Mobile Crane Safety Examination

Questions and Answers

Which of the following is NOT a responsibility of the operator during the pre-use inspection?

Conducting a hydraulic fluid analysis (correct)

Visually checking for signs of defect

Reporting findings to maintenance personnel

Ensuring the functionality of the crane

What primarily influences the frequency and extent of interim inspections?

Manufacturer's recommendations alone

Industry-wide regulations only

The operator's personal judgment

Risk assessment procedures (correct)

Competence in carrying out pre-use inspections includes which of the following?

Formal certification from any entity

Training and assessment (correct)

Recent practical experience only

Only theoretical knowledge of equipment

During the pre-use inspection, what should be prioritized before operating the crane?

Ensuring safety checks are completed Signup and view all the answers

What type of inspection is typically performed during planned maintenance?

Interim inspection Signup and view all the answers

Which of the following components may be a focus during interim inspections?

Critical components potentially leading to failure Signup and view all the answers

What is the correct condition for the operator's seat during checks?

It must be in good condition and operate in all modes. Signup and view all the answers

How should pre-use checks of cranes be conducted?

From a safe position Signup and view all the answers

What does the term 'In-Service inspection' refer to?

A risk assessment based examination during operation Signup and view all the answers

Which of the following must be confirmed regarding safety glass in the cab?

All glass must be safety glass as specified by the manufacturer. Signup and view all the answers

What is essential to check regarding the control functions and switches?

They must be clearly marked and perform as indicated. Signup and view all the answers

In terms of housekeeping in the cab, what is the primary requirement?

It should be completely uncluttered and tidy with rubbish removed. Signup and view all the answers

What should be verified about the swing brake during the checks?

It should engage and hold securely. Signup and view all the answers

What is needed for the crane load charts in the operator cab?

They should be present and specific to the crane being operated. Signup and view all the answers

Regarding the cab's operational features, which of the following must function correctly?

Lights and windscreen wipers/washers must function correctly. Signup and view all the answers

What should be checked regarding loose wires or panels in the cab?

There should be no loose wires or panels anywhere in the cab. Signup and view all the answers

Which components should specifically be visually inspected for hydraulic system maintenance?

Hydraulic cylinder fittings and oil levels Signup and view all the answers

What is the primary purpose of examining the outrigger jacks and beams?

To ensure stability and safe operation during lifting Signup and view all the answers

During the power and control cables inspection, which element is NOT typically assessed?

The condition of the crane chassis Signup and view all the answers

Which of the following devices should be included in the limiting and indicating devices check?

Over hoist and over lower limits Signup and view all the answers

What critical aspect should be included in leak detection and management?

Visual inspection of hydraulic lines and connections Signup and view all the answers

When performing P.T.O. operation checks, which system's functionality must be ensured?

The hoist and luffing winches' brake systems Signup and view all the answers

Which of the following is NOT part of a thorough examination of the crane's control system?

Testing the efficiency of hydraulic cylinder fittings Signup and view all the answers

What should be checked to ensure the efficiency of outrigger examination?

Visual inspection of all pivoting joints Signup and view all the answers

What is a primary characteristic of yard cranes?

They are designed primarily for yard use and may have outriggers. Signup and view all the answers

What distinguishes crawler mounted telescopic cranes in terms of inspection methods?

Their tracks can be inspected with the same methods as wheeled cranes, except for the undercarriage. Signup and view all the answers

Which standards provide criteria for crane inspection alongside LEEA guidance?

BS7121-2-1 and BS7121-2-3 Signup and view all the answers

What major advancement has changed the way tracks of crawler mounted telescopic cranes are inspected?

The transition from mechanical to hydraulic drive systems. Signup and view all the answers

What is one of the primary functions of the strong platform on yard cranes?

To support the movement of light loads like pumps and valves. Signup and view all the answers

How do telescoping cranes mounted on tracks differ from traditional wheeled cranes during inspection?

They do not need undercarriage inspections. Signup and view all the answers

Why might yard cranes need outriggers despite being designed for yard use?

To enhance stability on uneven ground when necessary. Signup and view all the answers

What is one challenge regarding the inspection of cranes mentioned in the guidelines?

