Crane Assessment Criteria Quiz

Questions and Answers

What factor is NOT considered by the Competent Person for determining inspection frequency?

Geographical location of the appliance (correct)

Type of hoist

Manufacturer's recommendations

Previous inspection results

Which of the following is a requirement for maintaining inspection records?

All inspections should be documented (correct)

Records can be kept in any format

Only major defects need to be recorded

Records must be destroyed after one year

What does the Severity Rating indicate during wire rope assessment?

The recommended replacement date

The length of the wire rope

The overall condition as a percentage (correct)

The weight capacity of the hoist

Which method is NOT suggested for assessing the condition of wire ropes?

Ultrasonic testing Signup and view all the answers

How should the overall condition of wire rope be assessed?

By averaging the severity ratings of individual criteria Signup and view all the answers

Which of these factors would NOT be relevant to the inspection frequency of a hoist?

User satisfaction with the product Signup and view all the answers

Which type of assessment provides a holistic view of a wire rope's condition?

Combined effect assessment Signup and view all the answers

What is the minimum level of inspection severity that suggests a wire rope should be discarded?

100% Signup and view all the answers

What is indicated by a 'bluing' of the steel in a damaged area?

Heat or electric arcing damage Signup and view all the answers

Which method is preferred for further investigation of arcing damage?

Magnetic Resonance Testing (MRT) Signup and view all the answers

What usually causes mechanical damage to ropes?

Contact with crane structure or external loads Signup and view all the answers

Which aspect is essential for maintaining competency in inspection protocols?

Regular participation in Continuous Professional Development (CPD) Signup and view all the answers

What is the primary focus of defect assessment in crane inspections?

Determining the severity of deterioration Signup and view all the answers

In Thorough Examination Protocols, what is particularly emphasized for hidden parts?

Involving advanced diagnostic methods Signup and view all the answers

Which of the following is NOT a type of deterioration identified in the inspection protocols?

Chemical corrosion Signup and view all the answers

During a defect assessment, what should be the role of the inspector?

Identify and evaluate potential failures Signup and view all the answers

What is an important criterion for assessing the accuracy of limiting and indicating devices on a crane?

Must be within manufacturer's tolerance Signup and view all the answers

Which of the following defects would NOT affect the strength or functionality of a crane?

Alignment as specified by the manufacturer Signup and view all the answers

What is the significance of assessing the condition of the rope on mobile cranes operating in corrosive environments?

To determine if it needs to be replaced due to damage Signup and view all the answers

Which aspect of crane assessment involves checking for full or partial seizure of components?

Seizure Signup and view all the answers

What criteria must be met regarding the adjustment of a crane?

As specified by the manufacturer Signup and view all the answers

What does 'tidiness' in crane assessment refer to?

General housekeeping around the crane Signup and view all the answers

Which defect assessment criterion focuses on potential slips caused by leaks?

Fluid levels Signup and view all the answers

In assessing 'wear' on crane components, what should be prioritized?

Impact on strength or functionality Signup and view all the answers

What is the primary purpose of the LEEA Mobile Cranes Diploma qualification?

To provide essential skills for testing and inspecting mobile cranes Signup and view all the answers

What can students do upon successful completion of the Mobile Cranes Diploma course?

Perform thorough examinations of mobile cranes Signup and view all the answers

Which of the following is NOT included in the scope of the mobile cranes course?

Operating mobile cranes in extreme weather Signup and view all the answers

What aspect is crucial for ensuring the competency of individuals involved in mobile crane inspections?

Continuous training in updated protocols Signup and view all the answers

What is the purpose of Rated Capacity Indicators (RCIs) in the context of mobile cranes?

To indicate the maximum load a crane can safely lift Signup and view all the answers

What type of chains should be assessed during a thorough examination of mobile cranes?

Load-bearing chains Signup and view all the answers

Which element is critical in the preparation for a thorough examination of mobile cranes?

Conducting a preliminary inspection Signup and view all the answers

Which of the following describes the main focus of the types of examination covered in the course?

Both mechanical and structural assessments Signup and view all the answers

What is the significance of assessing the alignment of components during crane inspections?

It affects the overall functionality and operational safety. Signup and view all the answers

Which aspect should be evaluated to determine if the brake performance of a crane is satisfactory?

