Diagnose and correct main line blade C-17
You are a second-year apprentice saw technician in the Heyfield saw shop.
What has happened
The main breakdown line has started cutting 1.4 millimetres of deviation on 90 x 45 framing, which is outside the mill tolerance and is costing recovery on every board. The Sawmill Manager raised work order SW-26-0341 on circular blade C-17 and the Saw Doctor Supervisor has scheduled a swap to blade C-18 under SW-26-0347 so the line can keep running. C-17 last went through the shop three weeks ago for a routine sharpen; the history card shows no levelling since May. There is a note on the log yard register that batch LB-26-0912 contained a log with fire damage and embedded grit. The supervisor wants a full inspection, a diagnosis and a decision on whether C-17 returns to service.
Deliverables
- Completed work orders SW-26-0341 and SW-26-0347 with all readings
- Blade history card entries for C-17 and C-18
- Written diagnosis and recommendation to the Saw Doctor Supervisor
- Logbook entry describing the lock-out steps
Documents to use
Systems to use
Saw Shop Work Orders
Work orders for blade changes, sharpening, tipping, tensioning, machine alignment and external customer jobs, with blade identifiers and gauge readings.
Safety and Environment Register
Records injuries, near misses, hazards, environmental events and toolbox talks across all sites, with investigation status and corrective actions.
Log Yard and Stock Register
Tracks every log batch, kiln charge and sawn pack from receipt to despatch, with grade, volume, bay location and certification status.
Units of competency
Current on training.gov.au for the Forest and Wood Products Training Package as at 10 September 2026.
FWPCOT3282Assess and maintain saw blade and sawing machine performanceFWPSAW3233Sharpen circular saw bladesFWPSAW3237Level and tension circular saw bladesFWPCOT3280Replace saw blades, knives and guidesFWPSAW3247Replace tungsten tipsQualifications
FWP31021Certificate III in Saw TechnologyWhat to look for
Evidence guide
Evidence must show isolation and zero energy testing before the guard is opened and a two-person change. Readings on the work orders must be plausible and consistent with the diagnosis. Look for the student connecting the grit-contaminated log and the lack of levelling since May to the deviation. The return to service decision must be justified against the tolerance in the procedure, not on production pressure.