EN 131-2-2006 pdf download.Ladders-Part 2 : Requirements , testing , marking.
b) a second series of specimens comprising 2 batches of 5 samples shall be subjected to the bending test (EN ISO 14125) without undergoing the ageing test for the first batch and after the ageing test (EN ISO 4892-2) for the second batch.
5.16.1.2 Preparation of the samples
The specimens for the ageing test shall be taken from profile of the thinnest thickness scheduled. The specimens shall be sampled according to the main fibre direction(s) into load-bearing elements of the finished product by the test laboratory.
5.16.1.3 Ageing test
One batch from each series of specimens shall be subjected to the ageing test according to the method of EN ISO 4892-2 under the following test conditions:
— the test duration shall be: 500 h;
— the specimens shall be exposed to a xenon arc light source according to method A and In compliance with Table 1 of EN ISO 4892-2:1999;
— the reference temperature chosen for the black standard is (65 ± 3) C:
— the relative humidity chosen is (65 ± 3) %:
— the cycle shall be conducted without any dark period under continuous illumination for (102 ± 0,5) mm and a sprinkling period of (18 ± 0,5) mm;
— the test shall not form the subject of EN ISO 4892-2 concerning the determination of post-exposure property changes.
5.16.1.4 Shock test
The shock test shall be conducted on the two batches of 10 specimens of the first series (see 5.16.1.1) according to standard EN ISO 179-1 under the following conditions:
— the shocks shall be administered perpendicular to the longitudinal direction of the fibres;
-— the shocks shall be delivered in flat position (f) and in normal position (n).
5.16.1.5 Bending test
The bending test shall be carried out on the two batches of 5 samples of the second series (see 5.16.1.1) according to standard EN ISO 14125 under the following conditions.
5.16.2 Thermoplastics
5.16.2.1 Principle
In order to determine the utilisation characteristics of the plastic materials In the load-bearing elements of the structure of ladders and stepladders, tests shall be carried out in the following sequence:
a) a first test series of two batches of five specimens shall be subjected to the tensile test (EN ISO 527-1 and EN ISO 527-2), but before the ageing test for the first batch and after the ageing test (EN ISO 4892-2) for the second batch.
b) a second test series is conducted on three finished products in a chamber under cold (— 20 °C) and hot (60 °C) conditions.
5.16.2.2 Specimen testing
a) Preparation of specimens
The specimens for the ageing and tensile tests shall be sampled from the different elements of the ladder and stepladder structure.
b) Ageing test
A batch of the first test series of specimens shall be subjected to the ageing test according to the method of EN ISO 4892-2 under the following test conditions:
1) the test duration shall be 500 h;
2) the specimens shall be exposed to a xenon arc light source according to method A and in compliance with table 3;
3) the reference temperature chosen for the black standard is (65 ± 3) eC;
4) the relative humidity chosen is (65 ± 5) %;
5) the cycle shall be conducted without any dark period under continuous illumination for (102 ± 0,5) mm and a sprinkling period of (18 ± 0.5) mm:
6) the test shall not form the subject of EN ISO 4892-2 concerning the determination of post-exposure property changes.
c) Tensile test
The tensile test shall be conducted on the two batches of five specimens of the first series (see 5.16.2.1)
according to standards EN ISO 527-1 arid EN ISO 527-2.
5.16.2.3 Acceptance criteria
The acceptance criteria before and after the ageing test shall be ≤ 20 % of the results obtained at the time of the tensile test. If the test results on the specimen samples are positive, tests should be carried out on three finished products successively under cold (— 20 °C) and hot (60 °C) conditions,
a) Cold testing
The three finished products are placed in a chamber at (— 20 ± 1) C during 24 h. After temperature stabilisation at — 20 °C, the finished products are submitted to testing:
For ladders, conduct tests 5.2 Ladder strength test, 5.3 Ladder bending test and 5.6 strength test of rungsfstepsl platforms.
If the tests meet the given acceptance criteria, the same finished products are subjected to hot testing.
b) Hot testing
The three finished products submitted to cold testing are stored at room temperature for 24 h, then placed In a chamber at (60 ± 1) °C for 24 h.
After temperature stabilisation at (60 ± 1) Cc the finished products are subjected to the same tests described for cold testing.
5.16.3 Dielectric test
5.16.3.1 General
The dielectric test applies for the suitability of ladders for a use wtiere the voltage is less than 1 000 V a.c and 1 500 Vd.c.
The tests shall be mandatory for all ladders declared as insulated.
When ladders are used where the electrical voltage is greater than 1 000 V. then the ladders shall comply with
EN 61478.
5.1 6.3.2 Preparation of the test piece.EN 131-2-2006 pdf download.