- What the Eleven REI Domains Actually Are
- Foundation Domains: Equipment, Role and Program (Domains 1-3)
- Standards and Inspection Levels (Domains 4-5)
- Procedures and Judgment (Domains 6-7)
- Documentation and Component Inspection (Domains 8-9)
- Testing Domains: Crack Detection and Load Tests (Domains 10-11)
- Sequencing Your Prep Around the Domains
- Certification Mechanics That Frame the Exam
- Frequently Asked Questions
- The Rigging Equipment Inspector (REI) curriculum from Crane Institute of America lists eleven unweighted topic headings, not a weighted blueprint.
- Covered equipment includes wire rope, slings, rigging hardware, come-alongs, lifting beams and chain hoists.
- Candidates need two years of rigging experience, or can pursue trainee certification without it.
- The issuer's current policy gives a refreshed card valid for three years after successful recertification.
What the Eleven REI Domains Actually Are
Rigging Equipment Inspector (REI) is a certification offered through Crane Institute of America (CIA). Its published curriculum lists eleven topic headings. This guide walks through each one and explains what an inspector should be able to do with that material on the job and on the written examination.
First, an important framing point. The eleven headings come from the issuer's current, undated Rigging Equipment Inspector page. They are the required preparation curriculum for this certification. They are not a separately published exam blueprint, and the issuer does not publish percentage weights for any of them. Nobody can honestly tell you which domain is "worth the most" questions, so any guide that assigns percentages to these headings is inventing numbers. Treat all eleven as fair game and prepare proportionally to your own weak spots.
The page names the equipment categories directly: wire rope, slings, rigging hardware, come-alongs, lifting beams and chain hoists. Course resources include a Rigging Handbook, an REI Workbook, inspection checklists and cards, and capacity information. Keep that equipment list in mind as you read the domains, because nearly every heading eventually resolves into a question about one of those items.
For background on the credential itself before diving into the domains, see What Is REI Certification? and the broader REI Certification overview.
Foundation Domains: Equipment, Role and Program (Domains 1-3)
The first three headings establish vocabulary, responsibility and structure. They read as "soft" compared with the technical domains, but they set up how everything else is framed.
Domain 1: Types of rigging equipment, components & terminology
This is the vocabulary layer. Before you can judge whether a sling or hook is fit for service, you must name its parts correctly and know which equipment category it belongs to.
- Component names across wire rope, slings, rigging hardware, come-alongs, lifting beams and chain hoists
- Terminology that appears on inspection checklists and cards, so your reports use standard language
- How different equipment types relate to one another within a rigging assembly
Domain 2: Inspector's role in reducing accidents & liability exposure
This domain covers why inspection exists. The inspector is a safeguard between a piece of equipment and a lift, and the heading explicitly ties that role to liability exposure for the employer and for the inspector personally.
- How timely removal of unfit equipment prevents accidents
- Why documented, consistent inspection reduces exposure when something goes wrong
- The boundaries of the inspector's responsibility
Domain 3: Setting up a rigging equipment inspection program
Inspection is more than looking at gear. A program defines what gets inspected, how often, by whom and how results are recorded.
- Elements of a workable program, including identification and tracking of equipment
- Assigning responsibility and defining inspector qualification
- Connecting the program to the three levels of inspection covered in Domain 5
Expect Domains 1-3 to reward careful reading of the Rigging Handbook rather than memorization of numbers. If you are earlier in your decision process, What Is REI? and What Does REI Stand For? clarify the credential, and REI Requirements covers eligibility.
Standards and Inspection Levels (Domains 4-5)
Domain 4: OSHA & ASME rigging equipment inspection requirements
The heading names OSHA and ASME as the regulatory and consensus-standard anchors for inspection. The inspector must know what these sources require and be able to apply them to specific gear.
- What regulations and standards require for inspection frequency, documentation and removal criteria
- How to read a standard requirement and map it to a real sling, hook or hoist in front of you
- The difference between a legal minimum and the stricter criteria an employer may adopt
Domain 5: The three levels of inspection
The curriculum organizes inspection into three levels. Your job is to understand what distinguishes them: who performs each, when it happens, and how detailed it must be.
- How the levels differ in frequency and depth
- Which level applies when equipment is first put into service versus routinely used
- How records differ across the levels
Domains 4 and 5 work together. The standards tell you what must be inspected; the level structure tells you how deeply and how often. If you want a view of how hard the written test feels across these domains, How Hard Is the REI Exam? is a useful companion.
Procedures and Judgment (Domains 6-7)
Domain 6: Rigging equipment inspection procedures and techniques
This is the hands-on method domain. It covers the practical sequence for examining gear: what to look at, in what order, with what tools and what you are looking for.
- Systematic inspection technique so nothing is skipped
- Measurement and observation practices appropriate to each equipment type
- How technique adapts between flexible items (wire rope, slings) and rigid items (hardware, lifting beams)
Domain 7: Recognizing and understanding the differences between deficiencies & safety hazards
This is the judgment domain, and it is the one most likely to separate prepared candidates from memorizers. Not every flaw has the same consequence, and the curriculum explicitly asks you to distinguish a deficiency from a safety hazard.
- What makes a finding a deficiency versus a hazard that demands immediate removal from service
- How severity shapes your disposition decision and your report
- Why consistent classification protects both workers and the inspector
Key Takeaway
Practice classifying findings, not just spotting them. A candidate who can describe a flaw but cannot decide whether the item stays in service has only learned half of Domain 7.
