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Water Jetting Courses

All of our water jetting courses are Water Jetting Association approved and upon successful completion of the course the delegates will be issued with a certificate and photo ID card (if applicable). For all day courses the delegates will be provided with refreshments throughout the day and a meal at lunchtime. All candidates wishing to take sit a water jetting course should be a minimum of 16 years old and be medically fit.

The safety awareness certificate should be the first course to be sat, upon successful completion of the safety awareness course there are a number of practical courses which can then be sat. All courses are only valid when the certificate holder holds a current safety awareness certificate. The safety awareness certificate is valid for three years after successful completion of the course before it needs to be re-taken. The other qualifications do not expire but are only valid when used with a valid safety awareness certificate.

Qualification Title

Duration

WJA Safety Awareness Training Course

One Day

Who should attend?
Anybody wishing to work in the water jetting industry.

What will be covered?

  • Applications – cleaning & surface preparation (surfaces, drains & sewers, pipes and tubes), Jet cutting (precision and volume removal), Effect of varying pressure / flow at the nozzle, Range of jetting machines, configurations & categories (pressure washers, general purpose, medium-heavy duty, UHP, drain & sewer jetters).
  • Legislation & the WJA codes of practice
  • Jetting Equipment: Nozzles – Jet principles (purpose of nozzles, power of water jet, jet pressure/flow characteristics, jet reaction force), Types of nozzle (forward facing, fixed & spinning jets, multi-jet fixed & jet spinning nozzles).
  • Jetting Equipment: Pumps – Pump configuration, standard piston-plunger pump, positive displacement action, operating features, effects of blockages, and variation of plunger sizes. Other pump configurations, diaphragm and intensifier types. Drive arrangements, engine / electric motor, hazardous area equipment, water supply/delivery features (filtration requirements, boost feed pumps, pulsation dampeners, jump-jet), pressure safety relief options (relief valve/bursting disc), pressure gauge features.
  • Jetting Equipment: Pressure controls – Dump & dry shut controls, fail safe / selector versions, direct manual operation / remote operation via electric-pneumatic-hydraulic controls, automatic unloader valve for dry shut, pressure regulators, automatic off load engine speed control systems.
  • Jetting Equipment: High pressure hose – Hose construction & pressure ratings, external & internal damage possibilities, hazards arising from damaged hose, inspection requirements, hose end fittings (construction, assembly and testing), connectors & hose end couplings (types and features), bore size and flow rates, hose for general / high flow / small bore tube & pipe cleaning. Pressure drop due to flow though hose & lances - effect on pressure available at the nozzle.
  • Water jetting hazards
  • Water jetting injuries
  • Personal protective equipment
  • Operational procedures

Qualification Title

Duration

WJA Drain and Sewer Cleaning Course

One Day

Who should attend?
Anybody who has successfully completed the safety awareness course.

What will be covered?

  • Review key safety awareness issues
  • Applications & machines – scope of drain & sewer cleaning applications, other pipeline systems. Range of cleaning requirements & standards. Range of jetting machines suitable for drain & sewer cleaning.
  • Jetting equipment – Nozzles & ancillaries – review nozzle principles (fixed jet nozzles, rotating nozzles, life & wear characteristics, driven rotating nozzles & associated ancillary equipment).
  • Jetting equipment – High pressure hose – Hose used in drain & sewer applications, damage & wear possibilities, hose ancillaries. Bore size & flow capabilities.
  • Jetting equipment – Machines – Range of jetting machines used, engine controls & instruments. Pump pressure controls, review dump/dry shut & selector / fail safe types, pressure safety relief. Water supply/delivery features – filtration requirements, boost feed pumps, built-in anti-freeze provisions.
  • Job assessment & planning – Information & assessments – site location, access to & layout of pipeline; construction material & nature of contaminants – initial condition and require finished condition; water provision, waste disposal, hazards. Selection of equipment & manning levels – jetting machine / nozzles / accessories, number & duties of operators, single person operation. Determine job method, based on safe system of work.
  • Operational procedures – Daily checks – manufacturer’s instructions, other items requiring regular checks. Setting-up – permits / authorisations, barriers & warning signs, positioning of machine & equipment, team duties & signals, flushing, leaks check, preparation for entry of nozzle. Nozzle entry & advance into pipe; control & monitoring during cleaning, debris extraction, standard of finish. Release of hose if trapped by debris; removal of nozzle on completion. Job completion – client inspection, waste removal, equipment decontamination, return site to safe condition.
  • Practical – Jetting machine & equipment – review features, and demonstrate daily checks, start / run / stop. Job assessment – review & discuss, site location & constraints, accessibility, pipeline layout & features. Pipe construction, nature of contamination, required finishing condition. Water supply, effluent drainage & waste disposal. Hazards & use of PPE. Discussion of options, agree job method. Site preparation – setting up work area. Team talk – review job method, signal, set up team(s). Position jetting machine, layout & check equipment. Demonstrate all procedures to full group. For all teams, instruct each operator in each duty. Trainees carry out exercise, each team following instructions to set up, flush, check for leaks, prep for nozzle entry, proceed with operation. Rotate team members through duties. Review at each rotation and final review. Disconnect equipment & cleat site.

