VCE VET Engineering Studies cheat sheet

Hierarchy of risk control, highest to lowest: eliminate, substitute, engineering controls, administrative controls, PPE.

SWMS/JSA documents a task's hazards, controls and responsible persons before high-risk work begins.

Isolation procedure (lock-out/tag-out): identify energy sources, shut down, isolate, lock and tag, test for dead, then work.

PPE for machining: safety glasses or face shield, no loose clothing, hair tied back, no gloves near rotating parts.

Hazard classes: physical, chemical, biological, ergonomic, psychosocial; each requires a different control type.

Environmental controls: bunded chemical storage, waste segregation (metal, oil, coolant, general), spill kit location.

Emergency response: raise alarm, evacuate to assembly point, report to warden; first-aid and fire equipment locations known before starting.

Noise exposure standard uses an 8-hour equivalent level; hearing protection is required above the workplace exposure limit.

Incident reporting: near misses are recorded because they identify hazards before injury occurs.

Vernier caliper reads main scale plus vernier scale; least count typically 0.02 mm.

Micrometer: barrel scale 0.5 mm divisions plus thimble scale; reading = barrel + thimble × least count.

Drill press speed rule: smaller drill diameter means higher spindle speed; larger diameter means lower speed.

Lathe: work rotates, single-point tool feeds axially or radially; facing, turning, parting, threading operations.

Milling: cutter rotates, work feeds; climb milling gives better finish, conventional milling is safer on backlash.

Grinder: abrasive wheel removes material; wheel must be rated above machine speed and ring-tested before mounting.

Hand tool selection: hacksaw for stock removal, file for finishing, taps and dies for internal and external threads.

Tool condition: blunt drill or file increases force, heat and risk of injury; replace or sharpen before use.

Guarding: interlocks, fixed guards and emergency stops must be verified functional before operating machinery.

Tolerance = upper limit minus lower limit; bilateral (±) splits equally, unilateral applies in one direction.

Fit types: clearance (hole larger than shaft), interference (shaft larger), transition (may be either).

Limits and fits notation: H7/h6 means hole tolerance H7 and shaft tolerance h6.

First-angle projection: view placed on the far side of the object; third-angle: view placed on the near side.

Orthographic views: front, top, side; hidden features shown as dashed lines, centrelines as chain lines.

Dimensioning rules: no duplicated dimensions, dimensions to visible features, smallest number of dimensions to fully define part.

Surface roughness Ra is an arithmetic average deviation in micrometres; lower Ra means smoother surface.

Geometric tolerances: flatness, straightness, squareness, parallelism, concentricity, runout.

Scale drawing: scale = drawing length ÷ actual length; always state units on the drawing.

Ferrous metals contain iron; non-ferrous do not; alloys combine metals to improve properties.

Plain carbon steel: low carbon (mild) is ductile and weldable; high carbon is harder and less weldable.

Heat treatment: annealing softens and relieves stress; normalising refines grain; hardening and tempering trade hardness for toughness.

Aluminium: low density, good corrosion resistance, high thermal conductivity, low melting point.

Thermoplastics soften on heating and can be remoulded; thermosets cure permanently and cannot be remelted.

Joining processes: welding fuses, brazing/soldering use filler at lower temperature, adhesives bond without heat.

Corrosion control: galvanising, painting, anodising, sacrificial anodes, stainless alloying with chromium.

Material selection criteria: strength, weight, cost, machinability, corrosion resistance, availability.

Casting, forging, rolling and extrusion are forming processes that change shape without removing material.

Marking out uses datum surfaces, scriber, centre punch, dividers and engineer's square for accuracy.

Cutting sequence: measure, mark, centre punch, cut oversize, then finish to line.

Drilling: centre drill first, then drill; use coolant and correct speed to control heat and chip clearing.

Tapping: drill size = tap major diameter minus pitch; use lubricant and reverse to break chips.

Welding defects: porosity (gas), slag inclusion, undercut, spatter, lack of penetration.

Fillet weld leg length and throat thickness: throat = leg × 0.707 for a 45° fillet.

Assembly practices: correct fastener grade, torque sequence, thread locking, alignment checks before final tightening.

Surface finishing: deburr edges, remove tool marks, then apply protective coating as specified.

Quality checks: dimensional inspection against drawing, visual weld inspection, non-destructive testing where specified.

Project stages: define need, research, design, plan, make, test, evaluate, document.

Gantt chart shows tasks against time; critical path is the longest dependent sequence determining project duration.

Design brief states the problem, constraints, criteria and end user needs.

Engineering problem-solving cycle: identify, analyse, generate options, select, implement, evaluate.

Risk assessment is part of planning; hazards are controlled before work starts, not after.

Bill of materials lists parts, quantities, specifications and suppliers for costing and ordering.

Testing and evaluation compare outcomes against the design criteria, not against personal preference.

Documentation: drawings, calculations, records of changes and test results form the project evidence.

Technical drawing is a universal language; standards ensure a drawing is read the same way by any tradesperson.

Communication channels: verbal, written, graphical, digital; each has a purpose and a record level.

Toolbox talk conveys task-specific hazards and controls to the whole team before work.

Active listening: confirm understanding by restating or questioning, especially for safety-critical instructions.

Conflict resolution: address the issue not the person, focus on facts and agreed procedures.

Reporting lines: escalate hazards or defects to the supervisor or leading hand promptly.

Team roles: leader, planner, operator, checker; clear roles reduce duplication and error.

Records: job cards, inspection sheets and maintenance logs provide traceability and support continuous improvement.

Engineering pathways: apprenticeship (Certificate III), traineeship, diploma, advanced diploma, degree.

Employability skills: communication, teamwork, problem solving, initiative, planning, self-management, learning, technology.

Safe Work practices and relevant legislation set the duty of care for employers and workers.

Sustainability: reduce, reuse, recycle; energy efficiency, waste minimisation and water conservation in workshops.

Life-cycle thinking considers material extraction, manufacture, use, disposal and recycling.

Lean principles: eliminate waste (overproduction, waiting, transport, overprocessing, inventory, motion, defects).

Quality systems such as ISO 9001 support consistent production and customer confidence.

Professional conduct: punctuality, safe behaviour, honesty in reporting, respect for diversity in the workplace.