PREN 280 : DRAFT 2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 List of hazards
5 Safety requirements and/or measures
   5.1 General
   5.2 Structural and stability calculations
        5.2.1 General
        5.2.2 Loads and forces
        5.2.3 Determination of loads and forces
        5.2.4 Stability calculations
        5.2.5 Structural calculations
   5.3 Chassis and stabilisers
   5.4 Extending structure
   5.5 Extending structure drive systems
        5.5.1 General
        5.5.2 Wire rope drive systems
        5.5.3 Chain drive systems
        5.5.4 Lead-screw drive systems
        5.5.5 Rack and pinion drive systems
   5.6 Work platform
   5.7 Controls
   5.8 Electrical equipment
   5.9 Hydraulic systems
   5.10 Hydraulic cylinders
   5.11 Safety devices
6 Verification of the safety requirements and/or
   measures
   6.1 Examinations and tests
        6.1.1 General
        6.1.2 Design check
        6.1.3 Manufacturing check
        6.1.4 Tests
   6.2 Type tests of MEWPs
   6.3 Tests before placing on the market
7 Information for use
   7.1 Instruction handbook
        7.1.1 General
        7.1.2 There shall be provisions in the instruction
               handbook to record:
   7.2 Marking
Annex A (informative) - Use of MEWPs in wind speeds greater
        than 12,5 m/s (Beaufort-Scale)
Annex B (informative) - Dynamic factors in stability and
        structural calculations
   B.1 Stability calculations
   B.2 Structural calculations
Annex C (normative) - Calculation of wire rope drive systems
   C.1 General
   C.2 Calculation of wire rope drive systems
   C.3 Calculation of rope diameters (coefficient c)
   C.4 Calculation of the diameters of rope drums, rope
        pulleys and compensating pulleys [coefficient
        (h[1] . h[2])]
   C.5 Efficiency of wire rope drive systems
Annex D (informative) - Calculation example - wire rope
        drive systems
   D.1 Method used to determine the coefficients and ratios
        used for 5.5.2 (wire rope drive systems) using the
        load cycle figures in 5.2.5.3 and operating speeds
        in 5.4.5
        D.1.1 General
        D.1.2 Notes
        D.1.3 Annex C (normative) method summarised
        D.1.4 Calculation example
   D.2 Calculation of the diameters of rope drums, pulleys and
        static pulleys
Annex E (informative) - Calculation example - factor "s",
        kerb test
Annex F (normative) - Additional requirements for wireless
        controls and control systems
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2006/42/EC
Bibliography

Defines technical safety requirements and measures for all types and sizes of Mobile Elevating Work Platform (MEWP) intended to move persons to working positions where they are carrying out work from the work platform (WP) with the intention that persons are getting on and off the work platform only at access positions at ground level or on the chassis.