Documentation and Component Inspection (Domains 8-9)
Domain 8: Correct way to write inspection reports to provide the proper documentation
A finding that is not documented properly may as well not have happened. This domain addresses how to record inspections so the documentation holds up.
- What a complete inspection record should capture
- Clear, specific language that another person could act on without re-inspecting
- How reports support the inspection program (Domain 3) and your liability position (Domain 2)
Domain 9: Inspecting structural components, sheaves, blocks, hooks, mechanisms, wire rope, load indicating devices, etc.
Domain 9 is the broadest technical heading, listing a wide range of components. It is where wire rope and hardware knowledge gets applied to specific inspection points.
- Structural components and the signs of distress that matter on each
- Sheaves and blocks, including wear and alignment concerns
- Hooks, mechanisms and load indicating devices, and what their condition tells you
- Wire rope condition assessment as part of the broader assembly
Because Domain 9 ends with "etc.," it signals that the list is illustrative rather than exhaustive. Study the full component coverage in your Rigging Handbook and workbook rather than treating the named items as the whole scope. Practice reports and inspection scenarios are available through the REI practice test site.
Testing Domains: Crack Detection and Load Tests (Domains 10-11)
Domain 10: When to perform a non-destructive crack detection test
The heading is framed around when, not how. The key skill is recognizing the circumstances that call for non-destructive crack detection rather than relying on visual inspection alone.
- Conditions and findings that trigger the need for a crack detection test
- Why visual inspection has limits for certain components
- Who decides, and how that decision is documented
Domain 11: Performing load tests on rigging equipment, i.e. come-alongs, chain hoists, etc.
The final heading covers load testing of equipment such as come-alongs and chain hoists. It connects capacity information, test procedure and the decision to return an item to service.
- When a load test is required or appropriate
- How capacity information from your course resources informs the test
- Safe conduct of the test and the documentation that follows
Sequencing Your Prep Around the Domains
Rather than a generic schedule, order your study by dependency. Vocabulary and standards come first because later domains lean on them. Judgment and documentation come next, and testing domains come last because they assume you can already inspect and classify.
Vocabulary and role (Domains 1-3)
- Learn component names for each of the six named equipment categories
- Outline what a basic inspection program contains
Standards and levels (Domains 4-5)
- Study the OSHA and ASME material supplied in your course
- Make a one-page comparison of the three inspection levels
Technique and judgment (Domains 6-7)
- Practice classifying sample findings as deficiencies or hazards
- Rehearse a repeatable inspection sequence
Reports and components (Domains 8-9)
- Write sample inspection reports from scenarios
- Review wire rope, sheave, block, hook and load indicating device criteria
Testing and review (Domains 10-11)
- Define triggers for crack detection and load testing
- Take mixed practice questions across all eleven headings
For a fuller plan, see the REI Study Guide, and keep the REI Cheat Sheet handy for last-minute review.
Certification Mechanics That Frame the Exam
The domains make more sense when you know the structure around them. The table below summarizes what is publicly verified, and flags what is not.
| Item | What is verified |
|---|---|
| Issuer | Crane Institute of America (CIA); not Crane Institute Certification (CIC), NCCCO or other bodies |
| Prerequisites | Complete CIA training, physical ability to inspect rigging equipment, at least two years working with rigging equipment, and pass the written exam |
| Trainee option | Trainee certification is available without the required experience |
| Exam length, question count, passing score | Not publicly verified |
| Recertification | Refreshed card valid three years after a successful online exercise or instructor-led recertification |
| Online renewal | Uses myTestcom.net |
Cost context
No standalone initial exam fee is publicly verified. Course advertisements indexed from the issuer show package prices that differ by format, including USD 1,295 for a four-night offering and USD 895 for certain three-day offerings. These are course prices, not an exam tariff. General recertification policy lists USD 495, though the instructor-led page says pricing varies by discipline. For the full breakdown, read REI Certification Cost.
Renewal conflict worth knowing
The issuer's current policy points to a three-year card after recertification, while O*NET's entry for the credential describes renewal every five years. When the two disagree, rely on the issuer's current policy for your own renewal planning and confirm directly with Crane Institute.
Other practical questions are covered in REI Passing Score, REI Pass Rate and REI Exam Dates. If you are weighing the investment, see Is the REI Certification Worth It? and the REI Salary Guide, and explore hiring context at REI Jobs.
Key Takeaway
Because no weights are published, balance your effort across all eleven headings. Spend extra time on Domains 7 and 9, where judgment and component detail concentrate, and test yourself with realistic scenarios at the main practice test.
Frequently Asked Questions
No weights are published. The eleven headings come from the issuer's curriculum page and are unweighted, so there is no verified highest-weighted domain. Prepare for all of them.
Not exactly. The eleven headings are the issuer's required preparation curriculum for the Rigging Equipment Inspector certification, not a separately published exam blueprint or proof of exhaustive exam coverage.
The issuer page explicitly includes wire rope, slings, rigging hardware, come-alongs, lifting beams and chain hoists. Domain 9 also names sheaves, blocks, hooks, mechanisms and load indicating devices.
Candidates complete Crane Institute's training, have the physical ability to inspect rigging equipment, have at least two years working with rigging equipment and pass the written exam. Trainee certification is available without the experience requirement.
The issuer's current policy provides a refreshed card valid for three years after a successful online exercise or instructor-led recertification. The initial certificate's term is not separately specified on the current course page.