CPC30620 Painting key terms

The legal obligation of a person conducting a business or undertaking, and of each worker, to take reasonable steps to protect health and safety. On painting sites it covers hazard identification, safe systems of work, consultation and incident reporting.

A ranked order of risk treatments, from most to least reliable: eliminate the hazard, substitute it, use engineering controls, apply administrative controls, then rely on personal protective equipment as the last line of defence.

A structured process of identifying hazards, judging how likely and how severe the harm could be, and deciding what controls are needed before work starts. It is recorded and reviewed when conditions change.

A written breakdown of a task into sequential steps, with the hazards of each step and the controls applied. Also called a safe work method statement in some jurisdictions. It is prepared before high-risk painting work begins.

A document setting out high-risk construction activities, the hazards involved, the control measures and how those controls will be implemented, monitored and reviewed. Workers must follow it and it is kept on site.

Clothing and equipment worn to reduce exposure to hazards, such as respirators, safety glasses, gloves, hearing protection and protective footwear. PPE is selected to suit the task and maintained in serviceable condition.

A quick user test performed each time a tight-fitting respirator is worn, confirming a seal by covering the filters or exhalation valve and checking for leakage. A formal fit test is done less often to verify the model suits the wearer.

A supplier document summarising a hazardous chemical's identity, hazards, safe handling, exposure controls, first aid and spill response. It must be current, accessible to workers and used to inform risk controls.

A list kept at the workplace of all hazardous chemicals used or stored, cross-referenced to current safety data sheets. It supports emergency planning, storage decisions and worker consultation.

Solvent and other organic substances that evaporate readily at room temperature and can be inhaled. They are found in many paints, thinners and adhesives, and drive ventilation and respiratory protection requirements.

The lowest temperature at which a liquid gives off enough vapour to ignite when exposed to an ignition source. It determines how a product is classified, stored and used near hot work.

A written authorisation required before entering an enclosed or partially enclosed space with restricted access and poor natural ventilation. It records atmospheric testing, isolation, controls, entrants and rescue arrangements.

Any work where a person could fall from one level to another and be injured. For painters it includes ladders, trestles, scaffolds, planks and elevated work platforms, all of which need fall prevention controls.

Documentation confirming that a scaffold has been erected, altered or inspected by a competent person and is safe to use. It identifies the duty rating, date and any restrictions before painters load it.

The load capacity and duty classification assigned to a ladder by its manufacturer, indicating whether it suits industrial, trade or domestic use. Painters must match the rating to the task and inspect the ladder before use.

The obligation to prevent paint, solvent, dust and wash water from escaping into drains, soil, waterways and air. It is met through containment, correct waste disposal, covers and controls on spraying and sanding.

Liquid waste generated by a trade that is not permitted to enter the stormwater system and may only enter sewer under an approved arrangement. Paint washings, solvent residues and sanding sludge need controlled disposal.

A lined or bunded area or vessel used to capture brush, roller and spray equipment cleaning water so it can be filtered, reused or disposed of correctly instead of reaching drains.

The skill of reading a safety data sheet to extract hazard classification, exposure limits, required PPE, storage conditions, spill procedures and first aid, then applying that information to the painting task at hand.

The two-way process of sharing information, listening to workers and involving them in decisions about safety, quality and work sequencing. On site it includes toolbox talks, briefings, signage and reporting channels.

A short, focused briefing held with the work crew before or during a shift to cover a specific hazard, task requirement or lesson learned. Attendance is recorded and questions are encouraged.

A project document defining the quality standards to be met, the inspection and test activities, acceptance criteria, hold points and who is responsible for verifying each stage of the painting work.

A schedule listing each inspection or test, the specification requirement, the method, the timing and the sign-off authority. It prevents work being covered up before it has been verified.

A stage in the work that cannot proceed until a nominated person has inspected and approved it. Painting examples include surface preparation sign-off and primer application before topcoats.

