Always consider the length of an anchor point in a fall protection system, as this has influence on fall protection
distance.
! Pay attention to some elements connected to the beam which may influence the reduction of its strength, e.g.
connecting anchor point to wide webbings.
! The device AT251 is designed for protection of three persons.
! Do not use the device AT251 for securing, lifting or lowering of any loads.
! For protection against falls from a height use a fall protection system reducing the braking force impacting the user
during fall arresting up to max. 6 kN (e.g. energy absorber with lanyard or fall arrester).
INSTALLING THE DEVICE
The device AT251 can only be installed on horizontal elements made of prestressed concrete slabs of measurements
specified in corresponding standards what shall disable the device's disconnection and enable its proper clamping during a
fall.
Always make sure that after the connection to a structural anchor point, the anchor device is properly clamped with adjusting
plate and there is no clearance. Removing clearances prevents a possible uncontrolled, slow shifting of the beam towards the
load direction. Minimal static strength of a structural anchor point must be 12 kN.
Install the device onto concrete slab by unlocking the adjusting plate (Fig. A) and retracting the device's middle beam
maximally. Install the beam onto the concrete slab, release shifting lock and slide in the middle beam until it is self-locked (Fig.
B). Once the beam is set on the concrete slab check whether it has been set properly in slots (Fig. C) and tighten the adjusting
bolt to remove clearance. Connect maximum of three devices suitable to operate horizontally to the device installed in such way
pursuant to EN 353-2, EN358 or EN 360 and according to instruction manuals for the corresponding devices involved (Fig. D).
y
x ? 3
A
B
C
D
Absorber unit for
working on edge
Absorber unit for
working on edge
Fall
arrester
Fall
arrester
h ? 3m
x ? 3m
Anchor beam
Anchor beam
Concrete beam
Concrete beam
The device allows for operation in all directions (Fig. E). The beam in combination with fall arresters and anchor lanyard AZ 800 for roof works have been
tested for usage in the horizontal plane and fall beyond edge in accordance with Directive PPE 89/686/EEC + CNB/P/11.060.
The device can be used at edges such as: steel rolled profiles, wooden beams, rounded sills.
Concrete edges rounded to a radius of not less than 0.5 mm should be additionally protected. Sharp concrete or steel edges should be protected by
mounting adequate protections.
The beam's anchor plate should be connected to connector on fall arrester and then the fall arrester should be connected to anchor lanyard AZ800
cable. Energy absorber should be connected to anchor point on full body harness marked with capital letter “A” with a connector complied with EN 362.
Fall arrester must be connected (anchored) no closer than 3 m from the shorter edge of the concrete beam (distance “x” - Fig. D). Fall arrester's anchor
point may be on the same level as the edge, beyond which a fall may occur, or above. The user can move in horizontal plane over distance "y" no greater
than "x" (Fig. D). The required free space between work station - the roof level and the ground (distance “h” - Fig. D.) must be min. 3 m + 1/2 of the
distance of horizontal move distance “y”, no less than 3 m though. To reduce the falling distance and avoid the pendulum effect the "x" and "y" distances
should be as short as possible, considering the min. value of "x"=3 m.
The user must take into account the risk of injuries when arresting a fall beyond the edge. Special rescue procedures should be introduced and
adequate trainings conducted including possibility of a potential fall beyond the edge.
Prior to any usage of the protective equipment against falls from a height, a component of which is a pipe anchor, check whether all devices are properly
interconnected and cooperate with no interference, and comply with valid standards:
- EN 361 - For full body harness;
- EN 354, EN 355, EN 353-1, EN 353-2, EN 360, EN 362 - For fall protection systems
- EN 795 - For anchor points (structural anchor points)
- EN 341 - For rescue equipment
E
Removing clearances
!
personal protective equipment shall only be used by a person trained and competent in its safe use.
!
personal protective equipment must not be used by a person with medical condition that could affect the safety of the equipment user in normal and emergency use.
!
a rescue plan shall be in place to deal with any emergencies that could arise during the work.
!
it is forbidden to make any alterations or additions to the equipment without the manufacturer's prior written consent.
!
any repair shall only be carried out by equipment manufacturer or his certified representative.
!
personal protective equipment shall not be used outside its limitations, or for any purpose other than that for which it is intended.
!
personal protective equipment should be a personal issue item.
!
before use ensure about the compatibility of items of equipment assembled into a fall arrest system. Periodically check connecting and adjusting of the equipment components
to avoid accidental loosening or disconnecting of the components.
!
it is forbidden to use combinations of items of equipment in which the safe function of any one item is affected by or interferes with the safe function of another.
!
before each use of personal protective equipment it is obligatory to carry out a pre-use check of the equipment, to ensure that it is in a serviceable condition and operates
correctly before it is used.
!
during pre-use check it is necessary to inspect all elements of the equipment in respect of any damages, excessive wear, corrosion, abrasion, cutting or incorrect acting,
especially take into consideration:
- in full body harnesses and belts - buckles, adjusting elements, attaching points, webbings, seams, loops;
- in energy absorbers - attaching loops, webbing, seams, casing, connectors;
- in textile lanyards or lifelines or guidelines - rope, loops, thimbles, connectors, adjusting element, splices;
- in steel lanyards or lifelines or guidelines - cable, wires, clips, ferrules, loops, thimbles, connectors, adjusting elements;
- in retractable fall arresters - cable or webbing, retractor and brake proper acting, casing, energy absorber, connector;
- in guided type fall arresters - body of the fall arrester, sliding function, locking gear acting, rivets and screws, connector, energy absorber;
- in connectors - main body, rivets, gate, locking gear acting.
!
After every12 months of utilization, personal protective equipment must be withdrawn from use to carry out periodical detailed inspection. The periodic inspection must be
carried out by a competent person for periodic inspection. The periodic inspection can be carried out also by the manufacturer or his authorized representative.
In case of some types of the complex equipment e.g. some types of retractable fall arresters the annual inspection can be carried out only by the manufacturer or his authorized
representative.
!
regular periodic inspections are the essential for equipment maintenance and the safety of the users which depends upon the continued efficiency and durability of the
equipment.
!
during periodic inspection it is necessary to check the legibility of the equipment marking.
!
it is essential for the safety of the user that if the product is re-sold outside the original country of destination the reseller shall provide instructions for use, for maintenance, for
periodic examination and for repair in language of the country in which the product is to be used.
!
personal protective equipment must be withdrawn from use immediately when any doubt arise about its condition for safe use and not used again until confirmed in writing by
equipment manufacturer or his representative after carried out the detailed inspection.
!
personal protective equipment must be withdrawn from use immediately and destroyed when it has been used to arrest a fall.
,
!
a full body harness is the only acceptable body holding device that can be used in a fall arrest system.
!
in full body harness use only attaching points marked with capital letter "A" to attach a fall arrest system.
!
the anchor device or anchor point for the fall arrest system should always be positioned, and the work carried out in such a way, as to minimise both the potential for falls and
potential fall distance. The anchor device/point should be placed above the position of the user . The shape and construction of the anchor device/point shall not allowed to
self-acting disconnection of the equipment. Minimal static strength of the anchor device/point is 12 kN. It is recommended to use certified and marked structural anchor point
complied with EN795.
THE ESSENTIAL PRINCIPLES FOR USERS OF PERSONAL PROTECTIVE EQUIPMENT AGAINST FALLS FROM A HEIGHT