【正文】 e) inertia forces。 c) manually operated dock leveller built in to a loading dock or fixed to the edge of a dock, see Figure 1b) and c). NOTE 2 Dock levellers are provided for loading and unloading operations and are not designed to lift or lower loads. NOTE 3 The lifting or lowering mechanism is only provided to make alterations in the position of the unloaded dock leveller. dock board/bridge plate dock leveller, consisting of a manually operated plate, suspended or loose latched dock leveller dock leveller which is held in a certain position by a positively engaged locking device bridge deck part of the dock leveller in the form of a plate which is used as traffic path for persons and/or transport equipment, but excluding the lip (see Figure 2) 9 BS EN 1398:2022 EN 1398:2022 (E) Key 1 Bridge deck 2 Bearer 3 Hinged lip Figure 2 — Main parts of a dock leveller bearer supporting part of a dock leveller in the form of a beam, fixed at the under side of the bridge deck (see Figure 2) support device part of a dock leveller, e. g. in the form of a block, bar or bolt which supports the dock leveller in the horizontal stored position hinged lip part of a dock leveller hinged to the bridge deck and resting on the vehicle in the operational position (see Figure 2) telescopic lip part of a dock leveller which can be telescopically extended towards the vehicle and which rests on the vehicle in the operational position loading loading or unloading a vehicle using a dock leveller free floating condition mode in which the dock leveller supported on the vehicle may follow automatically the vertical movements of the vehicle during the loading process stored position position to which the dock leveller is put, or to which it returns, when loading has finished 10 BS EN 1398:2022 EN 1398:2022 (E) automatic return return cycle of the dock leveller to its stored position with or without operator initiation installed fixed to a dock edge or built in to the loading dock or a similar area automatic safety device device which automatically prevents an uncontrolled and dangerous lowering of the loaded dock leveller emergency stop device manually operated device intended to stop all movements of a dock leveller in the event of danger rated load weight of the greatest moving load (including goods, persons and transport equipment for goods) for which the dock leveller is designed petent person person who, in accordance with his training and experience, has sufficient knowledge in the field of dock levellers and is sufficiently familiar with relevant regulations to be able to assess the safe condition of dock levellers operational position position of the dock leveller in which it is provided for loading and unloading 4 List of significant hazards The hazards that can influence the safety of persons during operation, maintenance or inspection have been identified by the risk assessment procedure and the corresponding requirements formulated. Table 1 shows the hazards which have been identified and where the corresponding requirements have been formulated in this European Standard. 11 BS EN 1398:2022 EN 1398:2022 (E) Table 1 — Significant hazards and safety requirements Significant hazards Safety requirements。 c) persons near the dock leveller. Objects to be protected are: d) goods on dock levellers。 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1398:2022: E BS EN 1398:2022 EN 1398:2022 (E) 2 Contents Page Foreword..............................................................................................................................................................4 Introduction .........................................................................................................................................................5 1 Scope ......................................................................................................................................................6 2 Normative references ............................................................................................................................7 3 Terms and definitions ...........................................................................................................................8 4 List of significant hazards ................................................................................................................. 10 5 Safety requirements and/or protective measures ........................................................................... 12 Calculations and dimensions ............................................................................................................ 12 General safety requirements and protective measures.................................................................. 16 Additional requirements for manually operated dock levellers..................................................... 19 Additional requirements for poweroperated dock levellers ......................................................... 20 6 Verification of the safety requirements and/or the protective measures ..................................... 24 7 Information for use ............................................................................................................................. 25 General................................................................................................................................................. 25 Marking ........................................................