Section 20-8. High-pressure jetting of pipes When using a hose that is directly connected to a spray nozzle, the liquid pressure shall not be increased to working pressure before the jetting device has been inserted into the pipe or the operators are adequately protected by shields.
When using a hose that is directly connected to a spray nozzle, the liquid pressure shall not be increased to working pressure before the jetting device has been inserted into the pipe or the operators are adequately protected by shields.
