Lifting Equipment, Tensioning Devices and Ground Anchors Flashcards
What are the three variations of Tirfors that CITs utilise?
- TU 8
- TU 16
- TU 32H (Hydraulic)
What checks are conducted on both Tirfors and associated ropes?
- Pre-Use
- After Use
- 6 Monthly Inspection for Tirfor Maxiflex ropes.
- 12 Monthly Inspection for Tirfor Winch.
What is the WLL for a TU16 Tirfor Winch?
- TU 8 (0.8t)
- TU 16 (1.6t)
- TU 32H (3.2t)
What is the name of the Steel Wire Rope used in conjunction with Tirfor Winches?
TIRFOR® wire rope
Maxiflex Steel Wire Ropes
How are these ropes identified?
TIRFOR® wire ropes have a red strand which is visible on new rope.
Name four defects associated with steel wire rope?
- Fraying
- Bulging
- Flatting
- ## Cuts
Name five precautions reading the sue of Tirfor Winches?
- Never attempt to motorise the models of TIRFOR® machines.
- TIRFOR® machines must not be used beyond their maximum working load.
- TIRFOR® machines must not be used for applications other than those for which they are intended.
- Never attempt to operate the rope release mechanism whilst the machine is under load.
- Never obstruct the operating levers or the rope release lever.
- Never operate the forward and reverse operating levers at the same time.
- Never use a handle, other than the telescopic operating handle supplied, to operate the TIRFOR® machine.
- It is forbidden to replace sheared pins by anything other than genuine TIRFOR® shear pins of the same model.
- Never anchor the machine other than by its appropriate anchor point.
- Never obstruct the machine, which could prevent the machine, the wire rope and the anchor points from operating in a straight line.
- Never use the TIRFOR® wire rope as a sling. – Never apply a load to the loose wire rope exiting from the anchor point of the TIRFOR® machine.
- Never subject the controls to sharp knocks.
- Never attempt to reverse the rope completely through the machine whilst under load.
- Do not operate the TIRFOR® machine when the rope ferrule gets to within 10 cm of the machine. Otherwise the ferrule is likely to foul the casing and push the rope guide inside the machine.
What safety feature is integrated within the forward operating lever on a Tirfor?
Shear Pins
Name three types of tensioning devices?
- Turnbuckle
- Rigging Screw
- Bottle Screw
Upon installation of tensioning devices, how is the device protected against slackening and inclement weather?
Locking Wire & Densopol Tape.
Name the three types of Ground Anchors used within the CIT trade?
- Type 11 Pickets
- Hold Fasts
- Molex
At what angle is a Hold Fast ground anchor to be installed?
Needs to be dug into the ground and installed at 45 degrees.
True or False, Ground Anchors provide a stable WLL irrespective of ground conditions?
False - WLL vary depending on the size of the Ground Anchor and more importantly, the ground conditions.
Prior to the installation of ground anchor systems, what is required to have been completed?
Prior to the installation of any type of Ground Anchor, a GROUND SCAN should be conducted to ensure no local services are within the work area.
Under no circumstances should the Ground Scan be omitted.
When installing pickets, what PPE is required?
Eye and Hand protection must be used when installing Type 11 Pickets.
