5
23. The blocstop
™
BSO or BS/BSO secondary brake lo-
cated at the upper part of the unit is an
integral piece
of the tirak
™
hoist
. It is strictly forbidden to detach it
from the main body of the hoist for whatever reason.
Doing so would be a misuse creating an extreme
hazard and placing operators and by-standers in
danger of death resulting from the possible fall of the
suspended equipment: scaffold, workcage, bosun’s
chair or any other items or components.
24. Once the suspended scaffold, work-cage or bosun’s
chair has been lifted off its initial support (ground
or any other level), it is imperative not to release,
remove, alter or obstruct any part of the equipment
under load.
25. NEVER allow any condition which would result in a
suspension wire rope becoming SLACK during the
operation, unless …:
YOUR DUTY TO AVOID TAKING CHANCES
a) … the suspended scaffold, work-cage or bosun’s
chair is supported on a safe surface giving a safe
access to the operator in compliance with safety
regulations, or unless …
b) … another suspension wire rope has been safely
rigged to the suspended scaffold, workcage or
bosun’s chair.
26. Never operate the tirak
™
hoist and its accessories,
especially electric ones, in a potentially explosive
atmosphere.
27. For any job to be performed on the suspended
equipment, consider and control the speci
fi
c risks
related to the nature of the job.
28. Should you decide that the tirak
™
hoist is no longer
to be used, take precautions in disposing of it so that
it cannot be used any more.
AN ULTIMATE RECOMMENDATION
Never neglect means to improve safety. Due to the risks inherent in the use of suspended scaffold systems,
the supplier strongly recommends that every installation be equipped with secondary wire rope(s)
fi
tted with a
separate fall arrest system. Details about tirak
™
with blocstop
™
BS/BSO secondary brake on 2 wire rope sys-
tems at pages 21 to 34.
This manual is neither a regulations compliance manual nor a general training guide on suspended scaffold
operations. You must refer to proper instructions delivered by manufacturers of the other pieces of equipment
included in your suspended scaffold installation. Whenever calculations and speci
fi
c rigging and handling are
involved, the operator should be professionally trained to that end and secure relevant information prior to com-
mencing such work.
15. Training operators and riggers includes setting up
rescue procedure should a scaffold be brought to a
standstill during a job. Such procedure must be set up
by a competent person of the user, or of its technical
consultant, according to the working conditions, prior
to putting the equipment into operation.
16. Every suspended job must be placed under the
control of a person having the required competence
and the authority for checking that all the instructions
prescribed by this manual be regularly and ef
fi
ciently
carried out.
YOUR DUTY OF SAFETY BEYOND THE TIRAK
As being only one piece of the scaffold system, the tirak
™
hoist can contribute to the required
safety only, if
…:
21. … all the requirements in strength and resistance
are obtained with the necessary safety factor (see
regulations and professional standards);
22. … all the calculations, design and subsequent work
necessary to the above requirements have been
made by a competent person on the basis of proper
technical information regarding the site.
17. … it is
fi
tted on compatible scaffold equipment, includ-
ing the wire rope used in the tirak
™
hoist.
18. … other components meet the requirements of the
applicable safety regulations and are of the proper
quality, and assembled to form a safe suspended
scaffold system.
19. … every upper support of the scaffold is stable, suf-
fi
ciently strong and properly tied back to the structure,
according to the load either static or dynamic.
20. … supporting structure and tie-back provide the
requested resistance to every load to be applied,
either static or dynamic, during rigging or operating
the scaffold equipment;
