17771 Carry out Lineshifts in a Cable Harvesting Operation Using a Mobile Tailhold Machine

Explanatory notes

1Assessment against this unit standard must involvecarrying out at least three line shifts using a tail-hold machine.

2Definitions

Accepted industry practicerefers to approved codes of practice and standardised proceduresaccepted by the wider forestry industry as examples of best practice.

Worksite proceduresrefer to documented procedures used by the organisation carrying out the work and applicable to the tasks being carried out. They may include but are not limited to – standard operating procedures, site safety procedures, equipment operating procedures, quality assurance procedures, housekeeping standards, procedures to comply with legislative and local body requirements.

Outcomes and evidence requirements

Outcome 1

Demonstrate knowledge of requirements for the use of mobile tail-holdsin a cable harvesting operation.

Evidence requirements

1.1Types of machines suitable for use as mobile tail-holdsare described in accordance with accepted industry practice.

Rangeexcavator, tractor, skidder.

1.2Advantages of mobile tail-holdsare explained in accordance accepted industry practice.

Rangeease of line shift, flexibility of anchor location, minimising line shift times.

1.3Disadvantages of mobile tail-holdsare explained in accordance with accepted industry practice.

Rangecost of idling a machine, limited suitable terrain, security of mobile tail-holdanchoring, maintenance, environmental disturbance.

1.4Recommended methods of attaching working ropes to mobile tail-holdmachines are explained in accordance with accepted industry practice.

Rangeskyline attachment, tailrope block location, shackles.

Outcome 2

Demonstrate knowledge of hazards associated with using tail-holdmachines in cable harvesting operations.

Evidence requirements

2.1Effects of mechanical failure of the anchor point on the tail-holdmachine are described in accordance with accepted industry practice.

Rangeunexpected wire rope movement, falling carriage, shackle or block movement, tower failure.

2.2Dangers of tail-holdmachine instability are explained in accordance with accepted industry practice.

Rangetail-holdmachine toppling into work area, working ropes unexpectedly going slack, falling carriage, debris being dislodged, tower failure.

2.3Causes of loss of control when moving a tail-holdmachine are explained in accordance with accepted industry practice.

Rangemay include but is not limited to – tension at right angle to machine, unstable soil, excessive tension, communication failure.

2.4Hazards associated with shifting a tailhold machine with spiked safety boots are stated and explained in accordance with accepted industry practice.

Outcome3

Prepare a tail-hold machine for operation.

Evidence requirements

3.1Pre-start checks are carried out in accordance with the manufacturer’s requirements and worksite procedures.

Rangepre-start checks include but are not limited to – fluid levels, Operator Protection Structures (OPS), machine guarding, safety features, inspection of components, hydraulic hose condition, fire suppression, equipment in operator cab, operator visibility, debris in engine compartment;

evidence of ten checks is required.

3.2Maintenance checks are carried out in accordance with manufacturer’s requirements and worksite procedures.

3.3Defects and maintenance requirements are reported and/or rectified in accordance with accepted industry practice, manufacturer’s requirements, and worksite procedures

3.4Access to and egress from the tail-holdmachine are in accordance with accepted industry practice.

Rangefacing machine, three point contact, use of step and grab rails.

3.5Means of communication is checked for service, channel selection, and preparedness for use in accordance with worksite procedures.

Outcome 4

Start up a mobile tail-hold machine.

Evidence requirements

4.1Start-up requirements are explained in accordance with the manufacturer's requirements.

4.2Warning indications are explained, and rectifying actions are described in accordance with the manufacturer's requirements.

Rangemay include – high oil or water temperature, low oil levels, low engine oil pressure, oil filter replacement, computer equipment.

4.3Machine is startedand warmed up in accordance with the manufacturer's requirements.

Outcome5

Carry out line shifts using mobile tail-holds.

Evidence requirements

5.1The new location for the tail-holdmachine and the route of travel are determined and checked in accordance with worksite procedures.

5.2Means of communication with yarder operator is established and checked in accordance with the accepted industry practice and worksite procedures.

5.3The location of other personnel,in proximity to working ropes,is checked in accordance with worksite procedures, before working rope movement is undertaken.

5.4Terrain is negotiated in accordance with accepted industry practice.

5.5Tension in working ropes being moved is constantly monitored and adjusted in accordance with worksite procedures.

5.6Thetail-holdmachine is secured at the new location in accordance with accepted industry practice.

Rangemachine alignment, resistance, stability of ground.

5.7Tight-lining is signalled when personnel are clear of the tail-holdmachine and the ropes being tensioned, in accordance with accepted industry practice.

5.8Tail-hold machine security is maintained during tight-lining in accordance with accepted industry practice.

5.9Tail-hold machine security is assessed and additional measures are takenas required to ensure security in accordance with accepted industry practice.

Rangemay include –digging in, relocation, anchoring.

5.10Final position is checked with yarder operator and breaker-outs in accordance with worksite procedures.

Rangewithin guyline spacing, in line with wood, working ropes clear.

Outcome6

Carry out general tail-holdmachine operator responsibilities.

Evidence requirements

6.1Operator and engine compartments are cleared of debris and loose equipment.

6.2Fire extinguishers are checked to meet worksite requirements in accordance with worksite procedures.

Rangecharged, suitable, secured, within servicing requirements.

6.3Maintenance of the tailholdmachine is performed in accordance with the manufacturer’s requirements and worksite procedures.

Outcome 7

Shut down a tail-hold machine.

Evidence requirements

7.1Machine is shut down in accordance with the manufacturer's requirements.

Rangemay include but is not limited to – hydraulic lock engaged, engine idled down, turbo timer used.

7.2Post-operational checksof the machine are carried out in accordance with manufacturer’s requirements and worksite procedures.

Rangepost-operational checks include but are not limited to – wear on components, damage to components, hydraulic leaks, structural damage, track condition, hydraulic fluid level;

evidence of six checks is required.

Status information and last date for assessment for superseded versions

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Please note

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Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.

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