BS EN 00422:2009 pdf download
BS EN 00422:2009 pdf download.Plastics and rubber machines一Blow moulding machines一 Safety requirements.
4.2 Mechanical hazards related to power operated movements during production
NOTE In subclauses 42 to 4,4, the sequence of hazards corresponds with the sequence of the safely requiremeels and/or protective measures speoded in subclauses 5.2 to 5.4.
Injuries due to dangerous movements or parts as listed in Table 1 (see 5.2.1).
4.3 Additional hazards associated with machines of specific design
4.3.1 Machines allowing whole body access
Crushing. shearing. impact and entanglement by moving parts when operators have whole body access:
— in the area of movement of the moulds;
— between the guard or safely device and dangerous moving parts; through the discharge aperture.
4.32 Rotary machines
Crushing, shearing, drawing-in or impact due to movements of the rotating table.
Crushing. shearing. drawing-in or impact due to movements of the rotating table because of imbalance during
mould changing (only in the case of a horizontal axis of rotation).
4.4 Additional hazards when using ancillary equipment
Hazards are dependent on the type of ancillary equipment.
5 Safety requirements andlor protective measures
5.1 General
5.1.1 Basic requirements
Blow moulding machines shall comply with the safety requirements and/or protective measures of this clause. In addition, the mactime shall be designed in accordance with the prnciples of EN ISO 12100 for relevant but not s4gnificant hazards which are not dealt with in this document.
The safety related parts of the control system shall be designed in accordance with EN ISO 13849-1:2006. The required performance level (PL) for each safety function is specihed below. See also 7.1.2.
Adjustment elements which must be adjusted during production shall be accessible from outside the danger zone. When these adlustment elements are higher than 2 m above floor level, permanent means or access according to EN ISO 14122 series shall be provided. Where a special tool is necessary for adjustment such a tool shall be supplied by the mactime manufacturer.
5.12 Safety distances
For fixed guards or machine parts preventing access to the moving moulds (closing and transfer movements). EN ISO 13857:2008 Tables 2 and 4 shall be used. Tables 1 and 4 shall be used m all other cases.
Electro-sensitive protective equipment (ESPE) shall be positioned in accordance with EN 999:1998.
5.1.3 Emergency stop
The emergency stop shall stop all movement but not necessary the heating. The stop category shall be 0 or I according to EN 60204-1:2006 whichever provides the shorter rundowii time. See 7.13.
5.1.4 Fluid systems
Hydraulic and pneumatic systems shall be designed In accordance with respectively EN 982:1996 and
EN 983:1996.
The flexible hoses for hydraulic flwds under a pressure of more than 50 bar and for pneumatic fluids of more than 10 bar shall be secured to the machine by additional fastenings (for example chains) limiting the whiplash. On machines equipped with guards, this requiement does not apply to flexible hoses situated inside the guards
However, additional fastenings for flexible hoses for blowing fluids are also required inside the machine, except If the machine is safeguarded by intertocking guards with guard locking and the pressure In the pneumatic hoses is reduced to under 10 bar before the guard lock can be released. The Pt. for This safety function shall be c.
To avoid injury by ejected fluids accessible hoses and connections shall be covered by guards. For hydraulic or pneumatic accumulators the following shall apply,
The operation of a protective device shall interrupt all power from accumulators for the blowing fluid or
which are associated with dangerous movements.
— Actuation of the emergency stopping devices or disconnection of power to the mactime shall isolate all power from accumulators for the blowing fluid or which are associated with dangerous movenients Where accumulators are integrated parts of the machine, unloading shall be initiated automatically.
— Visual indication of accumulator pressure shall be provided. Where hydraulic accumulators are integrated parts of the machine, the isolating valve or valves shall be position monitored, When The position monitoring system detects the valve or valves failing to isolate the accumulators, then:
— an optical or audible signal shall be given: and
— all accumulators connected with the failed valve or valves shall be automatically unloaded.
