EN 341:2011

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Persönliche Absturzschutzausrüstung - Abseilgeräte zum RettenÉquipement de protection individuelle contre les chutes - Descendeurs pour sauvetagePersonal fall protection equipment - Descender devices for rescue13.340.60Protection against falling and slippingICS:Ta slovenski standard je istoveten z:EN 341:2011SIST EN 341:2011en01-december-2011SIST EN 341:2011SLOVENSKI
STANDARDSIST EN 341:2002SIST EN 341:2002SIST EN 341:1996/AC:19981DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 341
June 2011 ICS 13.340.99 Supersedes EN 341:1992English Version
Personal fall protection equipment - Descender devices for rescue
Équipement de protection individuelle contre les chutes - Descendeurs pour sauvetage
Persönliche Absturzschutzausrüstung - Abseilgeräte zum Retten This European Standard was approved by CEN on 25 May 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 341:2011: ESIST EN 341:2011

Significant technical changes between this European Standard and EN 341:1992 . 21 Figures Figure 1 — Dynamic strength test for descender devices that normally travel with the user . 11 Figure 2 — Dynamic strength test for descender devices that normally do not travel with the user . 12 Figure 3 — Example of test apparatus for test of integrity of lines and for descent energy of an
automatic descender device (type 1) . 16 Figure 4 — Example of test apparatus for test of integrity of lines and for descent energy of a
manually-operated descender device (type 2) . 17
EN 364:1992, Personal protective equipment against falls from a height — Test methods EN 365:2004, Personal protective equipment against falls from a height — General requirements for instructions for use, maintenance, periodic examination, repair, marking and packaging EN 1496:2006, Personal fall protection equipment — Rescue lifting devices EN 1891:1998, Personal protective equipment for the prevention of falls from a height — Low stretch kernmantel ropes EN 12385-1, Steel wire ropes — Safety — Part 1: General requirements
EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2006) 3 Terms, definitions and classes For the purposes of this document, the terms and definitions of EN 363:2008 and the following apply. 3.1 Terms and definitions 3.1.1 descender device automatic (type 1) or manually-operated (type 2) device, including a line, by which persons can, at a limited velocity, rescue themselves or others from a higher to a lower position in such a way that a free fall is prevented NOTE
A line could be e.g. wire rope, textile rope, or webbing. 3.1.1.1 automatic descender device (type 1) descender device with a braking system that does not require an intervention by the user once the descent has commenced SIST EN 341:2011

Descent energy W = m × g × h × n
where
W
is the descent energy, expressed in joules (J);
m
is the descent load, expressed in kilograms (kg);
g
is the gravity 9,81 m/s2;
h
is the descent height, expressed in metres (m);
n
is the number of descents. 3.1.3 minimum rated load minimum mass of the person(s), including tools and equipment, for the descender device, as specified by the manufacturer
NOTE Minimum rated load is expressed in kilograms. 3.1.4 maximum rated load maximum mass of the person(s), including tools and equipment, for the descender device, as specified by the manufacturer
NOTE Maximum rated load is expressed in kilograms. 3.2 Classes Descender devices are classified as follows: a) class A: descent energy W
up to 7,5 × 106 J; b) class B: descent energy W
up to 1,5 × 106 J; c) class C: descent energy W
up to 0,5 × 106 J; SIST EN 341:2011

4.2 Design, materials and construction 4.2.1 General Materials which may come into contact with the skin of a user shall not be known to, or suspected to, adversely affect user hygiene or health, e.g. cause irritating or sensitization effects, during normal use of the descender device. Descender devices shall not have sharp or rough edges that may cut, abrade or otherwise damage rope or webbing or cause injury to the user.
When descender devices in accordance with this standard have a rescue lifting function, they shall in addition to this European Standard conform to EN 1496:2006, class A. Connectors shall conform to EN 362. 4.2.2 Lines Lines shall be made from steel or stainless steel wire rope, textile rope or webbing. Lines shall have at least one termination. Line ends that do not have a termination shall have an end stop. The ends of the lines shall be protected against slipping through the descender device unintentionally.
Lines including their termination(s) shall be of a type capable of visual inspection or else subject to manufacturers' guidance for appropriate examination. 4.2.2.1 Wire rope lines Wire rope lines shall be made from one piece and shall be stress and torsion relieved.
Wire rope lines made from steel except stainless steel shall be galvanized to EN 12385-1. The nominal tensile strength of the wires of the steel or stainless steel wire rope shall not exceed 1960 N/mm2. SIST EN 341:2011

