The WJA Approved Tube and Pipe Cleaning Course equips operatives with the essential knowledge and practical skills to safely and efficiently carry out tube and pipe cleaning using high-pressure water jetting equipment, covering the removal of blockages, scale and debris across a range of applications.
This course is designed for operatives involved in tube and pipe cleaning using high-pressure water jetting equipment, who require a clear understanding of the risks, correct techniques, and the safe use of pressures, nozzles and accessories to remove blockages, scale and debris effectively and efficiently.
Yes. Participants must hold a current, valid WJA Safety Awareness Photocard before attending this course, which is required to validate all WJA training and certification.
This course is delivered in two parts, combining classroom-based theory with practical, hands-on training. The theory session covers common tube and pipe cleaning challenges, safe working methods, equipment selection, pressures, nozzles and accessories, and is concluded with a 20-question assessment with a pass mark of 80%. Participants then complete a practical session to demonstrate competence in tube and pipe cleaning, with successful completion of both elements required to pass the course.
Once the course has been successfully completed, participants will be issued with a WJA Tube and Pipe Cleaning Photocard and granted access to the WJA App, both issued by the Water Jetting Association (WJA). The photocard confirms the holder’s competence in tube and pipe cleaning and remains valid indefinitely, provided a current, valid WJA Safety Awareness Photocard is maintained at all times.
In place of a physical certificate, successful candidates receive digital access to their certification via the WJA App, allowing them to view a digital version of their photo ID card and training record. This approach reduces the need for paper documentation and supports the WJA’s commitment to a more sustainable, efficient and modern system for managing water jetting credentials.
(included only when presented as a ‘Stand-Alone’ Course)
Nozzles and Jets, Pumps and Ancillaries, Pressure Controls, High Pressure Hose, Hazards and Injuries, Personal Protective Equipment, Operational Procedures.
Scope of tube and pipe cleaning applications differentiate between tubes and pipes. Range of cleaning requirements and standards. Range of Jetting Machines suitable for tube and pipe cleaning.
Review nozzle principles – fixed jet nozzles, rotating nozzles, life and wear characteristics, associated ancillary equipment including automatic, semi-automatic.
Hose used in tube and pipe cleaning applications, including flexi and semi-rigid lances; damage and wear possibilities; hose ancillaries. Bore size and flow capabilities, in particular for flexi and semi-rigid lances.
Range of jetting machines used, engine controls and instruments. Pump pressure controls, review dump/dry shut and 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.
Information and assessment – site location, access to and layout of tube bundle/pipeline; base material and nature of contaminants – initial condition and required finished condition; water provision, waste disposal, hazards. Selection of equipment and manning levels – jetting machine/nozzles/accessories, number and duties of operators, single person operation. Determine job method, based on safe system of work.
Daily checks – manufacturer’s instructions, other items requiring regular checks. Setting-up – permits/authorisations, barriers and warning signs, positioning of machine and equipment, team duties and signals, flushing, leaks check, tube preparation for entry. Nozzle entry and removal, control and monitoring during cleaning – debris, waste containment, standard of finish. Job completion – client inspection, waste removal, equipment decontamination, return site to safe condition.
Jetting machine and equipment – review features, and demonstrate daily checks, start/run/stop. Job assessment – review and discuss, site location and constraints, accessibility, screening requirements. Tube type and material – nature of contamination, standard of finish required. Water supply, effluent drainage. Hazards and use of PPE. Discussion of options and agree job method. Site preparation – setting up work area. Team talk – review job method, signal, set up team(s). Position jetting machine, layout and 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 and clear site.
Review of course content as above, with opportunity for any further discussion before Questionnaire.
