BS EN 61236:2011 pdf download – Live working — Saddles, stick clamps and their accessories
– symbol IEC 6041 7-521 6:2002-1 0 – Suitable for live working; double triangle (Annex A);
NOTE The exact ratio of the height of the figure to the base of the triangle is 1 ,43. For the purpose of convenience, this ratio can be between the values of 1 ,4 and 1 ,5.
– number of the relevant IEC standard immediately adjacent to the symbol (IEC 61 236). Information or characteristics not required at the work site, such as year of publication of the standard, shall be provided by other means (bar codes, microchips, etc.) or shall be provided on the packaging.
4.6 Instructions for use Each device shall come with the manufacturer’s instructions for use and care. These instructions shall be prepared in accordance with the general provisions given in IEC 61 477. These instructions shall include at least – maximum mechanical rating; – recommended application(s);
– recommendations for cleaning, storage, transportation, periodic testing, refinishing and disposal.
This standard provides testing provisions to demonstrate compliance of the product with the requirements of Clause 4. These testing provisions are primarily intended to be used as type tests for validation of the design input. Where relevant, alternative means (calculation, examination, tests, etc.), are specified within the test subclauses for the purpose of saddles, stick clamps and their accessories having completed the production phase. To show compliance with this standard, the manufacturer shall prove that the type tests have been carried out successfully on at least three devices for each type. However, when the differences between several types of device are limited in number, tests that are unaffected by the differing characteristics of the devices can be carried out on a single type of device, and the results can be used for the other device types. The different type tests, and the order in which these tests are performed are given in Annex B.
The tests in Tables B.1 , B.2, B.3 and B.4 of Annex B shall be performed, following the specified order. NOTE In Tables B.1 , B.2, B.3 and B.4 the numbers within parentheses provide reference to the Subclause where the relevant test is explained. For some families of devices, columns are divided in sub-columns equal to the number of mechanical tests to be applied to these devices (these may be destructive). These sub-columns also show the sequence of tests to be applied (for an example see Table B.5).
Any device failing to pass any one of the tests mentioned in Tables B.1 , B.2, B.3 and B.4 of Annex B shall result in the design being rejected.
5.2 Visual and functional inspection Each device shall be visually inspected to detect manufacturing defaults and to check proper functioning.
The test shall be considered as passed if each device shows compliance with the requirements included in 4.3, 4.4, 4.5 and 4.6 where applicable.
5.3 Dimensional check Each device shall be measured to ensure that its dimensions match the manufacturer’s rated dimensions.
5.4 Durability of marking The durability of the marking shall be verified by thoroughly cleaning the marking for at least 1 min with a piece of lint-free cloth dampened with water and then rubbing it vigorously for a further minimum of 1 min with a piece of lint-free cloth dampened with isopropanol (CH 3 – CH(OH)-CH 3 ). NOTE 1 It is the employer’s duty to ensure that any relevant legislation and any specific safety instructions regarding the use of isopropanol are fully observed. The test shall be considered as passed if the marking remains legible and the letters do not smear. The surface of the device may change. No signs of loosening shall be present for labels. NOTE 2 Marking made by moulding or engraving need not be subjected to this test.
5.5 Mechanical tests
5.5.1 General test provisions and pass criteria The tensile, bending, and slippage force and the torque values shall be progressively applied in increments at a rate of (0,1 ± 0,025) F TN /s, F BN /s, F GN /s and T N /s until the values of 1 ,25 F TN , 1 ,25 F BN , 1 ,25 F GN and 1 ,25 T N are reached. Each value shall then be maintained for 1 min before the results are noted. The test shall be considered as passed if no visible signs of damage are observed on the device and no slippage occurs. These force and torque values shall then be increased again at the same rate as above until the values of 2,5 F TN , 2,5 F BN , 1 ,5 F GN and 2,5 T N are reached. Each value shall be maintained for 1 min before the results are noted again.