- What "CWS" Means Here
- Who a CWS Actually Is on the Shop Floor
- Who Awards the Credential and How It Works
- The Two-Part Exam Format
- What the Exam Covers: 11 Objectives
- Eligibility and Documentation
- Fees at a Glance
- Staying Certified: Renewals and Ninth-Year Recertification
- Who Hires a CWS
- A Domain-Weighted Preparation Order
- Frequently Asked Questions
- CWS here means Certified Welding Supervisor, a credential awarded by the American Welding Society (AWS).
- The exam has two parts, both open-book, computer-based, and delivered at Prometric test centers.
- Each part allows 2 hours and requires at least 70% to pass.
- Productivity and Performance is the largest published objective at 30% of the exam.
What "CWS" Means Here
The letters CWS get used for several unrelated credentials. In this article, and across this site, CWS means Certified Welding Supervisor, a professional certification from the American Welding Society. It is a credential about supervising welding work: reading the job, controlling the process, keeping people safe, and making sure the weldments meet the code or specification they were built to.
If you have landed here from a search for a different "CWS," the rest of this article will not apply to you. If you want the shorter definitional pages on this site, see What Does CWS Stand For? and CWS Meaning. This article goes deeper into what the certification involves in practice.
Who a CWS Actually Is on the Shop Floor
A Certified Welding Supervisor is the person responsible for the quality, safety, and productivity of welding operations. That role looks different depending on the employer, but the responsibilities cluster around a few themes:
- Interpreting drawings and specifications so welders know exactly what is required, including weld symbols, joint details, and the standards the work must meet.
- Directing welders with clear welding instructions, from procedure selection to sequencing and workmanship expectations.
- Controlling production through the practical systems that keep welding work on schedule and on budget.
- Protecting people by enforcing safety requirements in an environment with heat, fumes, electricity, and compressed gases.
- Documenting the work through reports and records that prove what was done and by whom.
Who Awards the Credential and How It Works
The credential is administered by the American Welding Society. The certification requirements are formalized in AWS QC13, Specification for the Certification of Welding Supervisors, and the qualification framework appears in AWS B5.9, Specification for the Qualification of Welding Supervisors. The current exam logistics are laid out in AWS's Examination User Guide for the CWS exam.
Certification requires passing two examinations, called Part A and Part B, and meeting the experience and education requirements. Once certified, you keep the credential by documenting continued activity as a welding supervisor, with a ninth-year recertification step that requires either passing both exam parts again or earning professional development hours. We cover the mechanics in the maintenance section below.
The Two-Part Exam Format
The CWS exam is delivered in two parts, and you need to pass both. The format details are consistent across both parts:
| Feature | Part A | Part B |
|---|---|---|
| Title | Fundamentals of Welding Supervision | Welding Practices & Economics |
| Delivery | Computer-based at Prometric | Computer-based at Prometric |
| Open book | Yes | Yes |
| Question type | Four-option multiple choice | Four-option multiple choice |
| Exam time | 2 hours | 2 hours |
| Scheduled seat time | 2.5 hours | 2.5 hours |
| Passing requirement | At least 70% | At least 70% |
| Number of questions | 150 | See note below |
Total examination time across the two parts is 4 hours. For the exact scoring rules, see CWS Passing Score 2026.
What "Open Book" Really Means
Open book does not mean unlimited. The rules on references are specific:
- Printed references must be original and either permanently bound or securely fastened through all pages. Loose sheets are prohibited.
- Approved calculators include four-function, construction, and nonprogrammable scientific models.
- Digital references are supplied at the test center, with the exception of the AWS Welding Handbook series.
One more wrinkle: the examination guide lists ANSI Z49.1:2005 as a reference, while the AWS program webpage lists ANSI Z49.1:2012. Confirm the approved edition when you schedule, rather than assuming either one. Safety is a 10% objective, so you do not want to walk in prepared on the wrong edition.
Open-book exams reward organization more than memorization. Knowing exactly where something lives in your references is a skill you have to practice. For a sense of how this plays out, read How Hard Is the CWS Exam?