The need to comply with multiple differing standards and protocols. Signup and view all the answers

What is the main reason for maintaining cleanliness in the inspection area?

To ensure visibility of any deterioration or damage Signup and view all the answers

Which of the following items is NOT recommended to carry for inspecting mobile cranes?

Heavy-duty cleaning solvent Signup and view all the answers

What precaution should be taken when testing a crane for 'lift on rubber' duties?

Have the outriggers extended and jacks clear of the ground Signup and view all the answers

Why is it important to adhere to data sheets and chemical warnings when using cleaning materials?

To prevent chemical interactions with crane materials Signup and view all the answers

Which statement accurately reflects the safety protocols during a crane inspection?

Reassessment of cleanliness is necessary prior to the inspection Signup and view all the answers

What should be included in a crane manufacturer's load rating chart for 'on rubber' lifts?

Load ratings specific to the configuration used Signup and view all the answers

What is the purpose of lifting on rubber for rough terrain cranes?

To enable movement without unloading Signup and view all the answers

What should be assessed in the crane area before proceeding with the inspection?

The presence of contaminants affecting equipment Signup and view all the answers

What is the primary requirement for the crane's positioning during a thorough examination?

To select an area that is safe and suitable for examination. Signup and view all the answers

What is a primary reason manufacturers might not recommend routine overload testing?

It can lead to deterioration of the crane structure. Signup and view all the answers

Which requirement must be verified regarding the crane's identification before the examination?

The crane's I.D. and rated capacity markings against the crane records. Signup and view all the answers

Which situation is generally accepted as a valid reason for performing an overload test?

Use in arduous duties. Signup and view all the answers

What must be ensured regarding access to the crane during a thorough examination?

Safe access and egress arrangements must be established. Signup and view all the answers

What potential consequence is highlighted if a crane fails during overload testing?

Danger and high expenses. Signup and view all the answers

Why is it important to ensure the crane is clean before the examination?

To prevent the inability to detect potential defects. Signup and view all the answers

What should the examiner check regarding the crane's maintenance history?

Whether required modifications or alterations have been made. Signup and view all the answers

Which underlies the recommendation against routine overload testing by authoritative bodies?

No defined structural or mechanical benefit. Signup and view all the answers

What should be thoroughly examined before applying a load to a crane during testing?

The crane's rigging according to the manufacturer's instructions. Signup and view all the answers

What is the function of personal protective equipment (PPE) in the context of crane examinations?

To ensure agreed safety measures before access. Signup and view all the answers

Why can repeated overload situations be problematic according to crane operation standards?

They may not show defects through overload testing. Signup and view all the answers

What must be included in the documentation reviewed by the competent person during the examination?

The previous thorough examination report and related legal documents. Signup and view all the answers

Which of the following is NOT a recommended action prior to a thorough crane examination?

Collecting unnecessary paperwork not related to the crane's operation. Signup and view all the answers

In preparing for a test on a mobile crane, what is the first step that must be undertaken?

Seeking advice from the manufacturer or suitable design authority. Signup and view all the answers

Which factor is NOT listed as a circumstance under which overload testing may be considered necessary?

Routine performance checks. Signup and view all the answers

Which feature must be confirmed to ensure proper visibility for the operator?

There are no obstructions to the operator's view Signup and view all the answers

What indicates that the swing brake is functioning correctly during inspections?

The swing brake engages and holds Signup and view all the answers

What is essential about the operator's seat during the inspection process?

It must be in good condition and operate in all modes Signup and view all the answers

Which of the following must be present in the operator cab for safe crane operation?

Crane-specific load charts Signup and view all the answers

What characteristic of the cab's glass is crucial for safety checks?

It must be safety glass as specified by the manufacturer Signup and view all the answers

Which condition must the lights and windscreen wipers be in before operating the crane?

They must function correctly Signup and view all the answers

What must be true about the control functions during inspection?

They must be clearly marked and perform as marked Signup and view all the answers

Which aspect is essential for the tilt cab mechanism inspection?