A record describing work or material that does not meet the specified requirement, its cause, the immediate containment and the corrective action taken. It supports rectification and prevents recurrence.

The process of correcting defective or non-compliant painting work so it meets the specification, such as sanding back, re-priming and recoating. It is documented and verified before final acceptance.

The surface that a coating is applied to, such as timber, masonry, concrete, plasterboard, metal or previously painted film. Its condition, porosity and moisture content govern coating selection and preparation.

The defined level of cleanliness and profile a substrate must reach before coating, such as removal of all loose material or a specified blast profile. It is agreed in the specification and verified before painting.

A preparation method that propels grit, sand or other media at a surface to remove scale, rust and old coatings and to create a profile for adhesion. It requires enclosure, respiratory protection and waste control.

The roughness or anchor pattern created on a substrate by preparation, measured as an average depth. Correct profile improves coating adhesion, while too little or too much affects performance.

The first coat applied to a prepared substrate, formulated to bond to the surface, inhibit corrosion or seal porosity, and provide a suitable base for subsequent coats. It is often the most critical coat for durability.

A coat applied to absorbent or porous surfaces to regulate suction and prevent uneven gloss or patchiness in later coats. It is chosen to suit the substrate and the coating system.

A coat applied over the primer to build film thickness, level minor irregularities and provide a uniform surface and colour for the topcoat. It is sanded before finishing.

The final coat or coats that provide the required colour, gloss, durability and resistance to weather, abrasion and cleaning. Its performance depends on correct preparation and compatible undercoats.

The specified combination of preparation, primer, intermediate and finish coats, each with a stated product, film thickness and drying time. The system is followed as a whole because performance depends on each layer.

The thickness of the cured coating measured on the surface, compared against the specification. It is checked with a gauge and recorded, because too thin a film reduces protection and too thick a film may crack.

The thickness of a coating measured immediately after application, before it dries. It is used to adjust application rate and to predict the resulting dry film thickness.

The interval after application during which the next coat may be applied without damaging the previous film. It depends on product, temperature, humidity and film thickness, and is taken from the manufacturer's data.

The working time a mixed two-pack or catalysed product remains usable after the components are combined. Exceeding it causes poor curing and adhesion, so mixing quantities are planned to match the task.

A product supplied as two components, usually a base and a hardener or catalyst, that must be mixed in the stated ratio and used within its pot life. It cures by chemical reaction rather than solvent evaporation.

The process of identifying why a finish has failed, such as blistering, sagging, wrinkling, poor adhesion or efflorescence, by examining the symptom, the substrate, the conditions and the application records, then specifying the remedy.

A white, powdery deposit of soluble salts drawn to the surface of masonry or concrete as moisture evaporates. It indicates moisture movement and must be treated at the source before recoating.

Measurement of the water present in a substrate, using a meter or hygrometer, before coatings are applied. Excess moisture causes blistering, poor adhesion and premature failure of the paint film.

The adjustment of fluid flow, air pressure and fan pattern on a spray gun to produce an even, correctly atomised coat. Correct setup reduces overspray, runs and material waste.

Paint particles that miss the intended surface and settle elsewhere as a dry mist. It is controlled by masking, screens, correct gun settings and suitable weather conditions.

The temporary covering of surfaces, fittings, glass and hardware not intended to receive paint, using tape, film and paper. It protects adjacent areas and produces clean edges.

The neat, controlled band of paint applied with a brush along edges, corners and junctions where a roller cannot reach, before the main area is rolled. It defines the finished edge.

The process of measuring areas and quantities from drawings and site inspection, then calculating material, labour and time requirements. Accurate take-off supports competitive quoting and realistic scheduling.

The area a given volume of coating will cover at a stated film thickness, usually expressed as square metres per litre. It is used to calculate material quantities and to price a job.

A documented change to the agreed scope, price or time of a contract, authorised before the work is carried out. Variations protect both parties by recording what changed and how it is valued.