What the Exam Covers: 11 Objectives
The exam is built around 11 formal examination objectives, each with an approximate weight. These come from the current Examination User Guide and are corroborated by AWS QC13 clause 6.2. Domains 1 through 10 correspond to Part A; Domain 11 corresponds to Part B. The weights are approximate percentages that total 100%, and they should not be treated as precise question counts.
| Domain | Weight |
|---|---|
| 1. Knowledge of Welding Supervision | 5% |
| 2. Understanding of Drawings and Specifications | 10% |
| 3. Knowledge of Base Material and Welding Materials | 5% |
| 4. Familiarity with Welding, Brazing, Cutting, Equipment, Theory and Application | 5% |
| 5. Knowledge of Safety Requirements | 10% |
| 6. Welding Instructions | 10% |
| 7. Knowledge of Welding Practices and Production Controls | 10% |
| 8. Welding Inspection | 5% |
| 9. Work Reports and Records | 5% |
| 10. Understanding the General Applications of Welding Standards | 5% |
| 11. Productivity and Performance | 30% |
One note on sources: AWS B5.9:2006 Annex A groups the supervisor's tasks differently. We follow the current examination guide and QC13 certification table here, because those are what the exam is built from. For a domain-by-domain breakdown, see CWS Exam Domains 2026: Complete Guide to All 11 Content Areas.
Productivity and Performance Dominates
Domain 11: Productivity and Performance (30%)
This is the largest published category and the heart of Part B, Welding Practices & Economics. It is where the exam shifts from "do you know the technical material" to "can you run a welding operation efficiently and profitably."
- Expect the economics side of welding to matter: cost, efficiency, and the decisions that affect both.
- Practice calculation-style questions with the calculator types the exam permits.
- Learn where your references cover these topics so you can find answers quickly during an open-book session.
The Core Technical Block
Drawings, Safety, Instructions, and Production Controls (10% each)
Four objectives carry 10% apiece, and together they represent the day-to-day competence of a supervisor.
- Understanding of Drawings and Specifications: reading what the design requires and what the specification demands of the weldment.
- Knowledge of Safety Requirements: the hazards of welding and the rules that control them, which ties directly to the ANSI Z49.1 edition question above.
- Welding Instructions: translating requirements into direction welders can follow.
- Knowledge of Welding Practices and Production Controls: the practical controls that keep production consistent.
The Smaller Objectives Still Count
The remaining six objectives are each 5%: Welding Supervision, Base Material and Welding Materials, Welding/Brazing/Cutting Equipment and Theory, Welding Inspection, Work Reports and Records, and General Applications of Welding Standards. Do not skip them. On a pass-fail exam where you need 70% on each part, a weak area can cost you points you cannot afford to lose, and several of these topics (materials, equipment, standards) support your ability to answer the larger objectives correctly.
Eligibility and Documentation
You cannot simply book the exam; you have to qualify first. The baseline requirements are:
- A high-school diploma or approved equivalent.
- Three years of qualifying practical welding experience involving weldments fabricated to codes, specifications, or other standards.
- Three years of documented relevant teaching may substitute for one year of the practical experience.
- Two years of welding-supervision experience is preferred, but it is not listed as a hard requirement.
- Formal preparation training is optional.
The current examination guide also requests visual-acuity documentation, so build that into your application timeline. For the complete walkthrough, see CWS Requirements 2026: Eligibility, Prerequisites & How to Qualify, and for scheduling logistics, CWS Exam Dates 2026.
Fees at a Glance
The 2026 fee structure distinguishes between AWS members and nonmembers. The initial examination fee includes Prometric seat fees.
| Fee Item | Member | Nonmember |
|---|---|---|
| Initial examination (both parts) | $665 | $756 |
| Retest, one part | $445 | $445 |
| Retest, both parts | $650 | $650 |
| Renewal (years 3 and 6) | $425 | $516 |
| Ninth-year recertification by PDHs | $455 | $546 |
| Ninth-year recertification by examination | $615 | $706 |
The nonmember initial price includes one year of AWS Individual Membership, which narrows the practical gap between the two prices. Retesting costs are the same for members and nonmembers. For the full picture, including what to budget for references, see CWS Certification Cost 2026.
