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World Rugby Handbook

SCHEDULE 1 REGULATION 12 4.4.2 Apparatus A suitable set-up is shown in Figure 6. The headgear is positioned on a test headform (to EN 960 and without hair). A support is provided for the headform. A vertical guide assembly with anvil is attached below the headgear with two round pins of diameter 12mm and 76mm apart (between centres). The total mass of the guide assembly with anvil is 7 kg +/- 0.02 kg. A drop weight of 10 kg +/- 0.02 kg can be moved up the guide assembly and dropped onto the anvil in a substantially frictionless fall through a distance of 300 mm +/- 5 mm. Figure 6. Apparatus for Test of Retention System Strength 4.4.3 Procedure The headgear is mounted on the test headform and the retention system is adjusted so the headgear is securely positioned. The guide assembly is attached to the chin strap of the headgear. The mass falling through 300mm to the guide assembly anvil exerts a dynamic force under which the strap fails. If the strap fails under the static load, it will be deemed ‘failed’. If the strap fails when additionally subjected to the dynamic load it will be deemed ‘passed’. If the strap does not fail under both static and dynamic load it will be deemed ‘failed’. Last update: 14 January, 2015 202


World Rugby Handbook
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