference familiarity an important part of preparation. Candidates should work directly with the listed books throughout their study period so they become comfortable locating mechanical code requirements, refrigeration concepts, electrical-control information, component data, troubleshooting guidance, and OSHA safety requirements.

This exam book package is designed to give candidates a practical foundation for studying the subjects covered on the Oklahoma Refrigeration Journeyman examination. Regular use of the references can help candidates build both technical knowledge and stronger open-book navigation habits before test day.

Exam Details

The Oklahoma Refrigeration Journeyman examination tests knowledge of the operation, installation, maintenance, repair, fabrication, alteration, and extension of refrigeration systems. The scope includes electrical components, piping, refrigerants, and refrigeration equipment while working within Oklahoma's mechanical licensing structure.

The examination contains 60 questions. Candidates are allowed 150 minutes to complete the test. The required passing score is 70%, with a passing raw score of 42 correct answers.

The exam is divided into six primary content areas:

• Electrical Knowledge and Controls: 15 questions
• Refrigerants: 17 questions
• Piping: 3 questions
• Refrigeration Equipment and Components: 15 questions
• Refrigeration Systems Operations: 5 questions
• Safety: 5 questions

Refrigerants is the largest individual examination category. Candidates should understand refrigerant types, refrigeration systems, pressure-temperature relationships, and the basic theory behind how refrigerant absorbs and rejects heat during the refrigeration cycle.

Electrical Knowledge and Controls is another major section. Topics include general electrical theory, motors, AC and DC circuits, meters, controls, and relays. Refrigeration equipment relies heavily on electrical systems, so candidates should be able to connect electrical operation with refrigeration-system performance.

Refrigeration Equipment and Components also accounts for 15 questions. Candidates should study compressors, condensers, evaporators, receivers, accumulators, valves, expansion devices, dryers, and the way these components work together.

Refrigeration Systems Operations covers system troubleshooting, operation, installation, maintenance, and repair. Candidates should understand how system symptoms can relate to refrigerant conditions, electrical controls, piping, airflow, and component performance.

Safety covers workplace and construction safety requirements relevant to refrigeration work. OSHA preparation should be included as part of the overall study plan rather than treated as a separate last-minute topic.

Open Book Test

The Oklahoma Refrigeration Journeyman examination is an open-book test. Candidates may use approved references during the examination according to the testing provider's rules.

The primary references associated with this exam include the International Mechanical Code, 2018, Modern Refrigeration and Air Conditioning, and applicable 29 CFR Part 1926 OSHA construction safety regulations.

Approved references may be highlighted, underlined, and indexed before the examination. Permanent tabs are permitted for organizing approved books. Temporary tabs such as Post-it notes are not allowed.

Reference books may not contain added written notes before or during the examination session. Candidates should make sure their materials comply with applicable exam-center requirements.

The open-book format makes navigation skills important. With 60 questions and 150 minutes available, candidates have an average of two and a half minutes per question. Some questions may be answered quickly from trade knowledge, while others may require a detailed reference lookup.

A useful exam strategy is to identify the subject before opening a book. A mechanical-code question may lead to the International Mechanical Code. A refrigeration theory, electrical-control, equipment, or troubleshooting question may be addressed in Modern Refrigeration and Air Conditioning. A construction safety question may require OSHA 29 CFR Part 1926.

Practicing this process during study can help candidates reduce unnecessary searching and become more efficient when working with multiple references.

Licensing Steps

1. Gain qualifying mechanical trade experience. Oklahoma Refrigeration Journeyman applicants must meet the applicable experience requirements for mechanical licensing.
2. Maintain applicable apprentice registration. Mechanical experience gained in Oklahoma and used toward licensure must satisfy applicable registration and documentation requirements.
3. Meet the journeyman qualification requirements. Applicants must satisfy the age, experience, education, military, or other qualifying pathway recognized by Oklahoma.
4. Submit the mechanical license application. Oklahoma mechanical licensing is administered through the Oklahoma Construction Industries Board.
5. Receive authorization to test. Applicants must receive approval before scheduling the Refrigeration Journeyman examination.
6. Prepare for the examination. Study electrical controls, refrigerants, piping, refrigeration components, system operation, troubleshooting, safety, and reference navigation.
7. Take the Refrigeration Journeyman examination. Approved candidates complete the required licensing exam through the designated testing provider.
8. Complete remaining licensing requirements. Candidates must satisfy applicable Oklahoma requirements for issuance and maintenance of the Refrigeration Journeyman license.

State Requirements

Oklahoma mechanical journeyman licensing is administered through the Oklahoma Construction Industries Board. Applicants must be at least 18 years old and meet one of the qualifying experience or education pathways established for mechanical licensing.

