High Pressure Jetting Team: Organisation and Duties
Supervisor
The operation must be under the direct supervision of a competent and qualified Supervisor responsible for assessing the particular hazards at the site leading to a safe system of work and which could include e.g. Method Statements and Task Risk Assessments.
The Supervisor is also responsible for ensuring that any Statutory requirements are identified on the permit and for verifying compliance with the control measures. (see 3, 3.2 and 4.0)
Team Leader
The Team Leader must have successfully completed the training requirements (see 3.2) and obtained the practical experience required (see 4.0).
Responsibilities include:
Selecting suitable equipment and completing all the checks detailed in the Daily Safety Checklist (see Appendix 1)
Ensuring compliance with any requirements of the Job Permit or other site specific documentation.
Conducting a team talk prior to starting the task.
Ensuring that all team members clearly understand the means of communication and any signals to be used.
Ensuring that operatives are rotated in their duties to minimise fatigue and assist in gaining experience.
The Team Leader must be able to fill any of the positions described below.
Lead Operator
The Lead Operator is usually the person immediately in control of the Jetting Gun, Lance plus Foot Control Valve, or Drain Cleaning Hose.
It is the responsibility of the Lead Operator to signal to the Machine Operator when it is safe to bring the system up to full power.
However, if the operation requires a separate Foot Control Valve Operator, because the Lead Operator is unable to operate both the Foot Control Valve and control the lance, the Lead Operator must signal to the Foot Control Operator when it is safe to bring the system up to full power.
Machine Operator
The Machine Operator is responsible for operating the High Pressure Jetting Unit.
In a two-man team the Machine Operator will also be responsible for the Safety Standby duties.
Special Equipment is available for "One Man or Single Person Operation". This must be used strictly in accordance with the manufacturers instructions. (see section 7.8)
Foot Control Valve Operator
The Foot Control Valve Operator is responsible for operating the Foot Control Valve on instructions from The Lead Operator.
The Foot Control Valve Operator must have uninterrupted sight and/or communication with the Lead Operator at all times.
Safety Standby - The duties of the Safety Standby include:
Controlling the entry of people into the prohibited area. In the event of unauthorised entry into the 'Prohibited Area' (see Section 8) the pressure must be shut off safely and immediately.
Warning the team of the development of any unsafe situation.
Ensuring equipment is shutdown in an emergency or in the event of unauthorised entry into the work area.
If a two man team is working, the Machine Operator will undertake the duties of the Safety Standby.
If the team consists of more than two men the Safety Standby must not be assigned any other duties.
Additional Operators
Additional operators may be required when Lance work is under way to support the lance and assist in controlling reaction forces.
They may also be required to assist with handling long hose lengths and in situations where communication between team members is difficult, e.g. acting as a 'look out' in order to keep members of the public away from the Jetting area.
Wherever practicable remote shut off devices should be used in preference to multiple 'line of sight' operations.
Single Person Operation ("One Man" Operation)
This is any jetting operation utilising only one person to control both the jetting and the Pump Unit.
Single Person Operation is permissible in circumstances where, having undertaken a full assessment of all risks it can be clearly demonstrated that there is no increase of risk to the operator and third parties.
Adequate barriers should be provided to prevent persons from entering the work area.
The operator shall be fully familiar with the equipment to be used.
An adequate remote control system with fail-safe provision shall be used to control both the pump unit and the jetting operation during all Single Person Operation.