This practice is intended to provide guidance on the proper operation of pressure water-jet cleaning and cutting equipment.

This practice is also applicable at lower pressures where there is foreseeable risk of injury.

This practice is provided to assist persons unfamiliar with the operation of water-jet cleaning and cutting equipment in learning to correctly use the equipment.

Correct operation and use of the pressure water-jet cleaning and cutting equipment is the responsibility of the operator and employer. After the operator has familiarized himself with the identification of pressure metal fittings, hoses, guns, and accessories in accordance with the original equipment manufacturer's specifications, instructions, and programmed instructional material, hydrojetting may begin. Modification of water-jetting equipment shall not be done without prior written approval by the manufacturer of the equipment. Employees shall be instructed in the recognition and avoidance of unsafe conditions.

Note 2—Warning: Serious harm or injury may result from the misuse of water-jetting equipment and the use of improper fittings, hoses, or attachments.

The use of pressure water-jet equipment for cutting and cleaning is a rapidly evolving technology. This practice will be periodically reviewed for any required changes at least every five years.

1.1 This practice covers the personnel requirements, operator training, operating procedures, and recommended equipment performance/design for the proper operation of all types of pressure water-jet cleaning and cutting equipment as normally used by industries concerned with construction, maintenance, repair, cleaning, cutting, and demolition work.

1.2 The term high-pressure water jetting covers all water jetting, including the use of additives or abrasives at pressures above 100.5 psig (0.69 MPa).

1.3 Any person required to operate or maintain pressure water-jetting equipment shall have been trained and have demonstrated the ability and knowledge to do so in accordance with the original equipment manufacturer's instructions, specifications, and training programs.

1.4 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Notes 1-8 and Sections 8 and 11 for specific hazards statements.