A standard qualification pathway requires three years of verifiable mechanical trade experience in the category for which the applicant is seeking licensure.

Oklahoma also recognizes qualifying education combined with mechanical trade experience. Approved education may substitute for a portion of the required field experience when the training meets state requirements.

Equivalent mechanical experience gained while serving in the U.S. military may also qualify. Oklahoma may also recognize a current out-of-state mechanical license when it is in good standing and satisfies applicable qualification standards.

For Oklahoma mechanical licensing purposes, one year of verifiable experience generally equals 2,000 hours of qualifying mechanical trade work.

The Refrigeration Journeyman classification authorizes the license holder to install, alter, modify, service, maintain, or repair refrigeration products, systems, or equipment, including associated process piping, within the scope of Oklahoma mechanical licensing requirements.

A Refrigeration Journeyman performs work while employed within the appropriate contractor structure and must remain within the scope of the refrigeration classification. Passing the examination is one part of the overall licensing process.

Mechanical journeymen are also responsible for maintaining their license and complying with applicable Oklahoma mechanical laws, regulations, and continuing education requirements.

Reference Books

• International Mechanical Code, 2018
  This mechanical code reference addresses requirements affecting refrigeration and other mechanical systems. It includes provisions related to equipment installation, refrigeration systems, piping, ventilation, equipment locations, and mechanical-system requirements. Candidates should practice navigating the code and locating applicable definitions, chapters, and technical provisions.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This comprehensive technical reference covers refrigeration theory, refrigerants, electrical fundamentals, motors, controls, compressors, condensers, evaporators, valves, piping, expansion devices, system installation, troubleshooting, maintenance, and repair. It supports preparation across many of the largest content areas on the Refrigeration Journeyman examination.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This federal construction safety reference contains OSHA requirements applicable to construction work. It supports preparation for workplace safety topics involving training, ventilation, first aid, personal protective equipment, hazardous materials, lockout/tagout procedures, ladders, and other construction hazards.

These three references serve different purposes during preparation. Candidates should become familiar with which book is most useful for each type of question and practice switching between them efficiently.

Exam Room Approved Books

• International Mechanical Code, 2018
  The 2018 International Mechanical Code with applicable Oklahoma revisions is used for mechanical code questions on the Oklahoma Refrigeration Journeyman examination.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This refrigeration reference supports exam preparation in refrigeration theory, electrical controls, equipment, system operation, troubleshooting, maintenance, and repair.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This OSHA construction safety reference is used for applicable workplace and construction safety topics.

Candidates should bring only references that comply with current examination-center rules. Approved books may be highlighted, underlined, and indexed with permanent tabs when prepared in accordance with testing requirements.

Test Information and Study Materials

A strong Oklahoma Refrigeration Journeyman study plan should give significant attention to refrigerants, electrical knowledge and controls, and refrigeration equipment and components because these categories make up most of the examination.

Refrigerants account for 17 questions. Candidates should review refrigerant types, system behavior, pressure-temperature relationships, and refrigeration theory. Understanding what happens to refrigerant as it moves through each stage of the cycle can make technical questions easier to analyze.

Electrical Knowledge and Controls accounts for 15 questions. Review voltage, current, resistance, AC and DC circuits, motors, electrical meters, controls, and relays. Candidates should understand how electrical components start, stop, regulate, and protect refrigeration equipment.

Electrical troubleshooting should also be part of preparation. Refrigeration problems can be caused by electrical faults, mechanical issues, or refrigerant-system conditions, so candidates should be prepared to evaluate how these systems interact.

Refrigeration Equipment and Components also accounts for 15 questions. Study compressors, condensers, evaporators, receivers, accumulators, valves, expansion devices, and dryers. Learn the purpose of each component and understand what can happen when a component fails or operates improperly.

For compressors, review their role in circulating refrigerant and raising refrigerant pressure. For condensers, understand how heat is rejected. For evaporators, study how heat is absorbed from the conditioned space or process.

Review expansion devices and their role in regulating refrigerant flow. Candidates should also understand the purpose of receivers, accumulators, dryers, and common refrigeration valves.

Piping preparation should include supports, materials, sizes, and pressure testing. Proper refrigeration piping affects system performance, oil return, refrigerant flow, serviceability, and system reliability.

Refrigeration Systems Operations includes troubleshooting, normal system operation, installation, maintenance, and repair. Candidates should practice evaluating system symptoms and connecting them to possible causes.

Rather than memorizing isolated troubleshooting answers, use a system-based approach. Consider refrigerant pressures, temperatures, airflow, electrical controls, compressor operation, condenser performance, evaporator conditions, expansion devices, and piping together.