The performance within the manufacturer’s specified tolerance. Signup and view all the answers

Why is it important to assess the condition of guards during crane inspections?

They play a role in preventing accidents by ensuring safety. Signup and view all the answers

What does assessing 'corrosion' during crane inspections involve?

Evaluating its impact on the strength and functionality of components. Signup and view all the answers

What does 'backlash' refer to in the context of crane assessment?

The play or lost motion in mechanical components. Signup and view all the answers

In crane defect assessment, which of the following is most critical for the functionality of the crane?

The operational limits defined by the manufacturer. Signup and view all the answers

What role does 'lubrication' play in crane inspections?

It must be adequate to prevent wear and ensure proper functioning. Signup and view all the answers

How is 'security' evaluated in crane assessments?

By checking the attachment and condition of components, fasteners, and welds. Signup and view all the answers

What is the maximum allowable slope for leveling a crane during operation?

±0.5% Signup and view all the answers

Which of the following methods can be used to verify the level of a crane?

Using a spirit level Signup and view all the answers

What should be done if the slope of the crane exceeds the allowable limit during testing?

Stop testing and re-level the crane Signup and view all the answers

Why are tyre pressures critical for mobile cranes lifting free on rubber wheels?

They affect the stability margin of the crane. Signup and view all the answers

What should be prioritized in your reports after inspecting equipment?

Safety critical issues and recommendations Signup and view all the answers

How should equipment be marked if it is removed from service?

DO NOT USE Signup and view all the answers

What is an important consideration when conducting overload testing on cranes with jibs?

Following the manufacturer's instructions Signup and view all the answers

What is an essential step to take before leaving a site after completing work?

Ensuring customer satisfaction Signup and view all the answers

Which of the following is true regarding lifting capacities of mobile cranes?

They are marked as gross loads. Signup and view all the answers

What is an important consideration when identifying repairs for equipment?

The necessary timescale for repairs Signup and view all the answers

What should be done before conducting overload testing on cranes with fly jibs?

Verify that the fly jib is erected according to manufacturer’s instructions. Signup and view all the answers

What tool is NOT mentioned as potentially required by the Mobile Crane examiner?

Pressure washer Signup and view all the answers

What is a requirement for the tyre pressure of a mobile crane during static conditions?

It may differ from road travel pressure. Signup and view all the answers

What should you do immediately if a safety critical issue is identified during inspection?

Notify the owner of the equipment Signup and view all the answers

During the debrief meeting, what is the primary focus of your presentation?

Summary of the report and findings Signup and view all the answers

What aspect of personal behavior is emphasized for equipment users while maintaining their competencies?

Exemplary personal behaviors always Signup and view all the answers

What should be verified against the rated capacity chart for correct RCL operation?

Closed boom length Signup and view all the answers

Which action is NOT part of verifying the RCL's operation?

Measure the internal gearing Signup and view all the answers

When checking the Load Monitoring Indicator, what must be ensured?

The indicator is functioning and secure Signup and view all the answers

What is the recommended approach for examining the swing drive if it is externally positioned?

Use auditory and visual observations Signup and view all the answers

What condition might indicate a problem with the swing drive mechanism?

Excessive wear on the gear teeth Signup and view all the answers

What is the purpose of using a dial test indicator (DTI) after noting excessive movement in cranes?

To compare with manufacturer's readings Signup and view all the answers

What action should be taken to verify the RCL's accuracy during operation?

Check load capacity against known load Signup and view all the answers

During the slewing operation, what sound might indicate a potential issue?

A grinding noise from the drive motor Signup and view all the answers

Study Notes

Assessment Criteria for Cranes

Examination focuses on defects impacting the crane's strength or functionality.
Key assessment criteria include:
- Accuracy of limiting and indicating devices based on manufacturer’s tolerance.
- Compliance with manufacturer specifications for adjustments, alignments, backlash, and bearing play.
- Brake performance must meet manufacturer’s defined tolerances.
- Corrosion, cracks, damage, and distortion should not affect strength or functionality.
- Fluid levels and cylinder creep are assessed against manufacturer’s standards.
- Check for guards: presence and condition are crucial for safety.
- Inspections for leaks affecting functionality and safety (e.g., slips).
- Adequacy of lubrication impacts operational effectiveness.
- Ensure proper markings are accurate, present, and in good condition.
- Mode of operation should align with original manufacturer intentions.
- Obstructions must be cleared for safe access around the crane.
- Rope fit and specification must conform to manufacturer’s guidelines.
- Security of components, including fasteners and welds, is vital.
- Check for full or partial seizure of rotating components.
- General housekeeping should reflect good tidiness practices.
- Rope condition assessed per ISO 4309 standards; critical for safety.

