PREN 50528 : DRAFT 2008

1 Scope
2 Normative references
3 Definitions
4 Requirements
   4.1 Safety requirements
   4.2 Functional requirements
        4.2.1 General
        4.2.2 Ropes (if any)
        4.2.3 Stile closures
        4.2.4 Pulleys (if any)
        4.2.5 Rung wear devices
        4.2.6 Cradle
        4.2.7 Foot leveller device (if any)
        4.2.8 Adjustable ladder stabilizer (if any)
        4.2.9 Individual standing platform (if any)
   4.3 Electrical requirements
        4.3.1 Electrically non conductive parts
   4.4 Mechanical requirements
        4.4.1 Design
        4.4.2 Dimensions, construction
   4.5 Markings
   4.6 Instruction for use
5 Verification and testing
   5.1 General
   5.2 Design, dimensions, construction
   5.3 Mechanical tests
        5.3.1 Type test
        5.3.2 Alternative means for ladders having completed the
               production phase
   5.4 Marking
        5.4.1 Presence of marking
        5.4.2 Durability of marking
   5.5 Instruction for use
   5.6 Electrical tests
        5.6.1 Type test
        5.6.2 Alternative means for ladders having completed the
               the production phase
6 Conformity evaluation
7 Modifications
Annexe A (informative) - Acceptance test
Annexe B (normative) - Classification of defects and associated
         requirements and tests
Annexe C (informative) - In-service recommendations
   C.1 General
   C.2 Use and storage
   C.3 Inspection before use
   C.4 Maintenance
        C.4.1 Regular maintenance
        C.4.2 Periodic maintenance
Annexe D (normative) - General test procedure
Bibliography

Applies to portable ladders made of non-conductive stiles, including accessories (cradle, adjustable foot, adjustable ladder stabilizer, foot leveller device, etc.) used to work on or near electrical systems and installations in the low voltage range (below 1000 V a.c/1500 V d.c.).