Stopping device Clause Samples
A 'Stopping device' clause defines the requirements and specifications for a mechanism that can halt the operation of equipment or machinery. Typically, this clause outlines the types of stopping devices to be installed, their locations, and the conditions under which they must be activated, such as in emergencies or for routine maintenance. The core function of this clause is to ensure the safety of personnel and equipment by providing a reliable means to quickly and effectively stop machinery, thereby reducing the risk of accidents and equipment damage.
Stopping device. 4.1. The device consists of two identical absorbers mounted in parallel.
4.2. If necessary, an additional absorber shall be used for each 200 kg increase in nominal mass. Each absorber shall comprise:
4.2.1. An outer casing formed from a steel tube;
4.2.2. A polyurethane energy-absorber tube;
4.2.3. A polished-steel olive-shaped knob penetrating into the absorber; and
4.2.4. A shaft and an impact plate.
Stopping device. 4.1. The device consists of two identical absorbers mounted in parallel.
4.2. If necessary, an additional absorber shall be used for each 200 kg increase in nominal mass. Each absorber shall comprise:
4.2.1. An outer casing formed from a steel tube;
4.2.2. A polyurethane energy-absorber tube;
4.2.3. A polished-steel olive-shaped knob penetrating into the absorber; and
4.2.4. A shaft and an impact plate.
4.3. The dimensions of the various parts of this absorber are shown in the diagram reproduced in Appendix 2 to this Annex.
4.4. The characteristics of the absorbing material are given in table 3 and table 4 of this Annex.
4.5. The stopping device assembly shall be maintained for at least 12 hours at a temperature between 15 ° and 25 °C before being used for the calibration tests described in Annex 7 to this Regulation. The stopping device shall, for each type of test, meet the performance requirements laid down in Annex 7,Appendices 1 and 2. For dynamic tests of an Enhanced child restraint, the stopping device assembly shall be maintained for at least 12 hours at the same temperature, to within ± 2 °C, as that of the calibration test. Any other device giving equivalent results can be accepted. Table 3 Characteristics of the absorbing material "A" 2/ Shore hardness A: 88 ± 2 at 20 ± 5 °C temperature Breaking strength: Ro ≥ 300 kg/cm2 Minimum elongation: Ao ≥ 400 per cent Module at 100 per cent elongation: ≥ 70 kg/cm2 Module at 300 per cent elongation: ≥ 130 kg/cm2 Low temperature brittleness (ASTM Method D 736): 5 hours at - 55 °C Compression set (Method B): 22 hours at 70 °C ≤ 45 per cent Density at 25 °C: 1.08 to 1.12 Ageing in air (ASTM Method D 573 (1981)): 70 hours at 100 °C: Shore hardness: max. variation ± 3 breaking strength: decrease < 10 per cent of Ro elongation: decrease < 10 per cent of Ao weight: decrease < 1 per cent Immersion in oil (ASTM Method D 471 (1979) Oil No. 1): 70 hours at 100 °C: Shore hardness: max. variation ± 4 breaking strength: decrease < 15 per cent of Ro elongation: decrease < 10 per cent of Ao volume: swelling < 5 per cent Immersion in oil (ASTM Method D 471 (1979) Oil No. 3): 70 hours at 100 °C: breaking strength: decrease < 15 per cent of Ro elongation: decrease < 15 per cent of Ao volume: swelling < 20 per cent Immersion in distilled water: 1 week at 70°C: breaking strength: decrease < 35 per cent of Ro elongation: increase < 20 per cent of Ao Shore hardness A: 88 ± 2 at 20 ± 5 °C temperature Breaking strength: Ro ≥ 300 k...
Stopping device. 4.1. The device consists of two identical absorbers mounted in parallel, except in the case of restraint systems when four absorbers shall be used for a nominal mass of 800 kg. If necessary, an additional absorber shall be used for each 200 kg increase of nominal mass. Each absorber comprises: an outer casing formed from a steel tube; a polyurethane energy-absorber tube; a polished-steel olive-shaped knob penetrating into the absorber; and a shaft and an impact plate.
4.2. The dimensions of the various parts of this absorber are shown in the diagrams reproduced in figures 2, 3 and 4.
4.3. The characteristics of the absorbing material are given in table 1 of this annex. Immediately before each test the tubes shall be conditioned at a temperature between 15° and 25 °C for at least 12 hours without being used. During the dynamic testing of safety-belts or restraint systems, the stopping device shall be at the same temperature as during the calibration test, with a tolerance of CHARACTERISTICS OF THE ABSORBING MATERIAL (ASTM Method D 735 unless otherwise stated) Shore hardness A: 95 + 2 at 20 + 5 °C temperature Breaking strength: Ro Minimum elongation: ▇▇ > 343 ▇▇▇/cm2 > 400 per cent Module at 100 per cent elongation: > 108 ▇▇▇/cm2 at 300 per cent elongation: > 235 ▇▇▇/cm2 Low-temperature brittleness (ASTM Method D 736): 5 hours at -55 °C Compression set (Method B): 22 hours at 70 °C < 45 per cent Density at 25 °C: between 1.05 and 1.10 Ageing in air (ASTM Method D 573) 70 hours at 100 °C - Shore-A-hardness: max variation + 3 - breaking strength: decrease < 10 per cent of Ro - elongation: decrease < 10 per cent of Ao - mass: decrease < 1 per cent Immersion in oil (ASTM Method No. 1 Oil): 70 hours at 100 °C - Shore-A-hardness: max variation + 4 - breaking strength: decrease < 15 per cent of Ro - elongation: decrease < 10 per cent of Ao - volume: swelling < 5 per cent Immersion in oil (ASTM Method No. 3 Oil): 70 hours at 100 °C - breaking strength: decrease < 15 per cent of Ro - elongation: decrease < 15 per cent of Ao - volume: swelling < 20 per cent Immersion in distilled water: 1 week at 70 °C - breaking strength: decrease < 35 per cent of Ro - elongation: increase < 20 per cent of Ao. 575 ± 2 material A + 2 7 Ø35 Ø46