Staying Certified: Renewals and Ninth-Year Recertification
Passing the exam is not the end of the process. Certification is valid for three years, and maintaining it depends on documented continued activity as a welding supervisor.
- Years 3 and 6: Renew by documenting continued welding-supervisor activity.
- Year 9: Recertify by documenting continued activity and either passing both exam parts again or earning 80 PDHs over nine years, with at least 20 of those in the final three years.
This structure means the credential reflects ongoing practice, not just a one-time test result. It also means employers can reasonably treat a current CWS as evidence of continuing involvement in supervision rather than a lapsed qualification.
Who Hires a CWS
The credential is relevant wherever welding work is fabricated to a code or specification and someone has to answer for the result. That includes fabrication shops, manufacturing plants, construction and structural work, pressure-equipment and piping fabrication, and organizations that maintain or repair welded assets. The common thread is not a single industry but the presence of controlled welding work that needs a qualified person directing it.
Titles vary: welding supervisor, welding foreman, fabrication supervisor, production supervisor, or welding manager can all involve CWS-relevant responsibilities. Because the exam itself heavily weights productivity and economics, the credential tends to signal readiness for roles with accountability for output and cost, not just technical welding skill. For a closer look at the job market, visit CWS Jobs; for earnings context, see CWS Salary Guide 2026 and Is the CWS Certification Worth It?
A Domain-Weighted Preparation Order
You do not need a generic study system for this exam; you need to sequence your effort by weight and by how the content builds. Here is one way to order your preparation, assuming you already meet the eligibility requirements:
Tools and Reference Setup
- Assemble your permitted references and bind or fasten them as required.
- Confirm the approved ANSI Z49.1 edition before you tab anything.
- Skim all 11 objectives so you know what you will be tested on.
Drawings, Instructions, and Standards
- Work Domain 2 (Drawings and Specifications) and Domain 6 (Welding Instructions) together, since they feed each other.
- Add Domain 10 (General Applications of Welding Standards) to learn where standards fit.
Safety, Materials, and Equipment
- Cover Domain 5 (Safety Requirements) thoroughly at 10% of the exam.
- Review Domains 3 and 4 for base materials, welding materials, and process and equipment theory.
Production, Records, and Productivity
- Spend the most time on Domain 11 (30%), including calculation practice with your approved calculator.
- Pair it with Domain 7 (Practices and Production Controls) and Domain 9 (Reports and Records).
- Take timed practice sets and note which tabbed references you reach for.
Adjust the pacing to your own experience. A working supervisor may need less time on production controls and more on standards and calculations; a strong welder newer to supervision may need the opposite. When you are ready to test yourself, work through questions on the CWS practice test site, and use the CWS Study Guide 2026 and CWS Cheat Sheet 2026 to reinforce weak spots. If you are weighing formal courses, see CWS Training.
Key Takeaway
Give Productivity and Performance the biggest share of your time, but do not neglect the 10% objectives. Because Part A and Part B each need at least 70%, balanced readiness across all 11 objectives is safer than excelling in a few.
Frequently Asked Questions
In this context, CWS stands for Certified Welding Supervisor, a professional credential awarded by the American Welding Society. It certifies that a person has met experience requirements and passed the examinations covering welding supervision.
Two. Part A is Fundamentals of Welding Supervision and Part B is Welding Practices & Economics. Both are computer-based, open-book, four-option multiple-choice exams at Prometric, each allowing 2 hours and requiring at least 70%.
Yes, but with rules. Printed references must be original and permanently bound or securely fastened through all pages, with loose sheets prohibited. Digital references are provided except for the AWS Welding Handbook series, and only approved calculator types are allowed.
A high-school diploma or approved equivalent and three years of qualifying practical welding experience on weldments fabricated to codes or standards. Three years of documented relevant teaching can substitute for one year. Two years of supervision experience is preferred. See CWS Requirements 2026 for details.
Three years. You renew at years 3 and 6 by documenting continued welding-supervisor activity, then recertify at year 9 by documenting activity and either passing both exam parts or earning 80 PDHs over nine years, with at least 20 in the final three years.
If you are deciding whether the CWS fits your career path, start with the eligibility rules, then compare the effort against the benefits in our CWS certification overview, and build confidence with timed questions on the main practice test site.