Elements and Performance Criteria
- Prepare work site
- The location of worksite and location of the correct tree is confirmed as per the scope of works.
- Required site permits and licences are obtained.
- Tree is inspected for structural defects.
- Site hazards are identified, risks assessed and suitable controls implemented.
- The work zone is confirmed with the work crew and is monitored.
- Traffic management plans for the work site are implemented.
- Communications are initiated, received and confirmed as an ongoing process.
- Prepare rigging
- Rigging method is determined and communicated to work crew.
- Rigging method confirms the risk controls selected in accordance with established and documented low risk work methods.
- Appropriate rigging equipment is selected.
- Rigging equipment is inspected for equipment defects assembled and installed.
- Design the rigging system
- The load limit of the rigging system is determined.
- Appropriate anchor and attachment points are selected.
- Load and balance calculations are performed.
- The impact of force under normal/failure conditions is determined and a safety factor is applied.
- Rigging system is designed to allow for the load and impact of the forces.
- Rigging system is communicated to work crew.
- Perform rigging operations
- Effective communications are maintained between the work crew during the sequence of the rigging process.
- Rigging is attached.
- Appropriate knots are used where required.
- Rigging system is monitored and adjusted in accordance with environmental conditions.
- Load is tensioned and tested.
- Load is controlled and raised, lowered or re-directed.
- The appropriate components of the rigging system are retrieved.
- Complete tree rigging operations