- ROSEN has not published a CS026F pass rate in the sources checked; any specific percentage you see online is unverified.
- The exam is 40 multiple-choice questions in English, delivered through TestReach with remote proctoring.
- Domains 3, 7, 9 and 12 each carry 10%, so together they are 40% of the blueprint.
- Candidates need 18 training hours, 36 mentoring hours and 100 hours of experience or supervised self-learning first.
Why No Official Pass Rate Exists
Search for the CS026F pass rate and you will find confident-sounding numbers on forums and prep sites. Treat them with suspicion. The Certified in In-Line Inspection Data Analysis & Reporting (CS026F) credential is administered by ROSEN (UK) Limited under the Qualification Panel for the Pipeline Industry (QPPI) Certification Board. In the ROSEN certification pages and the Candidate Handbook 2025 editions we reviewed, no cohort pass rate is published. No percentage appears for first-attempt success, retake success or overall success.
That absence is not unusual for niche, professionally gated certifications. The candidate pool is small and specialized, and the certifying body's priority is documenting competency rather than marketing a success statistic. So this article does something different from a typical "pass rate" post: instead of inventing a figure, it walks through the structural evidence that actually determines how hard the exam is to pass, and what that implies for your preparation.
If you want a qualitative read on difficulty rather than a number, our companion piece How Hard Is the CS026F Exam? Complete Difficulty Guide 2026 covers question style and cognitive demands in more depth. For the scoring side, see CS026F Passing Score 2026: Exactly What You Need to Pass.
What the Published Data Does Show
While the pass rate is absent, the program publishes plenty of hard facts. These are the data points you can rely on, as of the sources checked on October 5, 2026:
| Data Point | What ROSEN Publishes |
|---|---|
| Issuer | ROSEN (UK) Limited, under the QPPI Certification Board |
| Level | Foundation-level individual competency in ILI data analysis and reporting |
| Question count | 40 multiple-choice questions |
| Language | English |
| Delivery | TestReach, remote proctored |
| Application fee | $150 USD |
| Examination fee | $350 USD |
| Retake fee | $250 USD |
| Certification validity | Five years |
| Recertification | $350 USD; 10 credits annually, 50 over the cycle |
Notice what is missing: a published cut score is not part of the facts we can cite here either. Rather than guess, plan to aim well above any plausible threshold by mastering the weighted blueprint. Our passing score guide tracks what is and is not confirmed on that front.
Format Facts That Shape Your Odds
Forty Questions Leaves Little Room to Hide
With only 40 multiple-choice questions spread across 12 domains, there is minimal statistical cushion. A candidate who is weak in two or three topics cannot rely on volume to average out the damage. Domains weighted at 7.5% correspond to roughly three questions each, while the 10% domains correspond to roughly four, though the handbook gives weights, not a guaranteed question-by-question distribution. Treat those counts as an approximation.
Remote Proctoring Adds Procedural Risk
The exam is delivered through TestReach with identity and environment checks, webcam and audio monitoring, and screen oversight. The general rules prohibit reference materials, writing materials and calculators unless the applicable examination instructions expressly authorize them. Practically, that means:
- You cannot sketch an anomaly interaction diagram on scratch paper unless the instructions for your sitting allow it.
- You cannot use a calculator for failure pressure reasoning unless it is expressly authorized.
- Your room, desk and webcam setup must pass environment checks before you ever see question one.
Because of this, conceptual fluency matters more than computational stamina. Read your exam instructions carefully before test day, and treat early-login instructions, training hours, mentoring hours and the exam timer as separate quantities: none converts into another.
Reading the Blueprint as Pass-Rate Evidence
The exam topics are reproduced from section 5.6, page 14, of the Pipeline Integrity Engineer Certification - Candidate Handbook 2025. Weights total 100%, and four topics are jointly largest at 10% each. Here is the full blueprint:
| # | Domain | Weight |
|---|---|---|
| 1 | Pipe materials and pipeline components | 7.5% |
| 2 | Pipeline anomaly categories (geometrical, volumetric, planar) | 7.5% |
| 3 | ILI technologies, NDE theory and performance specification | 10% |
| 4 | Pipeline tracking and assessment of AGM marker | 7.5% |
| 5 | Correlation of ILI runs by girth weld list comparison | 7.5% |
| 6 | Correlation of inspection pipe tally to pipeline data | 7.5% |
| 7 | Assessment of ILI data quantity and quality | 10% |
| 8 | Interpretation and classification of anomalies and components | 7.5% |
| 9 | Sizing of anomaly dimensions | 10% |
| 10 | Anomaly interaction rules and failure pressure assessment | 7.5% |
| 11 | Compilation of standard ILI reports | 7.5% |
| 12 | Cataloging field verification results and comparison to ILI | 10% |
Why does this matter for pass odds? Because the blueprint is deliberately end-to-end. It follows the real workflow of an ILI data analyst: understand the pipe and anomalies, understand the tool, track and align runs, judge data quality, classify and size features, assess interaction and failure pressure, report, then close the loop with field verification. A candidate who has only worked one slice of that chain, such as reporting, is exposed everywhere else. For a domain-by-domain walkthrough, see CS026F Exam Domains 2026: Complete Guide to All 12 Content Areas.
The 40% Cluster: Domains 3, 7, 9 and 12
These four topics are jointly largest at 10% each, so they are the highest-leverage preparation targets.
- Domain 3: know how each ILI technology works at the NDE-principle level and what its performance specification promises, not just tool names.
- Domain 7: be able to judge data loss and signal strength, and decide whether a run's quality supports the conclusions drawn from it.
- Domain 9: practice reasoning about depth, length and width sizing and what influences sizing confidence.
- Domain 12: understand how field verification results are cataloged and compared back to ILI calls.
