Updated 2 Nov 2026
A scaffolder erects and dismantles under supervision. A scaffold supervisor directs erection. An inspector, called the competent person in OSHA and Gulf procedures, inspects before use and at set intervals. An engineer or qualified person designs complex scaffolds. The titles differ by regime, so check which one your client's procedure names.
Who does what
| Role | What the documents describe | Evidence of competence |
|---|---|---|
| Scaffolder | Erects, alters and dismantles; erection is supervised by a competent supervisor (OSHJ-CoP-23) | Training and experience records; card schemes vary by country |
| Scaffold supervisor / erection supervisor | A named role in the EXPRO procedure (section 5.3) and in OSHJ-CoP-23 | Appointment letter plus training and experience |
| Inspector / competent person | Inspects before the shift and at intervals not exceeding 7 days; OSHA and the Gulf procedures call this the competent person (EXPRO section 5.4) | In the UK, CISRS Inspection card, or Scaffolder/Advanced card with Inspection Endorsement, for the one-day system scaffold inspection course |
| Qualified person / scaffold engineer | Designs complex scaffolds; OSHJ-CoP-23 requires a qualified scaffold engineer above 10 m | Degree or professional standing; one US explainer states a registered professional engineer designs scaffolds above 125 ft: verify against 29 CFR 1926.451 |
The OSHA competent person versus a Gulf inspector
A US explainer (NIST Global, May 2026) describes the OSHA competent person as someone who spots hazards, can stop work, inspects before shifts and supervises erection and alteration, while the qualified person solves technical problems and designs complex scaffolds. The same article is inconsistent about qualifications for the qualified person, so check 29 CFR 1926.450 and 1926.451 directly. OSHJ-CoP-23 defines competence as adequate training, knowledge, experience and skills, scaled to the complexity of the task. In practice a Gulf site expects one person to hold both the inspection authority and the paperwork: the name on the tag must match an appointment.
What an employer actually checks
- A current appointment: who may sign tags on this site.
- Training evidence matched to the scaffold types in the contract (tube and fitting, system, hanging).
- A verifiable certificate or card. AL-YASSIN certificates can be checked online on /verify/; they confirm technical knowledge only and are not Saudi Aramco cards or authorisation.
- A short practical walk: the candidate inspects a scaffold and names the defects.
Country-by-country requirements for Kuwait, Bahrain and other states: confirm with your client or the site HSE team.
Common mistakes on site
- Using one title for all four roles so nobody knows who may sign a tag.
- Promoting the best scaffolder to inspector without inspection training.
- Treating the engineer's design as the inspection: design and inspection are separate steps.
- Letting a certificate from an online practice exam stand in for a site authorisation.
Practise and verify
The free Scaffold Inspector practice exam on /exams/aramco-scaffold-inspector/ has 50 questions in 50 minutes; a pass at 85% gives a certificate anyone can verify online. The interview questions on /interview-questions/scaffold-inspector/ cover the same ground. These are practice only, not a Saudi Aramco test.
Questions
Is a competent person the same as a scaffold inspector?
In OSHA and the Gulf procedures we read, the competent person is the role that carries out the inspections. Titles differ by site, so match the name to the client's procedure.
Does an inspector need an engineering degree?
The documents we read do not require one for inspection. Design of complex scaffolds needs a qualified scaffold engineer.
What card does a scaffold inspector hold in the UK?
A CISRS Inspection card, or a Scaffolder or Advanced card with an Inspection Endorsement, is the entry for the one-day system scaffold inspection course.
What do Gulf employers require?
They set their own lists by country and client: confirm with your client or the site HSE team.
- EXPRO (Authority for Efficiency of Spending and Government Projects), Scaffold Control Procedure EPM-KSS-PR-000033-AR, Rev 000, 2021 (read 2026-11-02; Arabic PDF, extraction partly garbled: verify against the original)
- Sharjah Prevention and Safety Authority, OSHJ-CoP-23 Scaffolding Code of Practice, v2 rev 0, June/July 2024 (read 2026-11-02)
- CISRS, system scaffold inspection card page (read 2026-11-02)
- NIST Global, Competent Person vs Qualified Person (14 May 2026) (read 2026-11-02; page is internally inconsistent on qualifications)
- AL-YASSIN exam page /exams/aramco-scaffold-inspector/ (own data, read 2026-11-02)
General guidance for learning, not legal or engineering advice. Verify every value against the latest edition and your client's own rules. AL-YASSIN is independent and is not endorsed or approved by Saudi Aramco, OSHA, BSI, NASC, CISRS, CSCS or any other body.