BS EN 958-2006 pdf download.Mountaineering equipment Energy absorbing systems for use in kiettersteig (via ferrata) climbing Safety requirements and test methods.
EN ISO 139, Textiles — Standard atmospheres for conditioning and testing (ISO 139:2005) ISO 6487. Road vehicles — Measurement techniques in impact tests — Instrumentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. klettersteig
rock climbing route with artificially constructed, permanent belay NOTE In some cases the term via terrata” is used instead of klettecsteig”.
3.2
energy absorbing system
device with two or more attachment points, used to reduce the impact force on the anchorage and on an attached climber during a fall
3.3
braking length
increase in the distance between the two attachment points measured at the end of the braking action
4 Safety requirements
4.1 Design
4.1.1 Load bearing connections
All textile load bearing connections shall be designed so that they cannot be altered by the user.
4.1.2 Connectors
If an energy absorbing system is fitted with connectors for attachment to a via ferrata. these connectors shall
be type K connectors according to EN 12275.
4.1.3 Construction
The energy absorbing system shall be designed so that it cannot be disassembled into its component part, except for the connectors.
4.3 Strength of the energy absorbing system
When tested in accordance with 5.5.4, after being subjected to the test in accordance with 5.5.2, the energy
absorbing system shall withstand a static force of 9 kN without breakage.
5 Test methods
5.1 Design
Check by visual examinations and handling that the requirements specified in 4.1.1 to 4.1.3 are met.
5.2 Test sequence
The test samples shall be subjected to the test according to 5.5.2. Additional test samples shall be subjected to the tests according to 5.5.3 and 5.5.4, in that order.
5.3 Conditioning and test conditions for energy absorbing systems with textile components
Condition the test samples in accordance with EN ISO 139, Tests may then be done outside the conditioning room, but the temperature shall be (23 ± 5) °C and the tests shall begin within 5 mm of removal from conditioning room.
5.4 Apparatus
For the test in accordance with 5.5.3, the force measuring device and its associated recording equipment shall
meet the following requirements in accordance with ISO 6487:
a) the apparatus for measuring and recording the arresting impact force shall correspond with ISO 6487, channel frequency class (CFC) 30;
b) the force transducer, in its operating position attached to the fixed point, shall not have a resonance frequency below 100 Hz:
C) the channel amplitude class (CAC) shall be at least 20 kN;
d) the error of the measurement of the arresting impact force (static calibration) shall be less than 1 %:
e) the position of the upper timing point shall correspond with the position of the falling mass when it has fallen (4 500 ± 2) mm from its initial pre-r&ease position. The position of the lower timing point shall be (1 000 ± 2) mm vertically below the upper timing point. Release the falling mass from Its normal release position, but without any rope attached.
5.5 Procedure
5.5.1 General
Carry out the test described in 5.5.2 to 5.5.4 for each of the possible different combinations of attachment between body and kiettersteig, allowable by the manufacturer. Use a new sample for each combination.
5.5.2 Determination of the static force to initiate operation
Mount the test sample in a tensile testing machine according to the combination described in 5.5.1. Apply a progressively increasing force at an operating speed of 100 mm/mm to 150 mmimin and check that
the operation of the energy absorbing system does not occur below 1.2 kN.
5.5.3 Determination of impact force and braking length
Suspend the test sample from a fixed point by the via ferrata attachment points as described in 5.5.1 via a force measuring device. see example in Figure 1.
Attach a catch-plate to the other attachment point. Measure and record the distance apart of the two attachment points of the energy absorbing system in the position loaded only by the catch plate.
Subject the test sample to the impact loading of a mass of (80 ± 0,1) kg falling a distance of (5 000 ± 20) mm. The mass shall fall under gravity, guided, onto a rigid non-compressible catch-plate of mass (5 ± 0,1) kg.
Record the force between the fixed point and the attachment point of the test sample throughout the test. Record the peak force corresponding to the impact.
After the falling mass has come to rest, measure within 1 mm after fall the distance apart of the Iwo attachment points of the energy absorbing system under the static load of the falling mass. Calculate and record the braking length.
5.5.4 Determination of static breaking force
Mount the test sample in the configuration arising at the end of the previous test between the two attachment points in a tensile testing machine.
Apply a progressively increasing force at an operating speed of (100 to 150) mm/mm until the force exceeds 9 kN.
6 Marking
Energy absorbing systems shall be marked clearly, indelibly and durably with at least the following information:
a) name of the manufacturer or its representative in the European Community;
b) identification of the name. if several models are marketed by the same manufacturer;
c) year of manufacture.
7 Information supplied by the manufacturer
The energy absorbing system shall be supplied with an explanatory leaflet, and written In at least the official language(s) of the state of destination within the European Community containing at least the following items:
a) name and address of the manufacturer or its representative in the European Community
b) number of this European Standard, i.e. EN 958;BS EN 958-2006 pdf download.