Air Blasting Course

Lesson 1 • Core Terminology and Units

Introduces standardised vocabulary used throughout the course, including pressure, flow, and profile measurements. Accurate terminology prevents misinterpretation of specifications and safety data.

Lesson 2 • Overview of the Blasting Process

Walks through a complete blasting cycle from setup to post-blast inspection. Provides a process map learners will reference as each stage is studied in depth.

Lesson 3 • What Is Air Blasting

Defines air blasting and distinguishes it from related surface treatment methods. Grounds learners in the physics of propulsion and impact before equipment details are introduced.

Lesson 1 • Blast Hoses, Couplings, and Nozzles

Details hose sizing, coupling standards, and nozzle geometry effects on blast pattern and velocity. Proper selection minimises pressure drop and maximises cleaning efficiency.

Lesson 2 • Blast Pots and Pressure Vessels

Explains pressure pot construction, metering valves, and fill procedures. Learners understand how media is introduced into the air stream at controlled rates.

Lesson 3 • Ancillary Equipment and Accessories

Covers remote controls, blast rooms, and automated blasting systems that extend manual capabilities. Learners recognise when ancillary equipment improves safety or productivity.

Lesson 4 • Blast Cabinets and Enclosed Systems

Introduces cabinet blasting for precision and small-part work, including glove-box and tumble cabinet designs. Enclosed systems require different media recovery and dust collection considerations.

Lesson 1 • Personal Protective Equipment for Blasting

Specifies PPE requirements for blast operators and nearby workers, including blast helmets, gloves, and hearing protection. PPE selection is tied to hazard level and task duration.

Lesson 2 • Environmental and Site Hazard Controls

Covers containment, waste management, and neighbour impact controls for outdoor and indoor blasting sites. Regulatory compliance for waste disposal is framed as a professional obligation.

Lesson 3 • Respiratory Hazards and Dust Control

Identifies silica, heavy metal, and coating dust hazards generated during blasting. Dust control hierarchy from engineering controls to respiratory protection is established here.

Lesson 4 • Incident Prevention and Emergency Response

Builds a proactive safety culture through hazard identification, near-miss reporting, and emergency drills. Learners develop site-specific emergency action plans.

Lesson 1 • Abrasive Media Classification

Categorises media into metallic, mineral, synthetic, and agricultural types with defining characteristics. Classification knowledge is the prerequisite for all media selection decisions.

Lesson 2 • Matching Media to Substrate and Finish

Provides a decision framework for pairing media with substrate hardness, geometry, and coating requirements. Mismatched media causes substrate damage or coating adhesion failure.

Lesson 3 • Media Size, Grade, and Mesh Standards

Explains mesh sizing systems and how grit size affects surface profile depth and cleaning speed. Correct sizing prevents over-profiling or insufficient anchor pattern.

Lesson 1 • Post-Blast Inspection and Acceptance

Defines the complete post-blast inspection sequence and acceptance criteria before coating application. Learners produce inspection records that satisfy client and regulatory requirements.

Lesson 2 • Surface Profile Measurement

Teaches measurement of anchor pattern depth using replica tape, dial gauges, and digital profilometers. Accurate profile data ensures coating adhesion specifications are met.

Lesson 3 • Pre-Blast Surface Condition Assessment

Establishes the inspection workflow before blasting begins, including mill scale, pitting, and weld spatter evaluation. Pre-blast findings drive media and parameter selection.

Lesson 4 • Surface Cleanliness Grade Standards

Introduces visual cleanliness standards used globally to define acceptable blast results. Learners interpret grade descriptions and photographic reference comparators accurately.

Lesson 1 • Pressure, Flow, and Velocity Relationships

Explains how nozzle pressure, air volume, and media flow rate interact to determine blast energy. Learners calculate and set parameters to hit target profile and production rate.

Lesson 2 • Process Monitoring and Adjustment

Covers real-time monitoring of pressure, media condition, and surface results during blasting. Learners apply a structured adjustment process when results deviate from specification.

Lesson 3 • Standoff Distance and Blast Angle

Quantifies the effect of nozzle-to-surface distance and impingement angle on cleaning efficiency and profile. Learners practise adjusting technique to maintain consistent results.

Lesson 4 • Troubleshooting Common Process Problems

Provides a diagnostic framework for resolving frequent issues such as moisture contamination, nozzle wear, and inconsistent profile. Systematic troubleshooting reduces rework and downtime.

Lesson 1 • Blasting Coated and Contaminated Surfaces

Addresses removal of lead paint, coatings, and chemical contaminants with appropriate containment and PPE. Learners apply hazardous material protocols before and during removal.

Lesson 2 • Automated and Robotic Blasting Systems

Introduces programmable blast systems used for high-volume or hazardous applications where manual blasting is impractical. Learners understand programming basics and quality verification roles.

Lesson 3 • Wet Abrasive and Vapour Blasting

Introduces water-injection and slurry blasting methods that suppress dust and reduce substrate heat. Learners compare wet and dry methods to select the appropriate approach.

Lesson 4 • Blasting in Confined Spaces

Addresses the unique hazards and procedural requirements for blasting inside tanks, vessels, and enclosed structures. Confined space entry permits and atmospheric monitoring are mandatory prerequisites.

Lesson 1 • Continuous Improvement in Blasting Operations

Applies root cause analysis and performance metrics to drive ongoing improvement in quality and productivity. Learners use data from completed projects to refine future planning.

Lesson 2 • Resource and Equipment Planning

Covers workforce sizing, equipment selection, and consumable estimation for a blasting project. Accurate resource planning prevents delays and budget overruns.

Lesson 3 • Inspection and Test Plans

Guides learners in developing inspection and test plans that define hold points, witness points, and acceptance criteria. ITPs are the backbone of quality assurance on blasting projects.

Lesson 4 • Documentation and Record Keeping

Establishes requirements for blast logs, inspection reports, and material traceability records. Complete documentation protects contractors and satisfies audit requirements.