4.2.2.2 Textile rope lines Textile rope lines for descender devices, class A, B or C shall be of kernmantel construction and shall conform to EN 1891:1998, type A, 4.1 to 4.10.
4.2.2.3 Webbing lines Webbing lines shall meet the requirements of EN 1891:1998, 4.5, 4.6 and 4.10. Webbing lines shall be made from virgin filament or multi-filament synthetic fibres suitable for the use intended. The breaking tenacity of the synthetic fibre shall be known to be at least 0,6 N/tex.
The materials used for the construction of the webbing line shall be known to have a melting point of more than 195 °C. Webbing lines made from polypropylene or polyethylene shall not be used. 4.2.2.4 Line integrity When tested in accordance with 5.9, lines made of stainless steel wire rope or made of textiles containing aramid fibres shall withstand a test force as given in 4.6, applied for 3 min. 4.2.2.5 Terminations, end stops Lines shall be terminated in such a manner that they can be connected, directly or by an appropriate connector as specified by the manufacturer, to a body holding device, e.g. a rescue harness or a rescue loop, or to an anchor device.
Reinforcement or another method shall be used to protect terminations from concentrated wear at all webbing-to-metal fitting interfaces.
All splices shall be secured to prevent the splice from coming open in use.
Eye splices in laid fibre rope shall consist of at least four tucks using all the yarns in the strands. The length of the splicing tails emerging after the last tuck shall be at least one rope diameter. Threads used for sewing shall be physically compatible with the webbing/rope, and the quality shall be compatible to that of the webbing/rope. They shall, however, be of a contrasting shade or colour in order to facilitate visual inspection. When using a knot for forming a termination or as an end stop, the knot shall be secured so that it cannot be opened without the use of a tool. When tested in accordance with 5.6, the tail end of the knot shall have a minimum length of 100 mm. Webbing ends shall be sealed or otherwise prevented from unravelling. Eye terminations of wire ropes shall be made with thimbles and by splices or with thimbles and by pressed ferrules. 4.3 Dynamic strength When tested in accordance with 5.3, the descender device shall not release the test mass and no part of the descender device shall show any signs of breaking or tearing.
a) it shall be possible to maintain a continuous descent velocity between 0,5 m/s and 2 m/s; b) in the case of a manually-operated descender device, the velocity shall not exceed 2 m/s when the control device is in a hands-off position or if applicable any panic locking element is engaged;
c) none of the parts of the descender device handled by the user to control the descents shall develop a temperature higher than 48 °C during the descents. When tested in wet and cold conditions in accordance with 5.4.3, it shall be possible to maintain a continuous descent velocity between 0,5 m/s and 2 m/s. If the manufacturer claims that the descender device can be used at temperatures lower than – 4 °C, it shall be possible to maintain a continuous descent velocity between 0,5 m/s and 2 m/s when tested in very cold conditions in accordance with 5.4.4. 4.4.2 Class D When tested in the dry condition in accordance with 5.4.1:
a) it shall be possible to maintain a continuous descent velocity at a maximum of 2 m/s; b) in the case of a manually-operated descender device, the velocity shall not exceed 2 m/s when the control device is in a hands-off position or if applicable any panic locking element is engaged;
c) none of the parts of the descender device handled by the user to control the descent shall develop a temperature higher than 48 °C during the descent. If the manufacturer claims that the descender device can be used in wet conditions, it shall be possible to maintain the descent velocity at a maximum of 2 m/s when tested in the wet conditions in accordance with 5.4.2. If the manufacturer claims that the descender device can be used in the temperature range of (- 4 to + 2) °C, it shall be possible to maintain the descent velocity at a maximum of 2 m/s when tested in the wet and cold conditions in accordance with 5.4.3. If the manufacturer claims that the descender device can be used at temperatures lower than – 4 °C, it shall be possible to maintain a continuous descent velocity at a maximum of 2 m/s when tested in the very cold conditions in accordance with 5.4.4. 4.5 Descent energy When tested in accordance with 5.5, with the descents being carried out in succession, descender devices, class A, B and C shall meet the following requirements: a) they shall resist the descent energy determined for their class; b) the temperature due to friction shall not affect the function of the descender device; c) it shall be possible to maintain the descent velocity between 0,5 m/s and 2 m/s; d) none of the parts of the descender device handled by the user to control the descents shall develop a temperature higher than 48 °C during the descents. SIST EN 341:2011

4.9 Additional requirements for descender devices, class D After testing in accordance with 5.4, Class D descender devices shall indicate clearly that they have been used. 4.10 Marking and information Marking of the descender device shall be in accordance with Clause 6. Information shall be supplied with the descender device in accordance with Clause 7. 5 Test methods 5.1 Test samples A minimum of two new descender devices shall be provided: one for the purposes of the tests specified in 5.2 and 5.10 and one for the purposes of the tests specified in 5.3, 5.4, 5.5, 5.6, 5.7 and 5.8. SIST EN 341:2011
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