Page 6 - FLS
P. 6

Standards for Fixed Line Systems

          Types of Anchors
          A reliable anchor device is an essential component of any personal fall protection system.

           Type A                                   Type B
           Anchor device with one or more           Transportable Anchor device easily carried
           stationary anchor points                 and assembled on site


           Type C                                                        Type E
           Continuous Anchor device using a flexible                     Dead weight Anchor device for use on surfaces up
           anchor line. (Eg. Steel wire rope/webbing/                    to 5° from the horizontal.
           synthetic ropes)


          Type D
          Anchor  device  using  a  rigid
          anchor line. (Eg. Aluminium Rails)


          Single User anchor devices:
          Applicable standard: EN795:2012
          This European Standard is intended to use as a standard guideline for Horizontal Life Line Systems used in fall protection.
          The scope and the requirements are based on the philosophy that anchor devices are rated to sustain the maximum dynamic force generated in a fall
          from a height by the mass of one person, including any equipment carried. The static strength tests are based on a minimum factor of safety of two to
          allow for foreseeable misuse of equipment.
          A static load of 12kN is required to be held for a minimum of three minutes without failure.
          A dynamic performance and integrity test, where a shock load (9 kN at Mobile anchor point) is created by using a test mass of 100kg freely falling from
          a specific height connected to a synthetic lanyard. The life line is further subjected to a static pull of 300kgs for a period of 3 minutes to ensure that the
          same life line can be used for rescue after a fall.
          The life lines can be of single span of different lengths (e.g. Truck Loading /unloading activities), or long lifelines with multiple spans (e.g. Installed on
          roof). The multi span lifelines may also have a corner. All configurations and lengths may not be possible to test, hence EN795 propose dynamic and
          integrity test where the manufacturer is required to predict the forces at extremity and displacement in the cable in set configurations of the lifeline. The
          forces predicted and the displacement of the cable measured during tests should be within a tolerance of 20%.
          As a result of static and dynamic test the system should not release the mobile anchor (carriage body).
          Multi-user anchor devices:
          Applicable standard: CEN/TS 16415:2013
          In many situations, anchor devices are required for more than one user. Some jobs are carried out by more than one person. To ensure that everyone
          has the same level of protection from fall, there needs to be a different and more stringent approach.
          In 2013 a technical sheet CEN/TS 16415:2013 was added to EN795:2012 to address the test requirements, if the life line is used by multiple users. The
          tests according to CEN/TS 16415:2013 is performed in addition to the test requirements of EN795.
          The static load test increases the usual single user requirement in EN 795:2012 by 1.0 kN per extra user claimed. (e.g. 13kN for 2 users, 14 kN for
          3users and 15 kN for 4 users and so on)
          The dynamic performance and integrity test requires a 200 Kg test mass to represent two simultaneous users. For each additional user, a further dynamic
          performance test using a 100 Kg mass is carried out on the same system to simulate multiple users falling on the same anchor device (Life Line).
          The life line is further subjected to a static pull of 600kgs after the dynamic fall of 200 Kg for a period of 3 minutes to ensure that the same life line can be
          used for rescue after a fall. Thereafter for each additional user the static force is increased by 150 kgs.(750 Kg for 3 users, 900 Kg for 4 user and so on).
          After each dynamic drop test, the forces predicted and the displacement of the cable measured during tests should be within a tolerance of 20%.
          The maximum Dynamic force recorded during the tests should not be greater than 50% of the system strength.
          The desired results of dynamic and static tests are that the system does not release the mobile anchor.
          Multiple user anchor devices are not considered 'personal' protective equipment. For devices that will always be used by two or more people
          simultaneously, it is recommended that before buying or using these devices, checks are made on the manufacturer's quality system and that evidence
          is sought to demonstrate compliance with TS 16415:2013.
          Vertical Life Line Systems on wire rope and aluminium rail systems
          Applicable standard: 353-1:2014
          This European Standard is intended to use as a standard guideline for Vertical Life Line Systems used in personal fall protection systems.
          The scope and the requirements are based on the philosophy that a guided type fall arrester including a rigid anchor line is rated to sustain the
          maximum dynamic load generated in a fall from a height by the mass of one person, including any equipment carried.
          This European Standard applies to rigid anchor lines which are intended to be installed vertically.
   1   2   3   4   5   6   7   8   9   10   11