WG 11 - TC 78/WG 11

IEC 61477:2009 gives the minimum requirements relative to specification, manufacture, selection, application and maintenance of tools, devices and equipment for live working. It provides the type of information which is useful to skilled persons in order to make the use of tools, devices and equipment safer. This type of information includes:
- the characteristics of tools, devices and equipment;
- their conditions for use;
- their conditions for maintenance;
- their conditions for storage and transportation.
Such information may be given in standards, manufacturer's instructions for use and in internal regulations set forth by companies for their own employees. Such information should be completed by work methods, which are excluded from the scope of this standard. This second edition of IEC 61477 cancels and replaces the first edition published in 2001, its Amendment 1 (2002) and Amendment 2 (2004). The contents of the corrigendum of April 2009 have been included in this copy.

Provides elements for product conformity assessment. Critical defects on tools, devices and equipment for live working are not acceptable. Major defects on tools, devices and equipment for live working are likely to result in failure or in a significant reduction of functionality, while minor defects do not reduce significantly the functionality. This standard defines assessment methods for products having completed production phase to assure that they conform to the requirements of the corresponding product standard. It is to be used in conjunction with live working corresponding product standards. The following elements are not covered by the present document, but are included in each product standard: - type tests; - provisions and description for sampling and routine tests; - the identification and classification of the corresponding defects resulting from a risk analysis. This third edition cancels and replaces the first edition which was issued as a technical report in 1994 with its Corrigendum 1 (2000), and the second edition, withdrawn, which was issued as a standard in 2003. It includes the following significant technical changes from the previous edition: - change of the purpose of the document from a support to standard writers to a standard for assessing the conformity by testing of products having completed the production phase; - clarification of the definitions of critical, major and minor defects; - specification of ISO 2859 for the manufacturers to define the appropriate sampling plans; - review of the acceptance quality limit (AQL) to specify lower limits.

This Technical Report covers procedures for the installation and maintenance of optical fibre cables on overhead power lines. This includes: - optical ground wire (OPGW) fibre cable; - optical phase conductor (OPPC) fibre cable; - optical attached fibre cable (OPAC); - all dielectric self supporting (ADSS) optical fibre cable. Optical fibre cables are considered for single and multi-circuit constructions in common use within some countries. The primary concern is the necessary precautions to ensure the safety of personnel and equipment when installing or maintaining these types of optical fibre cable on overhead power lines.