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BOLTING & FASTENINGS FEATURE SPONSOR


DESIGNED TO SAVE TIME AND MONEY


The latest feature from Plarad is optimised quality control for large bolted joints that allows users to use microprocessor control and documentation to work with greater safety.


REDUCED COSTS AND VALUABLE TIME SAVINGS


The hydraulic tensioner power pack means reduced costs and valuable time savings. As well as being the most reliable and safest hydraulic power pack in its class, TAX is also the lightest device of its kind.


A supervisor uses software on a PC to define the pressure and the resulting pre- tensioning force with which each bolt will be tightened. The end user of the TAX will not be able to alter these programmes in any way. The TAX, thereby, ensures that all bolted joints will be subjected to precisely the same preset tensioning force.


SYNCHRONISING BOLTING APPLICATIONS


The control unit can be used for more than just setting parameters for bolting applications. When the supervisor connects the control unit to the PC after all bolting operations are complete, the software will immediately sync the standardised data of all automatically captured tensioning processes and save it to a database. “This is a decisive factor in quality control,” the Head of Development continues to explain.


This saves time during transport and bolting. The reduced weight helps the technician who has to carry the tensioners while climbing up more than 100 metres before he can tension bolted joints in rotor blades or hard-to-reach flanged connections found in chemical plants. Another time-saving factor is the safe and faultless software assisted installation process. Finally, the TAX provides standardised documentation to assure quality.


With the new TAX, Plarad managed to shave a handsome 45 per cent off the weight of their tried and tested high- pressure tensioner power packs. This lightens the operators burden by no less than 22 kilogrammes. More importantly, it lets the worker operate in greater comfort as the unit helps him save time and conserve his strength.


INDICATOR FOR PERFECT SEATING Plarad equips their tensioners with a patent-pending depth indicator device including measuring gauge. “We incorporate an indicator in every single one of our tensioners, indicating to the workman when the draw nut is seated perfectly,” explains their Head of Development. “When you are dealing with pressures of up to 2,400 bar, you need to keep the risk from improper handling at a minimum. Our solution tells the user immediately when the draw nut is seated perfectly on the bolt, indicating the time when he can switch on the pump and build up pressure.”


PRESET BOLTING PROGRAMMES ENSURE CORRECT WORKFLOWS Minimising errors, including errors on the software side, is important in order to prevent the workman from inadvertently applying the wrong amount of pressure to the tensioner, thus damaging the bolt or not pre-tensioning it firmly enough, the control unit on the TAX can be programmed with the corresponding settings prior to each and every installation process.


“The data allows the supervisor to prove that all bolted joints were tensioned in compliance with regulations. This is an aspect that is becoming increasingly important for the construction of wind power plants as it has become a requirement for obtaining certification from the Technical Control Board (TÜV) or German Lloyd.”


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www.windenergynetwork.co.uk


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