Safety preparation should include the OSHA subjects applicable to the examination. Review safety training, ventilation, first aid, personal protective equipment, hazardous and toxic materials, lockout/tagout procedures, and ladder safety.

Mechanical code navigation should also be practiced regularly. Use the International Mechanical Code to locate refrigeration provisions, definitions, equipment requirements, piping rules, and other mechanical requirements.

When working with Modern Refrigeration and Air Conditioning, practice finding technical information by chapter, index, and subject. Use the book for refrigeration theory, electrical controls, components, troubleshooting, and service-related topics.

Use OSHA 29 CFR Part 1926 for safety-related lookups. Become familiar with the organization of the safety material so construction-safety questions can be researched efficiently.

Timed practice can help candidates build appropriate exam pacing. The examination allows 150 minutes for 60 questions, so candidates should practice answering familiar questions efficiently while reserving additional time for reference lookups and more difficult troubleshooting problems.

Reference navigation should be treated as a skill. Identify the subject first, choose the most appropriate book, and then locate the applicable information. Repeated practice can make this process more natural before exam day.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Oklahoma Refrigeration Journeyman candidates through organized study guidance, refrigeration-focused review, practice-oriented preparation, reference navigation, and a structured approach to licensing exam preparation.

This exam book package gives candidates access to the primary technical references associated with the Refrigeration Journeyman examination. Working directly from the books allows candidates to study the same types of material they may need to navigate during an open-book test.

1 Exam Prep encourages candidates to organize preparation around the major exam categories. Refrigerants, electrical controls, refrigeration equipment, piping, system operation, troubleshooting, and safety can be studied separately before being combined into broader review sessions.

Practice-oriented preparation can help identify weaker subjects. Candidates who need more help with electrical controls can spend additional time on circuits, motors, meters, relays, and control sequences. Candidates who need more refrigeration theory review can focus on refrigerant behavior, pressures, temperatures, and the refrigeration cycle.

Reference navigation is also an important part of the preparation process. Candidates can practice determining whether a question is best addressed through the International Mechanical Code, Modern Refrigeration and Air Conditioning, or OSHA 29 CFR Part 1926.

Candidates who need more troubleshooting practice can focus on how compressors, condensers, evaporators, expansion devices, controls, airflow, refrigerant conditions, and piping interact. Understanding those relationships can make system-operation questions easier to analyze.

The goal is to build stronger familiarity with the technical material, develop a consistent study routine, and become more comfortable using the approved references. 1 Exam Prep supports candidates with a trade-focused preparation structure without guaranteeing examination or licensing outcomes.

Frequently Asked Questions

What books are included in the Oklahoma Refrigeration Journeyman Exam Book Package?

The package includes the International Mechanical Code, 2018; Modern Refrigeration and Air Conditioning, 22nd Edition; and Code of Federal Regulations - 29 CFR Part 1926 (OSHA).

Is the Oklahoma Refrigeration Journeyman exam open book?

Yes. The Oklahoma Refrigeration Journeyman examination is an open-book test using approved reference materials.

How many questions are on the exam?

The examination contains 60 questions.

How much time is allowed for the exam?

Candidates are allowed 150 minutes to complete the examination.

What score is required to pass?

The required passing score is 70%, with a passing raw score of 42 correct answers.

What is the largest exam category?

Refrigerants is the largest individual category with 17 questions. Electrical Knowledge and Controls and Refrigeration Equipment and Components each contain 15 questions.

What refrigeration equipment should I study?

Study compressors, condensers, evaporators, receivers, accumulators, valves, expansion devices, and dryers, along with how these components work together in a complete refrigeration system.

Why is the International Mechanical Code included?

The International Mechanical Code provides mechanical and refrigeration code requirements that candidates should understand and practice navigating before the examination.

Why is Modern Refrigeration and Air Conditioning included?

Modern Refrigeration and Air Conditioning supports preparation in refrigeration theory, electrical controls, refrigerants, equipment, piping, installation, maintenance, troubleshooting, and repair.

Why is OSHA 29 CFR Part 1926 included?

OSHA 29 CFR Part 1926 contains construction safety standards applicable to mechanical and refrigeration work and supports preparation for safety-related exam questions.

Can approved exam books be highlighted and tabbed?

Approved references may be highlighted, underlined, and indexed with permanent tabs when prepared according to the testing provider's rules.

What does an Oklahoma Refrigeration Journeyman license cover?

The classification allows the license holder to install, alter, modify, service, maintain, or repair refrigeration products, systems, or equipment, including associated process piping, within Oklahoma mechanical licensing requirements.