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MSMWJ202 Current

Application

This unit describes the skills and knowledge required to use high pressure water jetting equipment under the supervision of a competent operator. The job may be to clean, prepare, abrade, cut or demolish concrete, steel or other plant, equipment, vessels or infrastructure.
This work is undertaken using equipment that meets the requirements of a Class B system as defined byAS 4233.1 High pressure water jetting systems – Part 1: Safe operation and maintenanceand in compliance withSafe Work Australia Guide for Managing Risks from High Pressure Water Jetting, its state/territory equivalent (where one exists) or the authorised replacement.
The worksite may be a client’s site or a site belonging to the organisation.
This unit reflects the skills of an operator working under supervision. For a competent operator who is able to operate autonomouslyMSMWJ304Operate a high pressure water jetting systemshould be used.
No licensing or certification requirements exist at the time of publication. Relevant legislation, industry standards and codes of practice within Australia, including requirements for refresher training, must be applied.

What You'll Learn

1.

  • 1.1 Review required job details as part of team
  • 1.3 Identify site hazards and required hazard controls
  • 1.4 Select, check, load and prepare required equipment under supervision
  • 1.5 Participate in toolbox meeting or similar
  • 1.6 Complete pre-work documentation to job requirements

2.

  • 2.1 Confirm correct equipment is at job or site location
  • 2.3 Communicate with site authorities and obtain correct work permits as directed
  • 2.4 Read, interpret and follow job-related documentation as directed
  • 2.5 Check that required quantity and quality of water is available
  • 2.6 Check available waste disposal is adequate for all waste generated by job
  • 2.7 Report any deviations from requirements to supervisor
  • 2.8 Recognise and control job and site-specific hazards

3.

  • 3.1 Prepare worksite to comply with job, safety and environmental requirements
  • 3.3 Communicate with other work groups as appropriate to ensure safe and efficient operation
  • 3.4 Establish appropriate means of communication between operators
  • 3.5 Ensure hazard controls and personal protective equipment (PPE) are operational and adequate
  • 3.6 Test emergency shut-off and report need for repair if not functional

4.

  • 4.1 Start up high pressure water jetting equipment as directed
  • 4.3 Operate equipment as directed
  • 4.4 Monitor hazards and activate emergency stop as required
  • 4.5 Monitor job, conditions and equipment and maintain agreed real-time visual and verbal communication
  • 4.6 Recognise problems and resolve routine problems

5.

  • 5.1 Shut down high pressure water jetting equipment as directed
  • 5.3 Clean job site and equipment and ensure appropriate disposal of all waste
  • 5.4 Complete routine equipment servicing and store items in appropriate location
  • 5.5 Identify and action restock requirements for spares and consumables
  • 5.6 Participate in debrief
  • 5.7 Complete documentation to job requirements

Assessment Requirements

Performance Evidence

There must be evidence the candidate has completed the tasks outlined in the elements and performance criteria of this unit, and demonstrated the ability to:
• assemble and operate, under supervision, equipment that meets the requirements of a Class B system as defined by AS 4233.1 High pressure water jetting systems – Part 1: Safe operation and maintenance , to complete:
• at least one gun operation AND
• at least one of the following:
• pipe cleaning (not stormwater/sewerage system)
• heat exchanger/tube cleaning
• surface preparation
• vessel (interior) cleaning using a cleaning head.

Knowledge Evidence

There must be evidence the candidate has knowledge of:
• existence and purpose of AS 4233.1 High pressure water jetting systems – Part 1: Safe operation and maintenance and Safe Work Australia Guide for Managing Risks from High Pressure Water Jetting
• system controls required by AS 4233.1 High pressure water jetting systems – Part 1: Safe operation and maintenance and Safe Work Australia Guide for Managing Risks from High Pressure Water Jetting
• possible injuries resulting from high pressure water jetting activities and appropriate responses to injuries
• hazards specific to the operation of water jetting equipment, including:
• physical hazards,
• stored energy hazards
• working environment hazards
• environmental protection considerations for water jetting operations
• basic principles of how high pressure water jetting equipment works, including:
• pump
• motive power
• hoses and hose restraints
• guns, foot control devices, lances and nozzles
• preoperational checks and set-up procedures
• other equipment, plant, tools and hazard control devices required for water jetting jobs
• basic aspects of reaction force and its determination
• communication systems used between operators, including hand signals
• how to recognise water jetting problems and appropriate corrective action for routine problems
• situations requiring activation of emergency stop
• types of waste generated and procedures for safe disposal
• routine cleaning and servicing requirements for water jetting equipment.

Assessment Conditions

Skills must have been demonstrated in the workplace or in a simulated environment that reflects workplace conditions and contingencies.
The following conditions must be met for this unit:
• use of suitable facilities, equipment and resources, including:
• high pressure water jetting system and other tools and materials to complete tasks specified in the performance evidence
• safety and personal protective equipment (PPE)
• job documentation.
Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.

Foundation Skills

  • {'skill': 'Foundation Skills', 'description': 'This section describes those language, literacy, numeracy and employment skills that are essential to performance.\nFoundation skills essential to performance are explicit in the performance criteria of this unit of competency.'}

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Last updated from training.gov.au: 07 April 2026