BS EN 1009-5-2020 pdf free download.Machines for mechanical processing of minerals and similar solid materials – Safety Part 5: Specific requirements for cleaning, recycling, sorting and mud treatment machinery
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Cleaning, recycling and mud treatment machinery shall comply with the requirements of EN 1009-1:2020, as far as not modified or replaced by the requirements of this part.
Machines designed with several decks/levels shall comply with EN 1009-4:2020, 4.2.
4.2 Flotation machines
If there is a hazard of crushing, cutting and severing between the dart valve and its seat located in the outlet of the tank, this outlet shall be protected by guards as specified in EN 1009-1:2020, 4.11 from the inside of the tank.
If there is a hazard of inhalation or contact with hazardous substances, the machine shall be equipped with a vacuum system in accordance with the principles of EN ISO 14123-1:2015.
Cleaning of internal parts should be possible from the outside and provision of the procedure for safe cleaning shall be provided in the information for use (see 6.3).
The same principles apply to the area of impeller and diffuser.
4.3 Vacuum filters
If there is a hazard of crushing, cutting and severing
— between the drum and the tank;
— between the drum and the agitator arms;
— between the tank and the agitator arms;
— at the nip points between the belt and tracking rollers in belt drum filter (BDF);
— at the nip point between the belt and the feed box in top feed filter (TFF);
— between the maintenance opening in the tank and the agitator;
— between the maintenance opening in the drum and the tank during its operation;
this area shall be protected by guards as specified in EN 1009-1:2020, 4.11.
These guards shall be of a fixed or movable type.
If there is a hazard of shearing related to the drum edge of the vacuum filter during its operation, the area which can be reached by the operator shall be protected by guards.
4.4 Press filters
Due to the serious hazard of crushing
— between the plates;
— between spray bars;
— between the fixed head and the first plate;
— between wheels or pads of the moving head and the rails in its normal operating conditions;
— between the trap door/drip tray and the frame;
these areas shall be protected either by electro sensitive protective equipment of category II type in accordance to EN 61496-1:2013 and EN 61496-2:2013 or by guards as specified in EN 1009-1:2020,4.11.An emergency stop according to EN 1009-1:2020, 4.10.4 shall be fitted at least at each side.
Cleaning of internal parts should be possible from the outside and provision of the procedure for safe cleaning shall be provided in the information for use (see 6.3).
4.5 Sand unit, fluidised bed separator, sieving equipment
For maintenance purpose, means of access complying with EN 1009-1:2020, 4.4 shall be provided:
— at the discharge of the cyclone;
— dewatering screen.
Between a fixed part of the frame and the dewatering screen, there shall have a foot guard complying with EN ISO 14122-3:2016.
NOTE For changing the deck and the grids of the dewatering screen and the underflow nozzles of the cyclone,the operator can use the dewatering screen as means of access to the maintenance point.
For fluidised bed separator, in case a heating system is fitted, this area shall be protected by guards as specified in EN 1009-1:2020, 4.11 where burning hazard it is determined according to EN ISO 13732-1:2008. In addition, an overheating system shall be provided to stop the combustion material in order to prevent fire conditions.
4.6 Hydro-cyclone
When hydro-cyclone is not part of the sand unit, the design shall allow the use of mobile access means (e.g. mobile elevating working platform fulfilling EN 280:2013+A1:2015).
4.7 Settling tank/clarifier/thickener
4.7.1 General
EN 1009-1:2020, 4.7.1 to 4.7.3 do not apply. In addition, the following requirements apply:
Tanks of settling tank/clarifier/thickener shall be designed to avoid any overflow.
Permanent means of access, especially platform at the top part of settling tank/clarifier/thickener shall be fitted and designed in accordance with to EN 1009-1:2020, 4.4.
For mounting/dismounting phase and in case of exceptional interventions, tanks of settling tank/clarifier/thickener shall be fitted with a passage opening, according to EN 1009-1:2020, 4.2.1, d) at the bottom of the tank.
4.7.2 Clarifiers
In case of clarifier with tunnel, the following requirements apply:
— by exception to EN 1009-1:2020, 4.2.1, d) the minimum dimensions of tunnels shall be 1,2 m height as a minimum and 0,8 m width as a minimum;
— by design, there shall not have any structural parts in the passageway of the tunnel;
— the emergency stop according to EN 1009-1:2020, 4.10.4 shall be fitted at least at the entry and at the exit or end of the tunnel.BS EN 1009-5 pdf download.