It must operate correctly if applicable Signup and view all the answers

Study Notes

Mobile Crane Safety and Inspections

The chassis and tyres are crucial for mobile crane safety; they require thorough examination.
Key components to inspect include:
- Manufacturer’s information plate/label and duty charts
- Tyres, wheels, and axle locking systems
- Crane chassis, crawler tracks, and outrigger jacks with beams
- Braking systems, bolts, pins, and fastenings
- Slew section structure and slew mechanism, with full movement checks
- All piping, hydraulic cylinder fittings, and oil/fluid levels
- Superstructure, jib, fly jib, and all pivoting joints
- Wire ropes, pulleys, sheaves, drum guards, and counterweight systems
- Limiting devices like rated capacity systems and anemometers

Levels of Crane Inspection

Pre-use Inspection:
- Conducted by the operator to check for defects or operational safety.
- Involves visual checks and functionality assessment; issues must be reported for further inspection.
- Competence in conducting these checks is essential, relating to training and assessment.
Interim Inspection:
- Focuses on critical components that may deteriorate before the next thorough examination.
- Frequency is determined by risk assessments and manufacturer's recommendations.
- Often conducted during planned maintenance or after repairs.

Operator and Cab Controls

Cab cleanliness and organization must be maintained, ensuring no obstructions.
Operator’s seat must be functional and in good condition.
Inspect for loose wires, functional RCL, presence of load charts, and clarity of control markings.
Ensure safety and operational effectiveness of swing brakes, tilt mechanism (if applicable), lights, and other controls.
Both windscreen wipers and air conditioning/heating systems should operate correctly.

Crane Controls

All control functions and switches must be clearly marked and responsive as indicated.
Regular checks are essential for safe and efficient crane operation.

Cleaning Materials

Ensure the inspection area is clean to prevent contaminants from obscuring any equipment damage or deterioration.
Carry basic cleaning supplies, such as rags, wire brushes, and pH neutral cleaning fluids, to clean inspected components as necessary.
Adhere to chemical safety data sheets and ensure risk assessments include cleaning materials.

Types of Mobile Cranes

Rough Terrain Cranes

Designed for rough terrain; capable of "lift on rubber" where lifting and traveling occur simultaneously.
Safety precautions require outriggers to be extended and jacks clear of the ground during function testing to prevent risks from tire failure.

Yard Cranes

Suitable for yard applications where outriggers may not be practical; can operate on rubber.
Designed to transport light loads like pumps and motors, providing a stable platform.

Crawler Mounted Telescopic Cranes

Used for on-site operations; easier to inspect due to hydraulic drive systems.
Inspection procedures are similar to wheeled cranes, with attention to the undercarriage.

Types of Examination

Adhere to BS7121-2-1 and BS7121-2-3 standards for thorough crane inspections.
ISO9927-1 and ISO9927-5 provide similar guidelines for crane examinations.

Preparation for a Thorough Examination

Safety: Position cranes in safe areas for inspection.
Lighting: Ensure well-lit inspection environments or use portable lights if necessary.
Cleanliness: Cranes should be clean to avoid concealing defects; examiners should not be responsible for cleaning.
Access: Establish safe access for inspection personnel, using suitable platforms and ensuring workers are trained for equipment use.
Identification: Verify ID and capacity markings against crane records, legal documents, and previous inspection reports.
History: Review past inspection reports and maintenance logs for recorded defects or alterations.

Load Testing Mobile Cranes

Consult manufacturers for advice on testing methods and load magnitudes before starting.
Conduct visual examinations of cranes and testing areas prior to load application.
Ensure proper rigging based on the manufacturer’s instructions is verified during examinations.

Operator and Cab Controls

Ensure cab cleanliness, with no clutter, and that operator controls are fully functional.
Check the operational condition of the operator’s seat, RCL, and crane-specific load charts present in the cab.
Ensure unobstructed operator views and that safety glass is used without unauthorized modifications.
Confirm that all switches are clearly marked and operational, including the swing brake and tilt cab mechanism.
Verify the functionality of lights, windshield wipers, and air conditioning/heating controls.

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Description

This quiz focuses on the critical components involved in the safety examination of mobile cranes. It covers aspects such as manufacturer information, tyres, wheels, and chassis integrity. Understanding these components is essential for ensuring the safe operation of mobile crane systems.