Qualification Title

Duration

WJA Surface Cleaning and Preparation Course

One Day

Who should attend?
Anybody who has successfully completed the safety awareness course.

What will be covered?

  • Review key safety awareness issues
  • Applications & machines – Scope of surface cleaning & preparation applications. Range of tasks, and differentiation between surface cleaning & surface preparation. Range of jetting machines suitable for surface cleaning / preparation.
  • Jetting equipment – Nozzles & ancillaries – Review nozzle principles – fixed jet nozzles, rotating nozzles, life & wear characteristics, associated ancillary equipment including automatic, semi-automatic, & wet abrasive blasting.
  • Jetting equipment – High pressure hose – Hose used in surface cleaning & preparation applications, damage & wear possibilities; hose ancillaries. Review bore size & flow ratings.
  • Jetting equipment – Machines – Range of jetting machines used. Engine controls & instruments. Pump pressure controls, review dump/dry shut & selector / fail safe types, auto engine speed control systems, pressure safety relief. Water supply/delivery features – filtration requirements, boost feed pumps, built-in anti freeze provisions.
  • Job assessment & planning – Information & assessment – site location, access to work area, surface to be cleaned & layout; base material & contaminants – initial condition and required finished condition; water provision, waste disposal, hazards. Selection of equipment & manning levels – jetting machine / nozzles / accessories, number & duties of operators ,single person operation. Determine job method, based on safe system of work.
  • Operational procedures – Daily checks – manufacturer’s instructions, other items requiring regular checks. Setting-up – permits / authorisations, barriers & warning signs, positioning of machine & equipment, team duties & signals, flushing, leaks check, trial run. Monitoring of operation – flying debris, waste contamination, work standard. Job completion – client inspection, waste removal, equipment decontamination, return site to safe condition.
  • Practical – Jetting machine & equipment – review features, and demonstrate daily checks, start / run / stop. Job assessment – review & discuss, site location & constraints, accessibility, screening / extraction requirements. Work surface – nature of contamination, work to be varied out & standard of finish. Water supply, effluent drainage. Hazards & use of PPE. Discussion of options, agree job method. Site preparation – setting up work area. Team talk – review job method, signal, set up team(s). Position jetting machine, layout & check equipment. Demonstrate all procedures to full group. For all teams, instruct each operator in each duty. Trainees carry out exercise, each team following instructions to set up, flush, check for leaks, carry out trial run, proceed with operation. Rotate team members through duties. Review at each rotation and final review. Disconnect equipment & clear site.

Qualification Title

Duration

WJA Tube and Pipe Cleaning Course

One Day

Who should attend?
Anybody who has successfully completed the safety awareness course.

What will be covered?

