What are the general requirements for safe water jetting equipment?

All the components of a water jetting system must meet all the regulations of the country where they are being used. Moreover, in the whole of the European Union, the water jetting unit, the tools and the attachments must be accompanied by CE machine compliance certificates.

However, there are general requirements that all the water jetting systems have:

• The maximum permissible pressure limit of all the tools and attachments must be clearly indi­cated on the equipment.
• The manufacturer’s name or logo must appear on all the components in a clear and durable manner.
• The maximum permissible pressure limit of the tools and attachments must always be greater than or equal to:
  • The maximum operating pressure limit of the water jetting unit.
  • The maximum permissible pressure limit set on the sealed safety device.
• Attachments and jetting tools must be compatible with the system to which they are connected.
• All systems must be equipped with a device to prevent unintentional use.
• The pressurised water jetting system must be equipped with at least:
  • An emergency stop, which enables the shutdown of the assembly and the depressurisation of the water circuit.
• Two controls:
  • An instantaneous depressurisation control to be used by the supervisor.
  • A dead man control command to be used by the operator
• After activating the emergency stop, before the system can be restarted, it must be reset.
• The high-pressure water jetting system must be designed so that the opening or closing of one or more pieces of jetting equipment does not lead to an increase or decrease in the reaction force of other jetting equipment of more than 15%.
• In a working environment presenting specific risks, the high-pressure water jetting system and all its attachments must meet additional requirements that apply to these environments.

Links

• Table of contents of health and safety in water jetting

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