HAZOP Practice Test

The HAZOP Practice Test is a free intermediate-level, 20-minute skill test from Science of Apps. It tests HAZOP study skills for process safety — HAZOP concepts and guide words, study preparation and the team, running sessions and recording, and risk ranking, safeguards and follow-up — written to IEC 61882:2016, CCPS Guidelines for Hazard Evaluation Procedures, CCPS Layer of Protection Analysis and OSHA 29 CFR 1910.119 for 2026. Score 70% or more on its 20 questions to earn a verifiable HAZOP Readiness certificate (SOA-H6). Every question is based on published standards and research — including IEC 61882:2016 Hazard and operability studies (HAZOP studies) – Application guide (IEC), Guidelines for Hazard Evaluation Procedures (3rd edition) (Center for Chemical Process Safety (AIChE)), 29 CFR 1910.119 Process safety management of highly hazardous chemicals (US Occupational Safety and Health Administration (eCFR)) — and each answer is explained with its source.

Yes. Science of Apps has a free HAZOP Practice Test built on the current exam outline for 2026 and 2027. It covers concepts and guide words, preparation and the team, running sessions and recording and risk ranking, safeguards and follow-up, scores you instantly and issues a verifiable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a HAZOP Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: IEC 61882:2016 Hazard and operability studies (HAZOP studies) – Application guide (IEC); Guidelines for Hazard Evaluation Procedures (3rd edition) (Center for Chemical Process Safety (AIChE)); 29 CFR 1910.119 Process safety management of highly hazardous chemicals (US Occupational Safety and Health Administration (eCFR)); Layer of Protection Analysis: Simplified Process Risk Assessment (Center for Chemical Process Safety (AIChE)); IEC 61511 Functional safety: safety instrumented systems for the process industry sector (IEC). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Concepts and Guide Words (Design intent, Deviations and Guide words); Preparation and the Team (Scope, Nodes and Roles); Running Sessions and Recording (Causes, Consequences and Safeguards); Risk Ranking, Safeguards and Follow-up (Risk matrix, LOPA and Actions). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

HAZOP facilitator or chair, Process safety engineer, Process or chemical engineer, Operations or maintenance representative and HAZOP scribe or technical secretary. It suits anyone who wants a quick, verifiable way to show HAZOP knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

A hazard and operability (HAZOP) study is a structured team review of a design or process. The team applies guide words such as No, More and Less to process parameters for each part of the system to find deviations from design intent, their causes and consequences, existing safeguards and recommended actions.

IEC 61882:2016 is the international application guide for HAZOP studies. Process industries also follow CCPS guidelines, and US facilities covered by OSHA's Process Safety Management rule must revalidate process hazard analyses such as HAZOPs at least every five years.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.