EN 12629-7:2004+A1:2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 List of significant hazards
5 Safety requirements and/or protective measures
6 Verification of safety requirements and/or protective measures
7 Information for use - Instruction handbook
8 Marking
Annex A (informative) - Pre-stressing bed
Annex B (informative) - Bed sweeper, vacuum cleaner, oiler,
        wire-guide machine
Annex C (informative) - Bed layout machine
Annex D (informative) - Strand pushing/pulling machine
Annex E (informative) - Spinner, extruder, vibrodistributor
Annex F (informative) - Tarpaulin paying out and winding
        in machine
Annex G (informative) - Sawing machine
Annex H (informative) - Trilingual list of terms relative to
        pre-stressing manufacturing products and equipment
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2006/42/EC

1.1This part of EN 12629, taken together with EN 12629-1:2000+A1:2010, applies to stationary and mobile equipment for the benched manufacture of prestressed products. The manufacturing bed is a machine with which other associated machines work simultaneously. Moreover, these machines are generally used on beds installed in parallel.EN 12629-1:2000+A1:2010 specifies general requirements applicable to machines for the manufacture of constructional products from concrete and calcium silicate.This document specifies the additional requirements to and/or the deviations from EN 12629-1:2000+A1:2010 specific to the machines it covers.1.2This standard gives particular requirements for the design of the following machines:-Pre-stressing bed (schematic representation is given in annex A);-Bed sweeper, vacuum cleaner, oiler, wire-guide machine (schematic representation is given in annex B);-Bed layout machine (schematic representation is given in annex C);-Strand pushing/pulling machine (schematic representation is given in annex D);-Spinner, extruder, vibrodistributor (schematic representation is given in annex E);-Tarpaulin paying out and winding in machine (schematic representation is given in annex F);-Sawing machine (schematic representation is given in annex G).NOTEThe manufacturing operations include some or all of the following:-treating pre-stressing bed with release agent;-"marking out" the elements (slabs, plain slabs, etc.) to be made;-running the pre-stressing strands;-pre-tensioning;-installing the shutterings, (formwork, side shutters, end plates and inserts)-fixing reinforcement;-tensioning;-concrete distribution and compaction;-winding out the tarpaulin;-heating;-detensioning;-removal of shettering, formwork, etc. ;-strands cutting or sawing;-removal of final products;-bed cleaning.The concrete supply interface which is taken into account for safety is also considered.