ISO 24037:2020 Crane Operator Competency Assessment Guide
ISO 24037:2020, "Cranes — Operator — Competency Assessment," is the international standard governing the competency evaluation of crane operators. It defines the theoretical examination, practical skills assessment, and overall evaluation methodology to ensure operators possess the necessary capabilities for safe crane operation.
Competency Assessment Framework
The operator competency framework established by ISO 24037:2020 covers four key dimensions: theoretical knowledge (crane structure and working principles, safety regulations, load calculation, and applicable standards), operational skills (basic operations, combined maneuvers, and operation under specific operating conditions), safety behavior (pre-operation inspection, adherence to safety regulations, and emergency response capability), and professional attitude (responsibility, communication and teamwork, and safety awareness). Assessment outcomes are classified into three grades: Competent (qualified for independent operation), Needs Further Training (partial skill deficiencies requiring additional instruction), and Not Competent (not qualified to operate, requiring full retraining).
The framework applies to three categories of operators: new hires (must complete full training and assessment before being assigned to a crane), active operators (re-assessed every 2 years), and operators transitioning between crane types (must be re-assessed when moving from one machine type to another). The standard also mandates that assessments be conducted by independent certified assessors — third-party personnel not affiliated with the training provider or the employing organization — to ensure objectivity and impartiality.
Theoretical Knowledge Examination
The theoretical examination covers six content areas: crane fundamentals (types, structure, and working principles — 15% of the exam), safety regulations (daily inspection items, operating procedures, and prohibited actions — 25%), load and parameters (Load Chart interpretation, determining Rated Lifting Capacity, and Safety factor — 20%), signals and communication (hand signals, whistle signals, and wireless communication procedures — 15%), standards and regulations (relevant ISO standards and local regulatory requirements — 15%), and emergency response (common faults and handling of emergency situations — 10%).
The exam is administered as a closed-book written test comprising multiple-choice questions (40%), true/false items (20%), and short-answer questions (40%). The minimum passing score is 80 out of 100, and the exam duration is at least 90 minutes. Exam content must align with the training course for the operator's target crane type. Theoretical examination results remain valid for 2 years, after which operators must undergo refresher training and re-examination. Kelude provides crane operator theoretical training and examination question bank services.
| Assessment Subjects | Content | Weighting | Acceptance Criteria |
|---|---|---|---|
| Fundamental Knowledge | Type/Structure/Principle | 15% | ≥80Points |
| safety regulations | daily inspection/Operation/Prohibited | 25% | ≥80Points |
| Load Parameter | Load Chart/Lifting Capacity Calculation | 20% | ≥80Points |
| signal communication | Hand Signals/Whistle Signals/Radio Control | 15% | ≥80Points |
| Standard Regulations | ISO/National/Industry | 15% | ≥80Points |
| Emergency Response | Fault/emergency situation | 10% | ≥80Points |
Practical Operating Skills Assessment
The practical assessment covers basic operations (independent Hoisting, Lowering, Slewing, Luffing, and traveling maneuvers completed within a specified time, with accuracy meeting requirements—suspended load placement deviation ≤100mm), combined operations (simultaneously operating 2–3 functions, such as slewing while hoisting or luffing while slewing, with smooth and coordinated motion), operating conditions-specific tasks (lifting in confined spaces, heavy-load lifting, precision lifting, and multi-person coordinated lifting), and emergency operations (emergency stop, fault elimination, and manual release).
The practical assessment uses an item-by-item scoring system—each operation has defined pass criteria and scoring details (operating regulations compliance 40% + accuracy indicator 30% + time efficiency 20% + safety behavior 10%). A passing score for each individual item is ≥80% (80% of the full marks for that item), and an overall score of ≥85% is required to pass. The practical assessment must be conducted in an actual or simulated working environment (a simulator may serve as a supplementary assessment tool but cannot fully replace evaluation on real equipment). The entire assessment process is recorded and archived (retained for ≥3 years).
Assessment Report & Certificate
Upon completion of the assessment, the assessor issues an evaluation report covering: operator basic information (name, ID number, employer), crane model assessed (brand, model, and specifications), assessment results (theory score, itemized practical scores, and overall grade), assessor's opinion (confirming the crane types the operator is qualified to operate independently), and validity period (certificate validity: 2 years). The assessment report must be signed by the assessor and stamped by the assessment organization. Before the certificate expires, the operator must complete refresher training and pass a re-assessment to renew certification.
Kelude provides crane operator competency assessment services—conducted by certified assessors in accordance with ISO 24037:2020, issuing evaluation reports and competency certificates. We also offer operator training courses tailored to specific crane models to help operators pass the competency assessment.
| Practical Assessment Items | Evaluation Criteria | Pass Standard | Scoring Weight |
|---|---|---|---|
| Basic Operations | Hoisting / Lifting/Slewing/traveling | Deviation≤100mm | 30% |
| Combined Operations | Simultaneously2~3Motions | Coordinated and Smooth | 25% |
| Specificoperating conditions | Confined/Oversized Load/Precision | Specialized Standard | 25% |
| emergency operation | emergency stop/Fault/Release | Correct and Prompt | 20% |
Frequently Asked Questions
Q: What is the assessment framework under ISO 24037:2020?
A: The framework covers four dimensions — theoretical knowledge, operational skills, safety behavior, and professional attitude. Results are graded into three levels: pass, training required, and fail. It applies to new hires, routine on-site reassessments (every 2 years), and operators transitioning to different crane types. Assessments must be conducted by an independent third-party assessor.
Q: What does the theoretical examination cover and what is the passing score?
A: The exam covers crane fundamentals (15%), safety regulations (25%), load parameters (20%), signal communication (15%), standards and regulations (15%), and emergency response (10%). It is a closed-book written test lasting at least 90 minutes, with a passing score of 80 or above. Results remain valid for 2 years.
Q: How is the practical assessment scored?
A: Scoring is itemized — operating procedures (40%), accuracy indicators (30%), time efficiency (20%), and safety behavior (10%). A minimum of 80% is required for each individual item, with an overall score of 85% or higher to pass. Assessments are conducted on actual cranes (with simulator support) and recorded in full, with footage retained for at least 3 years.
Q: How long is the assessment certificate valid?
A: The certificate is valid for 2 years. To renew, operators must complete refresher training and pass a reassessment before the expiry date. Operators transitioning to different crane types must undergo a full reassessment. Kelude offers both operator competency assessment services and training courses.
