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BS EN 1417:2023 – TC

BS EN 1417:2023 – TC

$258.95

Tracked Changes. Plastics and rubber machines. Two-roll mills. Safety requirements

Published By Publication Date Number of Pages
BSI 2023 138
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This document deals with all significant hazards, hazardous situations or hazardous events relevant to two-roll mills for the processing of rubber and/or plastics (see Annex A), when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer during all the phases of the life of the machine as described in EN ISO 12100:2010, 5.4. This document covers two-roll mills as defined in 3.1. This document covers two-roll mills intended to be used in normal production and two-roll mills intended to be used in laboratories (testing of mixtures by batchwise processing of small amounts, not continuously). This document is applicable to the following ancillary equipment as integral part of the machine: – powered stock guides; – strip cutting device; – stock blender; – recovery conveyor belt; – retractable ploughs; – secondary roller; – supply of heating and/or cooling fluids. This document does not apply to the design of a local exhaust ventilation system that might be necessary in specific applications of the machine not known by the manufacturer. This document does not apply to two-roll mills manufactured before the date of its publication as a European Standard.

PDF Catalog

PDF Pages PDF Title
1 30483526
77 A-30435355
78 undefined
86 1 Scope
2 Normative references
88 3 Terms and definitions
92 4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.2 Control systems
4.2.1 General
4.2.2 Starting
4.2.3 Normal stopping
4.2.4 Emergency stop
93 4.2.5 Failure of power supply
4.3 Mechanical hazards
4.3.1 Requirements applicable to all types of two-roll mills
4.3.1.1 Hazards of drawing-in and crushing between the mills rolls during normal (forward and reverse) operation
94 4.3.1.2 Hazards of drawing-in and crushing in drive mechanisms
4.3.1.3 Hazard of drawing-in and crushing between the stock guides and the mill rolls
95 4.3.1.4 Powered stock guides
4.3.1.5 Strip cutting device
96 4.3.1.6 Stock blender carriage
4.3.1.7 Stock blender rolls
97 4.3.1.8 Recovery conveyor belt
98 4.3.1.9 Mill tray
4.3.1.10 Retractable ploughs
4.3.1.11 Secondary roller
99 4.3.2 Specific requirements applicable to large two-roll mills (D > 200 mm)
4.3.2.1 Prevention of access to the principal crushing zone
102 4.3.2.2 Hazard of drawing-in and crushing between the mill rolls during reverse operation
103 4.3.2.3 Additional safety requirements for emergency release of persons
104 4.3.3 Specific requirements applicable to small two-roll mills (D ≤ 200 mm)
4.3.3.1 General
4.3.3.2 Installation of the machine
4.3.3.3 Prevention of access to the principal crushing zone by guards or a combination of guards and a trip device
106 4.3.3.4 Prevention of access to the principal crushing zone by a combination of fixed and/or interlocking guards with or without guard locking and other protective devices
109 4.3.3.5 Requirements for knee plates
4.4 Electrical hazards
4.4.1 Electrical shock or burns caused by direct or indirect contact with live parts
4.4.2 Electrical shock, or fire due to electrostatic discharge
4.5 Hazards due to electromagnetic interference
4.6 Thermal hazards
110 4.7 Hazards caused by gases, dusts or vapours hazardous to health
4.8 Hazards generated by neglecting ergonomic principles
4.9 Hazards generated by noise
4.9.1 Main noise sources
4.9.2 Noise reduction at source by design
4.9.3 Noise reduction by devices
4.9.4 Information connected with noise hazards
4.10 Hazards due to unexpected start-up
4.11 Hydraulic and pneumatic equipment
111 5 Verification of safety requirements and/or protective/risk reduction measures
114 6 Information for use
6.1 General
6.2 Instruction handbook
6.2.1 General
115 6.2.2 Two-roll mills equipped with a trip bar as in 4.3.2.1
6.2.3 Two-roll mills equipped with a trip device as in 4.3.3.3
116 6.2.4 Two-roll mills equipped with light curtains as in 4.3.3.4.3
6.2.5 Laboratory two roll mills
6.2.6 Noise emission
6.3 Marking
117 6.4 Warning notice/signs on two-roll mills equipped with a trip bar as in 4.3.2.1
6.5 Warning notice/signs on two-roll mills equipped with a trip device as in 4.3.3.3
118 Annex A (informative)List of significant hazards
122 Annex B (normative)Positioning of the trip devices specified in 4.3.3.4.2
B.1 Production applications
125 B.2 Laboratory applications
126 Annex C (normative)Noise test code
C.1 General
C.2 Determination of the A-weighted emission sound pressure level at the workstation
C.2.1 Basic standards and measurement procedure
127 C.2.2 Measurement uncertainty
C.3 Determination of the A-weighted sound power level
C.3.1 Basic standards and measurement procedure
C.3.2 Measurement uncertainty
C.4 Mounting and operating conditions
128 C.5 Information to be recorded and reported
C.5.1 General
C.5.2 General data
C.5.3 Mounting and operating conditions
C.5.4 Standards
129 C.5.5 Noise data
C.6 Declaration and verification of noise emission values
132 Annex D (informative)Positioning of trip bar
133 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered

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BS EN 1417:2023 - TC
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