Pre-Procedure Checks
Components
Check that each bolt to be tensioned is visually free from obvious thread defects. Make sure that all hydraulic nuts are free to rotate on the bolts and can be wound flush up against the application face. Refer to the general arrangement drawing of your particular tensioner to confirm the correct level of the required bolt protrusion. Also, make sure that full thread engagement is available through the nut on the opposite end of the bolt being tensioned.
Check that all calculations pertaining to the tensioning procedure, including pressures, bolt loads, etc are available and have been reviewed by a qualified engineer with bolting experience.
Inspect the hose to make sure that no cracking, peeling or other damage has occurred to the polyamide material of the hose. Damaged hose must be replaced.
Pump
Make sure that personnel has fully read and understood the Product Instructions and Safety Information for the pump.
Make sure that the pump reservoir is filled with an adequate oil volume.
Make sure that the correct and preferred grade of oil is used in the pump.
Personnel
Make sure that all personnel are aware of the maximum working pressure and maximum piston stroke of the tensioners. These details are hard stamped on the tensioner body.
Always make sure that all personnel in the near vicinity are aware that pressurization of high pressure equipment is about to take place. Cordon off the working area and exclude anyone from the area who is not involved directly with the tensioning procedure.
Make sure that personnel are fully trained in stud bolt tensioning procedures and have fully read this guide and safety notes.
Bolting calculations must be done by qualified engineers who are properly trained or have suitable experience in bolting technology.