Special Considerations for Mobile Cranes

Evaluate wire ropes used in corrosive or abrasive environments for damage.
Frequent inspections may be required based on:
- National statutory requirements.
- Hoist type and environmental conditions.
- Previous inspection outcomes and historical performance.
- Length of service for the wire rope and frequency of hoist operation.
- Manufacturer's original recommendations may dictate inspection schedules.

Inspection Record Keeping

Every inspection must be documented by a Competent Person.
Maintain a running record of crane rope inspections as per ISO 4309.
Examples of documentation standards can be found in accompanying appendices.

Wire Rope Condition Assessment

Assess extent and severity of deterioration as a percentage (% Severity Rating).
Use descriptors like ‘slight,’ ‘medium,’ ‘high,’ ‘very high,’ or ‘discard’ for deterioration levels.
Utilize various inspection methods, including Magnetic Rope Testing (MRT), for comprehensive assessment.
Combined effect assessment gives an overall condition status for wire ropes.

Types of Deterioration

Recognize various faults beyond just broken wires that can compromise wire rope performance and lifespan.

Damage Assessment Techniques

Look for heat or electric arcing damage indicated by steel 'Bluing'—MRT is recommended for deeper analysis.
Mechanical damage often results from rope contact with crane structures or external loads.

Assessment Criteria for Mobile Cranes

Thorough examination targets defects impacting crane strength and functionality.
Key assessment criteria include accuracy, adjustment, and alignment of limiting and indicating devices.
Backlash and bearing play must be within manufacturer’s specified tolerances.
Brake performance, cylinder creep, and fluid levels require monitoring as per manufacturers' guidelines.
Checks for corrosion, cracks, distortion, damage, and wear that could affect crane operability.
Fluid leaks could compromise strength, functionality, and create safety hazards.
Essential checks include guard presence, rope specifications, and condition.
Component security, lubrication adequacy, and general housekeeping must be ensured.
Rope condition must comply with ISO 4309 standards.

Overview of the Mobile Cranes Diploma (MOB)

Essential qualification for those involved in testing, inspecting, and examining mobile cranes.
Recognized globally as the industry standard for lifting equipment professionals.
Successful completion equips participants to perform thorough examinations and validations regarding equipment suitability.
Participants learn to gather information effectively for assessing lifting equipment.

MOB Course Scope

Covers on-site procedures, equipment, different types of mobile cranes, and examination types.
Teaches assessment criteria and preparation for thorough examination.
Addresses competency requirements and load testing methodologies.
Involves practical examination components, such as crane carrier and telescoping structure assessments.
Focuses on chain and wire rope examination, and the importance of rated capacity charts.

Post-Examination Procedures

Immediate reporting of safety-critical issues is essential; equipment must be quarantined if necessary.
Identifying needed repairs with a realistic timeline is crucial for safety and compliance.
Debriefing with site contact to summarize findings and ensure customer satisfaction is part of the process.

Examiners' Tools and Equipment

Examiners should have various hand tools, including spirit levels and load cells, tailored for specific tasks.
Compliance with manufacturer’s instructions is paramount, especially for jibs and overload testing.
Checks for crane leveling should ensure a maximum slope of ±0.5%.

Lifting Capacities and Safety Checks

Load ratings should reflect gross loads as per manufacturer’s rated capacity charts.
Rated Capacity Limiter (RCL) functionality is verified through specific checks against load charts.
Load Monitoring Indicators must be properly functioning during examinations.
For swing gear mechanisms, visual and auditory inspections help identify issues.
Excessive movement under load requires measuring with a dial test indicator for precision assessment.

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Description

Test your knowledge on the thorough assessment criteria for cranes and their supporting structures. This quiz covers accuracy, adjustment, and alignment of components as specified by manufacturers. Understand the standards needed for ensuring the strength and functionality of cranes.