If you’re preparing for the Springfield, Missouri Journeyman Gas Fitter exam (ICC 678_MO_S), the smartest way to start is with the exact reference the exam is built on. This Exam Book Package is centered on the International Fuel Gas Code (IFGC), 2018—the code book used to write the questions, determine the correct answers, and guide how candidates are expected to verify requirements under time pressure.
Gas fitting exams are not won by guesswork. They’re won by candidates who can read a scenario, recognize the system involved, and quickly confirm the controlling rule in the code—especially when a question depends on a definition, a table, a venting configuration, or a sizing method. Even experienced tradespeople can get tripped up when a multiple-choice option sounds “jobsite-right” but doesn’t match the specific code requirement in the IFGC.
This package is designed for a clean and practical prep path: get the correct code book, build confident navigation skills, and prepare the way the ICC exam expects you to perform—steady, accurate, and code-driven. With the correct 2018 IFGC in hand, you’ll study from the same chapter layout, section numbering, and tables you’ll use on exam day, which is essential for speed and confidence.
Whether you’re stepping up from helper-level responsibilities, formalizing your credentials for permitting work, or moving into higher responsibility on fuel gas installations, the goal is the same: understand the code, find answers fast, and walk into the testing center ready to apply your trade knowledge with the book as your authority.
The Springfield, Missouri Journeyman Gas Fitter exam (ICC 678_MO_S) is delivered through the ICC Contractor/Trades testing program at Pearson VUE test centers. The exam is designed to measure how well you apply fuel gas code requirements to real-world job scenarios using the listed reference.
For the 678 Missouri (Springfield) Journeyman Gas Pipe Fitter exam, the exam format includes:
A major advantage of studying the correct code book is that you can prepare with the same structure the exam uses: terminology, prescriptive requirements, and technical tables. Many questions are answered by locating one controlling sentence, exception, or table note. The quicker you can get to that controlling text, the more comfortable you will feel with pacing.
The Springfield content outline breaks the exam into five major areas (all supported by the 2018 IFGC). The weighting below is a helpful way to plan your study time:
This weighting makes it clear where most of the points live: Appliances, Venting, and Pipe Sizing/Installation represent the majority of the exam. That’s where you should spend most of your practice time, while still keeping your fundamentals strong enough to answer quickly and accurately.
The Springfield 678_MO_S Journeyman Gas Fitter exam is an open book test.
Open book is a real advantage, but only if you can use the IFGC efficiently. With 50 questions in 2 hours, you have enough time to confirm details—but not enough time to search randomly. The goal is to build a repeatable approach so you can locate the right section quickly, confirm the key sentence or table, and move on without getting stuck.
To make the open-book format work in your favor, build these habits during preparation:
When you study with these habits, the IFGC becomes a tool you can use under pressure instead of a book you have to search through.
For Springfield’s ICC Contractor/Trades testing process, the path to testing begins with the local jurisdiction. Candidates must first complete the local application/approval step through the City’s Building Development Services before scheduling an ICC exam. Once you receive approval/notification from the licensing agency, you can register and schedule your exam through Pearson VUE.
After approval, you’ll schedule the exam through the ICC Contractor/Trades program and take the test at an authorized Pearson VUE test center. For electronically delivered exams, results are provided immediately after you complete the examination at the test center.
If you need to retest after an unsuccessful attempt, ICC Contractor/Trades policy requires a waiting period before retaking a failed exam. Use that time strategically by reviewing the content areas where you lost points and focusing on code navigation—especially missed exceptions, overlooked table notes, or misread terminology.
Because Springfield uses specific exam identifiers, make sure you register for the correct Springfield-specific exam: 678_MO_S.
Trade certification for gas fitters in Springfield is handled locally through Building Development Services. The local office is the point of contact for the application/approval step that must be completed prior to scheduling the ICC exam. If your trade pathway requires documentation of experience or work history, gather that information early so approval doesn’t delay your testing timeline.
Because requirements can involve proof of experience, employer verification, and other documentation, it helps to keep your records organized: dates, scope of work, supervision details when applicable, and any forms required by the City.
The IFGC is written to be used as a working document, and the exam expects you to use it that way. The most effective prep approach is not reading cover-to-cover and hoping details stick. Instead, you’ll get better results by studying with a structure that mirrors the exam: learn the “map” of the code, practice locating answers quickly, and train under realistic time conditions.
1) Build a code “map” for the five exam areas
Start by aligning your study routine with the content weighting. Since Appliances, Venting, and Pipe Sizing/Installation represent most of the exam, make them your primary focus. Use Terminology/Fundamentals and Theory/Principles as the base layer you keep sharp so you can answer faster and reserve book lookups for the detail-heavy items.
2) Train a repeatable open-book lookup routine
During practice, treat every question as a process you repeat the same way:
3) Practice with timing that matches exam day
The exam pace works out to a little over two minutes per question. That’s enough time to confirm details if you’re organized, but it can disappear quickly if you search broadly. Use short timed drills in your prep:
4) Turn every missed question into a navigation improvement
When you miss a practice question, don’t just write down the correct answer choice. Write down:
This habit builds confidence quickly because it teaches you how the exam “signals” where the answer lives. Over time, you’ll spend less time searching and more time answering.
1 Exam Prep supports Journeyman Gas Fitter candidates by promoting a practical, organized approach to code-based testing. The goal is to help you study with a structure that matches the exam: build familiarity with the reference, strengthen navigation habits, and improve pacing through practice-driven preparation.
With a code-based, open-book exam, preparation is less about cramming and more about building a reliable routine. 1 Exam Prep supports that routine by emphasizing:
With the correct 2018 IFGC and a focused approach to navigation and timing, you’ll be preparing in a way that supports both exam performance and professional code use.
Yes. The Springfield 678 Missouri (Springfield) Journeyman Gas Pipe Fitter / Journeyman Gas Fitter exam references the 2018 International Fuel Gas Code.
The Springfield 678_MO_S Journeyman Gas Fitter exam is an open book test.
The Springfield 678 exam includes 50 multiple-choice questions.
You have a 2-hour time limit to complete the Springfield 678 Journeyman Gas Fitter exam.
Based on the exam weighting, prioritize Appliances, Venting, and Pipe Sizing and Installation, then reinforce Materials and keep Terminology/Fundamentals and Basic Theory/Principles sharp for faster answers.
For Springfield’s Contractor/Trades testing track, you begin with the local licensing application through Building Development Services. After you receive approval, you can schedule your exam through Pearson VUE.
For electronically delivered exams taken at a test center, results are available immediately after you complete the examination.
ICC Contractor/Trades policy requires a waiting period before retaking a failed exam. Plan to use that time to improve code navigation and focus on the content areas where you missed questions.
This listing is an Exam Book Package that provides the required reference book: the International Fuel Gas Code (IFGC), 2018.