BS EN 12278:1998 pdf download.Mountaineering equipment – Pulleys – Safety requirements and test methods.
This standard specifies safety requirements and test. methods for pulleys for use in mountaineering including climbing.
4 Safety requirements
4.1 Design
4.1.1 Pulleys shall have a means for attachment of a connector which is large enough to accommodate a pin of diameter 12 mm. Testing in accordance with 5.3.1.1.
4.1.2 The pulley, particularly its sheaves, shall be large enough to accommodate a rope or an accessory cord of such diameter as marked on the pulley. rresting in accordance with 5.3.1.2.
5 Test methods
5.1 Sampling
For the tests the number of test. samples required is determined by the number of sheaves, their size and the material from which they are made to ensure that each sizelmaterial-cornbination is tested.
5.2 Apparatus
5.2.1 Strength test apparatus according to Figure 1 transmitting the force F:
— by means of the U-bar in accordance with Figure 2 in the attachment point of the pulley; and
— with a rope with nominal diameter equal to the maximum diameter on the pulley threaded through the sheaves of the pulley according to the instructions for use.BS EN 12278:1998 pdf download.