High Pressure Water Jetting Course

Lesson 1 • Physics of High Pressure Water

Explains pressure, velocity, flow rate, and impact force relationships. Connects fluid dynamics theory to observable jetting outcomes in the field.

Lesson 2 • History and Industry Applications

Traces water jetting from early industrial use to modern applications across sectors. Provides context for why the technology is preferred over mechanical and chemical alternatives.

Lesson 3 • Overview of Jetting System Components

Introduces pumps, hoses, lances, nozzles, and control systems as an integrated unit. Builds a mental model students will expand in later equipment chapters.

Lesson 1 • Employer and Operator Duty of Care

Defines legal and ethical responsibilities of employers, supervisors, and operators. Links duty-of-care principles to risk assessment and safe system of work documentation.

Lesson 2 • Permits, Notices, and Site Authorization

Covers permit-to-work systems, confined space entry notices, and exclusion zone authorization. Ensures students can complete and verify required paperwork before work begins.

Lesson 3 • Regulatory Bodies and Governing Standards

Identifies the types of regulatory bodies that govern water jetting operations globally. Explains how industry associations translate regulations into operational codes of practice.

Lesson 4 • Incident Reporting and Investigation

Establishes procedures for reporting near-misses, injuries, and equipment failures. Connects accurate reporting to continuous safety improvement and regulatory compliance.

Lesson 1 • Head, Face, and Hearing Protection

Addresses helmet, visor, and hearing protection requirements for jetting environments. Connects noise exposure levels to mandatory hearing protection thresholds.

Lesson 2 • Ergonomics and Fatigue Management

Teaches correct body posture, grip technique, and work-rest cycles to reduce musculoskeletal strain. Links fatigue to increased error rates and injury risk.

Lesson 3 • Body Protection Selection and Standards

Covers rated water jetting suits, gloves, and footwear meeting recognized protection standards. Students match PPE ratings to pressure levels and task types.

Lesson 4 • Injection Injury Hazard Awareness

Explains the mechanism and severity of high-pressure injection injuries to skin and tissue. Establishes why standard PPE selection is critical and non-negotiable.

Lesson 1 • Hose Specifications and Pressure Ratings

Covers hose construction layers, working pressure, burst pressure, and minimum bend radius. Students identify correct hose grades for given operating pressures.

Lesson 2 • Equipment Pre-Use Inspection Procedures

Establishes a systematic inspection sequence for pumps, hoses, and fittings before each shift. Students complete an inspection checklist and make go/no-go decisions.

Lesson 3 • Fittings, Couplings, and Connections

Explains fitting types, thread standards, and torque requirements for leak-free high-pressure connections. Students assemble and disassemble connections using correct tools and procedures.

Lesson 4 • Pump Types and Operating Principles

Compares triplex plunger, intensifier, and rotary pump designs across pressure and flow applications. Students match pump type to task requirements based on output specifications.

Lesson 1 • Nozzle Geometry and Jet Characteristics

Explains orifice size, jet angle, and standoff distance effects on impact pressure and coverage. Students predict jet behavior changes when nozzle parameters are altered.

Lesson 2 • Automated and Semi-Automated Delivery Systems

Introduces rotary heads, pipe-cleaning tools, and track-mounted systems that reduce operator exposure. Students identify when automation improves safety and efficiency over manual operation.

Lesson 3 • Nozzle Types and Selection Criteria

Surveys fixed, rotating, oscillating, and specialty nozzles across cleaning and cutting applications. Students select nozzle type based on substrate, contamination, and pressure class.

Lesson 4 • Lance Design and Handling Techniques

Covers rigid and flexible lance types, extension lengths, and safe handling under reaction forces. Students practice controlled lance manipulation at simulated operating pressures.

Lesson 1 • Jetting Operation Control Techniques

Teaches trigger discipline, sweep patterns, and pressure adjustment for consistent, controlled jetting. Students apply techniques to achieve uniform surface treatment without substrate damage.

Lesson 2 • Shutdown, Depressurization, and Demobilization

Establishes the correct sequence for safe system shutdown, pressure bleed-off, and equipment removal. Students demonstrate full depressurization before any hose or fitting is disconnected.

Lesson 3 • Equipment Setup and Commissioning

Sequences pump priming, pressure testing, and system commissioning steps before live jetting begins. Students verify all safety devices are functional before authorizing operation.

Lesson 4 • Exclusion Zone Establishment

Defines exclusion zone dimensions based on pressure class, nozzle type, and site geometry. Students set up physical barriers and signage meeting regulatory minimum requirements.

Lesson 1 • Ultra-High-Pressure Cutting Operations

Introduces abrasive water jet and pure water cutting techniques for concrete, metal, and composite materials. Students apply enhanced safety controls required at ultra-high-pressure cutting ranges.

Lesson 2 • Surface Preparation and Coating Removal

Explains surface profile standards, contamination removal grades, and substrate protection during jetting. Students achieve specified cleanliness grades on steel and concrete substrates.

Lesson 3 • Pipe and Drain Cleaning Techniques

Covers nozzle selection, insertion technique, and blockage removal strategies for pipe and drain cleaning. Students select appropriate tools for pipe diameter, material, and blockage type.

Lesson 4 • Confined Space Jetting Operations

Addresses atmospheric testing, communication protocols, and rescue planning specific to confined space jetting. Students integrate confined space entry procedures with jetting operational controls.

Lesson 1 • Emergency Response Planning

Establishes site-specific emergency response plans covering communication, evacuation, and medical access. Students verify emergency plan elements are in place before operations begin.

Lesson 2 • Environmental Spill and Contamination Response

Addresses containment and reporting procedures when jetting wastewater or chemical residues escape the work area. Students deploy spill containment equipment and complete required notifications.

Lesson 3 • Post-Incident Review and Learning

Establishes a structured debrief process to extract lessons from incidents and near-misses. Students complete a post-incident review form and propose corrective actions.

Lesson 4 • Equipment Failure and Hose Burst Response

Covers immediate actions for hose burst, fitting failure, and pump runaway scenarios. Students practice emergency shutdown and personnel evacuation from the exclusion zone.