BS EN 12013:2018 pdf download

BS EN 12013:2018 pdf download.Plastics and rubber machines – Internal mixers – Safety requirements
1 Scope
This European Standard deals with all significant hazards, hazardous situations or hazardous events relevant to the design and construction of internal mixers during all phases of the machine life cycle (see EN ISO 12100:2010, 5.4), irrespective of their size and of the control modes of the feeding door and discharge door, for production and laboratory applications, when the machines are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A). An internal mixer for production and a tandem mixer with manual feeding begins at the feeding door and ends at the lower edge of the material discharge opening. An internal mixer for production and a tandem mixer with automatic feeding begins at the conveyor, which is an integral part of the machine, and ends at the lower edge of the material discharge opening. A laboratory internal mixer begins at the feeding door and ends at the material container, which is an integral part of the mixer. With regard to noise emission measurement and declaration, only laboratory mixers are covered. Explosion hazards are not dealt with in this document. NOTE Internal mixers usually do not produce explosive atmospheres. Where materials are processed, which may cause an explosive atmosphere, the Directive 2014/34/EU on the Equipment and protective systems intended for use in potentially explosive atmospheres (ATEX) can be applied. Exhaust systems are not covered. This European Standard is not applicable to internal mixers manufactured before the date of its publication.
4.4 Emergency stop
Emergency stop equipment shall comply with EN ISO 13850:2015. The emergency stop shall interrupt all energy supply for the internal mixer. The stop category shall be in accordance with category 0 of EN 60204-1:2006, 9.2.2. The emergency stop safety function shall be in accordance with PLr=C. When a fire emergency procedure has started, it shall be possible to activate manually the completion of the fire emergency procedure even if an emergency stop has been activated.
4.5 Emergency stop devices
One or more emergency stop devices shall be provided. The number of the devices depends on the dimensions of the machine and its configuration. The emergency stop devices shall be so positioned, that from all of the operating positions at least one is easily accessible. Emergency stop devices shall be positioned at least at the operating position [control panel), at the feed hopper, at the hydraulic unit and at the control cabinet. For laboratory internal mixers, a single emergency stop device mounted at the control panel is sufficient, if the control panel is positioned in the vicinity of the feed openings and a clear view to these openings is ensured.