IRATA Brazilian Portuguese Code of Practice

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    September 2013 IRATA International code of practice for industrial rope access Part 3: Informative annexes Annex F: Safety considerations when installing or placing anchor devices for use in rope access    Contents   Introduction ......................................................................................................................................... 1   F.1   General....................................................................................................................................... 1   F.2   Installed anchor devices............................................................................................................. 2   F.2.1   General .................................................................................................................................. 2   F.2.2    Anchor rails and other rigid horizontal anchor lines .............................................................. 5   F.2.3   Paired anchor devices ........................................................................................................... 7  1.   F.2.4  ............................................................................................................... Ground anchors 8   F.3   Placed anchor devices ............................................................................................................. 11   F.3.1   General ................................................................................................................................ 11   F.3.2   Tripods and quadpods ........................................................................................................ 11   F.3.3   Deadweight anchors ........................................................................................................... 11   F.3.4   Counterweight anchors ....................................................................................................... 14   F.3.5   Natural anchors (e.g. trees, rock) ....................................................................................... 17   F.3.6   Vehicles and mobile site machinery .................................................................................... 18   F.3.7    Anchor connectors (e.g. scaffold hooks) ............................................................................. 19   F.3.8    Anchor slings ....................................................................................................................... 19   F.3.9   Beam clamps ...................................................................................................................... 19   F.4   Guidance on documentation to be supplied for permanently installed anchor devices ........... 20   Figure F.1 —  Examples of minimum spacing between anchor devices set in non-adjacent masonry units ................................................................................................................................................... 4   Figure F.2 —  Example of minimum spacing between anchor devices set in concrete to protect the cone of potential failure around each.................................................................................................. 4   Figure F.3 —  Example of an anchor rail ............................................................................................. 6   Figure F.4 —  Examples of paired anchor devices .............................................................................. 8   Figure F.5 —  Example of length, depth, spacing and angles of installation of ground anchor elements ........................................................................................................................................... 10   Figure F.6 —  Example layout for two ground anchors and connecting lines ................................... 10   Figure F.7 —  Example of a tripod anchor device (in this example with working line and safety line rigged for rescue) .............................................................................................................................. 12   Figure F.8 —  Example of two deadweight anchor devices sharing the load ................................... 13   Figure F.9 —  Example of a single counterweight anchor device being used as an anchor device for two anchor lines ................................................................................................................................ 15   Figure F.10 —  Example of a calculation of the counterweight required for a counterweight anchor device ................................................................................................................................................ 15   Figure F.11 —  Examples of trees being used as anchorages ......................................................... 17   Figure F.12 —  Examples of rock features being used as anchorages ............................................. 18   Figure F.13 —  Example of the use of anchor slings ......................................................................... 19     The first edition of Annex F was published in August 2011. This edition was published in March 2013.  Amendments issued since publication in March 2013  Amd. No Date Text affected 1 2013-Sep-01 Front cover: September 2013 replaces  2013 edition . This page: change of IRATA address and telephone number. Date in footer updated.    All the changes are classed as editorial. Published by: IRATA International First Floor, Unit 3 Eurogate Business Park  Ashford Kent TN24 8XW England   Tel: +44 (0)1233 754600 www.irata.org Copyright © IRATA International 2013 ISBN: 978-0-9544993-5-8    IRATA International code of practice for industrial rope access Part 3 of 5: Informative annexes: Annex F © IRATA International Annex F: Page 1 of 21 2013-Sep-01 Annex F (informative) Safety considerations when installing or placing anchor devices for use in rope access Introduction  Annex F gives advice and other information that could be relevant to users of rope access methods and is one of a number of informative annexes in Part 3 of this code of practice. This informative annex should be read in conjunction with other parts of this code of practice, should not be used in isolation and is not intended to be exhaustive. For further advice, readers should refer to relevant specialist publications . F.1 General NOTE An explanation of various terms relating to anchors is provided in Part 1 via definitions and the accompanying Figure 1.1 in that part. F.1.1  There are many different types of anchor device. These generally fall into two broad categories: those that are installed into the structure or natural feature ( installed anchor devices ), e.g. eyebolts fixed to concrete, brick, block-work or steel beams; anchor rails; paired anchors; ground anchors, and those that are placed without installation into the structure or natural feature (  placed anchor devices ), e.g. tripods; scaffold hooks; deadweight anchors; counterweight anchors; anchor slings; beam clamps. F.1.2  The installation or placement of anchor devices should only be carried out from a safe place, i.e. a place arranged so that there is no risk of a fall from a height, and where there is a safe means of access and egress. F.1.3  When deciding where anchor devices are to be installed or placed, account should be taken of the envisaged work to be carried out from them, e.g. that the point where a descent starts is directly above the intended place of work. F.1.4  Anchor devices should be installed or placed in such a way that they can only be loaded in the directions intended by the manufacturer. Where this is difficult to achieve, special marking on or close to the anchor device which points out the limitations of loading might suffice. All aspects of installation, placement and use should follow the manufacturer’s instructions.   F.1.5  Anchor devices should be positioned so that attached anchor lines avoid contact with any hazardous surface, e.g. edges; abrasive or hot surfaces. If it is not possible or reasonably practicable to position the anchor devices in this way, the anchor lines should be appropriately protected against such hazardous surfaces, e.g. by the use of edge protectors or anchor line protectors (see Part 2, 2.11.3 ). This is essential for the safety of the user. F.1.6 Permanently installed and permanently placed rope access anchor systems should be provided with information relating to the installation or placement and with user instructions, see F.4 for guidance. These anchor systems should be subjected to appropriate inspection and, where appropriate, testing procedures, which should be recorded. F.1.7  Anchor devices, or any component or element of them, should not be modified from the condition in which they were supplied without the manufacturer’s written approval. T his is because a modification might affect the performance of the anchor device and could also cause it to fall outside the manufacturer’s specification.   F.1.8  There is a responsibility on the installer (for installed anchor devices) or the person who placed the anchor (for placed anchor devices, if not temporary) to carry out detailed inspections or to have detailed inspections carried out for them by a competent person at regular intervals, which should be at least every six months. In addition, the user should carry out visual, tactile and, where appropriate, function checks on the anchor devices before each use. The checks and inspections
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