  • Review key safety awareness issues
  • Applications & machines – Nozzles & jets, pumps & ancillaries, pressure controls, high pressure hose, hazards & injuries, personal protective equipment, operational procedures.
  • Jetting equipment – Nozzles & ancillaries – Review nozzle principles – fixed jet nozzles, rotating nozzles, life & wear characteristics, associated ancillary equipment including automatic, semi-automatic.
  • Jetting equipment – High pressure hose – Hose used in tube & pipe cleaning applications, including flexi & semi-rigid lances; damage & wear possibilities; hose ancillaries. Bore size and flow capabilities, in particular for flexi & semi-rigid lances.
  • Jetting equipment – Machines – Range of jetting machines used, engine controls & instruments. Pump pressure controls, review dump/dry shut & selector / fail safe types, auto engine speed control systems, pressure safety relief. Water supply/delivery features – filtration requirements, boost feed pumps, built-in anti freeze provisions.
  • Job assessment & planning – Information & assessment – site location, access to & layout of tube bundle / pipeline; base material & nature of contaminants – initial condition and required finish condition; water provision, waste disposal, hazards. Selection of equipment & manning levels – jetting machines / nozzles / accessories, number & duties of operators, single person operation. Determine job method, based on safe system of work.
  • Operational procedures – Daily checks – manufacturer’s instructions, other items requiring regular checks. Setting-up – permits / authorisations, barriers & warning signs, positioning of machine & equipment, team duties & signals, flushing, leak check, tube preparation for entry. Nozzle entry & removal, control & monitoring during cleaning – debris, waste containment, standard of finish. Job completion – Client inspection, waste removal, equipment decontamination, return site to safe condition.
  • Practical – Jetting machine & equipment – review features, and demonstrate daily checks, start / run / stop. Job assessment – review & discuss, site location & constraints, accessibility, screening requirements. Tube type & material – nature of contamination, standard of finish required. Water supply, effluent drainage. Hazards & use of PPE. Discussion of options, agree job method. Site preparation – setting up work area. Team talk – review job method, signal, set up team(s). Position jetting machine, layout & check equipment. Demonstrate all procedures to full group. For all teams, instruct each operator in each duty. Trainees carry out exercise, each team following instructions to set up, flush, check for leaks, prep for nozzle entry, proceed with operation. Rotate team members through duties. Review at each rotation and final review. Disconnect equipment & clear site.

Qualification Title

Duration

WJA Cutting and Breaking Course

One Day

Who should attend?
Anybody who has successfully completed the safety awareness course.

What will be covered?

  • Review key safety awareness issues – Nozzles & Jets, pumps and ancillaries, pressure controls, high pressure hose, hazards & injuries, personal protective equipment, operational procedures.
  • Applications & machines – Scope of cutting & breaking applications, including both onsite and manufacturing processes. Range of, and differentiation between cutting / breaking tasks. Range of jetting machines suitable for cutting / breaking.
  • Jetting equipment – Nozzles & ancillaries – Review nozzle principles – fixed jet nozzles, abrasive cutting nozzles, nozzle life & wear characteristics, associated ancillary equipment including automatic, semi-automatic.
  • Jetting equipment – High pressure hose – Hose used in cutting & breaking applications, damage & wear possibilities; hose ancillaries. Review bore size & flow ratings.
  • Jetting equipment – Machines – Range of jetting machines used, engine controls & instruments. Pump pressure controls, review dump/dry shut & selector / fail safe types, auto engine speed control systems, pressure safety relief. Water supply/delivery features – filtration requirements, boost feed pumps, built-in anti freeze provisions.
  • Job assessment & planning – Information & assessment – site location, access to work area & layout, material to be cut/removed, work piece & task features, water provision, waste disposal, hazards. Selection of equipment & manning levels – jetting machines / nozzles / accessories, number & duties of operators, single person operation. Determine job method, based on safe system of work.
  • Operational procedures – Daily checks – manufacturer’s instructions, other items requiring regular checks. Setting-up – permits / authorisations, barriers & warning signs, positioning of machine & equipment, team duties & signals, flushing, leaks check, trial run. Monitoring of operation – flying debris, waste contamination, return site to safe condition.
  • Practical – Jetting machine & equipment – review features, and demonstrate daily checks, start / run / stop. Job assessment – review & discuss, site location & constraints, accessibility, screening / extraction requirements. Work piece – nature of material & work to be carried out. Water supply, effluent drainage. Hazards & use of PPE. Discussion of options, agree job method. Site preparation – setting up work area. Team talk – review job method, signal, set up team(s). Position jetting machine, layout & check equipment. Demonstrate all procedures to full group. For all teams, instruct each operator in each duty. Trainees carry out exercise, each team following instructions to set up, flush, check for leaks, carry out trial run, proceed with operation. Rotate team members through duties. Review at each rotation and final review. Disconnect equipment & clear site.

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