The Alignment Block That Trips Up Specialists
Domains 4, 5 and 6 (AGM marker tracking, girth weld list comparison, and pipe tally correlation) are only 7.5% each, but they form a conceptual block worth 22.5% combined. Analysts who have only consumed finished vendor reports often underestimate how much the exam expects them to understand about how odometer distance, reference markers, weld lists and tallies are reconciled. If your daily work never touches alignment, give this block extra attention.
The Eligibility Filter Behind the Candidate Pool
One reason a raw pass percentage would be hard to interpret is that candidates are pre-screened. Foundation-level prerequisites include 18 training hours, 36 mentoring hours, and 100 hours of relevant experience or supervised self-learning, with supporting evidence. There is also an academic/professional pathway requiring an accepted degree or professional engineering qualification, with four years of relevant engineering experience able to substitute for the degree pathway.
ROSEN training is not mandatory when acceptable equivalent preparation is documented. That flexibility widens who can apply, but the documentation burden means most candidates arrive having already invested serious effort. The practical consequence: you are being measured against a prepared field, not a casual crowd, so "average" preparation is not a safe plan. Full eligibility detail lives in CS026F Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Do not mix up your hour counts. The 18 training hours, 36 mentoring hours and 100 hours of experience or supervised self-learning are application prerequisites. They are separate from the exam timer and from any early-login window, and none of them can be swapped for another.
What a Miss Costs You
Even without a published pass rate, the downside of a failed attempt is concrete. The first attempt costs $150 USD (application) plus $350 USD (examination), for $500 USD total, excluding any training and mentoring spend. A retake costs $250 USD. That makes a one-miss path $750 USD in program fees alone, before counting the opportunity cost of rescheduling and re-preparing.
| Scenario | Program Fees (USD) |
|---|---|
| Pass on first attempt | $500 |
| Pass on second attempt | $750 |
| Recertification after five years | $350 |
The retake discount softens the blow, but it does not change the lesson: the cheapest exam is the one you pass first. Our CS026F Certification Cost 2026: Complete Pricing Breakdown shows how these fees fit with training and mentoring expenses.
A Domain-Weighted Readiness Plan
Because the data supports no pass-rate shortcut, the best use of your time is allocating study hours in proportion to blueprint weight and personal weakness. This is the only generic-method section in this article, and it is tied directly to the CS026F domains.
Foundations and Anomaly Vocabulary
- Domain 1: steel grades, design parameters, weld types
- Domain 2: geometrical, volumetric and planar anomaly categories
Technology and Data Quality
- Domain 3: NDE principles behind each ILI technology and its performance specification
- Domain 7: data loss and signal strength assessment
Alignment Block
- Domain 4: AGM marker tracking
- Domains 5 and 6: girth weld list comparison and pipe tally correlation
Classification, Sizing and Integrity
- Domain 8: dirt, debris, objects and noise versus real features
- Domains 9 and 10: sizing, interaction rules and failure pressure standards
Reporting, Verification and Mock Review
- Domain 11: standard reports with statistical charts and tables
- Domain 12: field verification cataloging and comparison to ILI results
- Timed practice sets across all 12 domains
The sequencing is intentional: data quality (Domain 7) comes before classification and sizing because you cannot interpret a feature you cannot trust. Field verification (Domain 12) comes last because it asks you to judge how well everything upstream held up. For a complete preparation framework, use the CS026F Study Guide 2026: How to Pass on Your First Attempt, and keep the CS026F Cheat Sheet 2026: One-Page Review of Must-Know Facts handy for final review. When you are ready to test yourself under realistic conditions, run timed sets on the CS026F practice test platform.
Who Values This Credential
The certification is issued through ROSEN's competency assessment and certification program, with the QPPI Certification Board providing the qualification framework for the pipeline industry. The people who benefit most are those whose daily work depends on interpreting inspection data: ILI data analysts, integrity engineers who consume vendor reports, and technical staff at pipeline operators and inspection service providers who need documented, individual competency.
Because the certification is individual rather than company-wide, it travels with you across employers, and it lasts five years. Renewal requires 10 qualifying credits annually and 50 over the five-year cycle, documented against the handbook's activity-credit rules. These are credits, not a blanket requirement for 50 CEUs. To weigh the career side, read Is the CS026F Certification Worth It? Complete ROI Analysis 2026 and CS026F Salary Guide 2026: Complete Earnings Analysis.
If you are still orienting yourself, the basics are covered in What Is CS026F Certification? and CS026F Training. For the job-market view, see CS026F Jobs.
Frequently Asked Questions
ROSEN has not published a pass rate in the sources we checked, including the Candidate Handbook 2025 editions and the ROSEN certification page. Any specific percentage you see elsewhere is unverified, and may come from a different credential that shares the same acronym.
The assessment contains 40 multiple-choice questions in English, delivered through TestReach with remote proctoring, including identity and environment checks and webcam, audio and screen monitoring.
Domains 3 (ILI technologies and NDE theory), 7 (data quantity and quality), 9 (anomaly sizing) and 12 (field verification comparison) are each 10%, making them jointly the largest topics. All other domains are 7.5%, so no area can be safely ignored on a 40-question exam.
The first attempt totals $500 USD ($150 application plus $350 examination), excluding training and mentoring. A retake is $250 USD, so passing on a second attempt brings program fees to $750 USD.
The general rules prohibit reference materials, writing materials and calculators unless the applicable examination instructions expressly authorize them. Check your specific exam instructions before test day rather than assuming anything is allowed.
Without an official pass rate, your best indicator of readiness is performance on realistic, domain-balanced practice under timed, proctor-style conditions. Build your plan around the weighted blueprint, close your alignment and data-quality gaps first, and use the CS026F practice exams to confirm you are consistently strong across all twelve domains before you pay for an attempt.