Preparing and operating tracked loading shovels to excavate ground and loose materials in the workplace — Lantra Awards Vocationally-Related Qualification Construction & Building Services Revision
This subtopic covers the essential competencies for excavating ground and loose materials using a tracked loading shovel, requiring interpretation of work
Topic Synopsis
This subtopic covers the essential competencies for excavating ground and loose materials using a tracked loading shovel, requiring interpretation of work instructions, organization of tasks with others, and strict compliance with safety and legal standards. It focuses on practical application such as site preparation, material handling, and precise excavation to meet contractual specifications while minimizing environmental and structural impact.
Key Concepts & Core Principles
- Pre-use checks and daily maintenance: Operators must inspect fluid levels, tracks/tyres, hydraulic systems, and safety devices before starting work to prevent breakdowns and accidents.
- Safe maneuvering and positioning: Understanding ground conditions, overhead obstructions, and stability limits to operate the excavator without tipping or causing damage.
- Excavation techniques: Correct methods for digging trenches, foundations, and bulk earthworks, including bucket control, depth grading, and spoil management.
- Loading and unloading: Efficiently loading materials onto dump trucks or stockpiles, ensuring even distribution and avoiding overloading.
- Backfilling and compaction: Properly filling excavations and compacting soil to prevent settlement and maintain site safety.
Exam Tips & Revision Strategies
- Ensure your portfolio includes clearly annotated photographs, operator checklists, and witness testimonies that directly address each performance criterion.
- During observations, verbalize your thought process to demonstrate understanding of risk assessments and decision-making (e.g., adjusting for material type).
- Practice efficient loading cycles with emphasis on safety, fuel economy, and minimizing machine travel to meet time-bound objectives.
- Keep a log of communication with team members and any adaptations made to the plan due to site conditions, showing problem-solving skills.
- Document how you managed time and any delays, with clear explanations of mitigation measures, to prove completion within the allocated time.
Common Misconceptions & Mistakes to Avoid
- Failing to conduct a thorough pre-start inspection of the machine and attachments, leading to unsafe operation or breakdowns.
- Miscommunication with the signaller/banksman regarding hand signals or radio instructions, causing disruptions or safety incidents.
- Incorrectly assessing the weight of loads or ground conditions, resulting in machine instability or tipping.
- Neglecting to check for underground services (e.g., using CAT and Genny) before excavating, risking service strikes.
- Using improper digging techniques (e.g., ramming, overloading bucket) that cause excessive wear, fuel consumption, or damage.
Examiner Marking Points
- Award credit for demonstrating accurate interpretation of method statements, risk assessments, and manufacturer’s instructions before commencing operations.
- Evidence of organizing with other workers (e.g., banksman, site supervisor) to establish safe work zones and logically sequence excavation tasks.
- Consistently following lift plans, wearing appropriate PPE, and using safety devices (e.g., ROPS/FOPS, seat belts) in compliance with legislation.
- Selecting and checking the correct attachments and resources (e.g., bucket type, fuel, grease) required for the specific excavation task.
- Implementing measures to protect underground services, adjacent structures, and the surrounding area, with no reportable incidents.
- Completing excavation to the specified dimensions, grades, and finish within the allocated time, with evidence of quality checks against contract information.