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BS EN 620:2021 – TC

BS EN 620:2021 – TC

$258.95

Tracked Changes. Continuous handling equipment and systems. Safety requirements for fixed belt conveyors for bulk materials

Published By Publication Date Number of Pages
BSI 2021 166
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PDF Pages PDF Title
102 undefined
111 1 Scope
112 2 Normative references
114 3 Terms and definitions
120 4 Safety requirements and /or measures for belt conveyors
4.1 General
4.1.1 Introduction
4.1.2 Zone concept
121 4.1.3 Requirements for restricted zone
4.2 Requirements for guards
4.2.1 General
122 4.2.2 Fixed guard
4.2.2.1 General
123 4.2.2.2 Opening(s) in fixed guard
125 4.2.3 Interlocking guard
4.2.4 Inspection cover
4.2.5 Nip guard
128 4.3 Measures for protection against mechanical hazards
4.3.1 General requirements
4.3.2 Crushing and shearing hazards
4.3.2.1 Crushing and shearing points between conveyed material and fixed components of the conveyor
129 4.3.2.2 Raising, lowering, rotating and translating equipment
4.3.2.3 Take-up devices
131 4.3.2.4 Trippers, radial conveyors
4.3.3 Control cabin
4.3.4 Entanglement, drawing-in and trapping hazards
4.3.4.1 General
4.3.4.2 Nip points at pulley and idler
133 4.3.4.3 In-running nips
134 4.3.4.4 Belt cleaning devices and other ancillary devices
4.3.4.5 Transmission parts
4.3.4.6 Feed hoppers, skirt plates and fixed parts
4.3.5 Hazards arising from ejection of parts (of machinery or handled materials)
4.3.5.1 Parts of machinery
135 4.3.5.2 Handled materials
4.3.6 Means of access
4.3.6.1 Walkways, control stations and platforms
137 4.3.6.2 Access over the conveyor
138 4.3.6.3 Access at or around terminals of the conveyor and where material is discharged
4.4 Measures for protection against electrical hazards
4.4.1 General
4.4.2 Environment
4.4.3 Electrostatic charges
4.5 Measures for protection against hydraulic hazards
4.6 Measures for protection against pneumatic hazards
139 4.7 Measures for protection against thermal hazards
4.7.1 Burns and scalds by a possible contact of persons with parts or materials at high temperature
4.7.2 Health damaging effects by hot or cold work environment
4.8 Measures for protection against fire and explosion hazards
4.8.1 Belt friction
4.8.2 Transported material
140 4.9 Neglected ergonomic principles in machine design (mismatch of machinery with human characteristics and abilities)
4.9.1 Unhealthy postures or excessive efforts
141 4.9.2 Isolated work places
4.10 Measures in case of failure of energy supply and other functional disorders
4.10.1 Uncontrolled motion
4.10.2 Failure or malfunction of safety related parts of control systems
4.10.2.1 Safety devices
4.10.2.2 Control systems
4.10.2.3 Operating modes
142 4.10.2.4 Start function
4.10.2.5 Stop function
4.10.2.6 Emergency stop
143 4.10.2.7 Pull-cord operated emergency stop switch
4.10.2.8 Automatic malfunction detection
144 4.11 Measures for protection against hazards arising during inspection, maintenance and cleaning
4.12 Noise reduction at design stage
145 5 Verification of safety requirements and/or measures
5.1 General
147 5.2 Electrical equipment
5.3 Fire or explosion hazards
6 Information for use
6.1 Instruction handbook
6.1.1 General
148 6.1.2 Instructions for the installation of the equipment
6.1.3 Instructions for the operation of the equipment
149 6.1.4 Noise declaration
6.1.5 Instructions for maintenance
151 6.1.6 Training
6.1.7 Decommissioning and dismantling
6.2 Marking
152 Annex A (informative)List of significant hazards
A.1 General
A.2 Mechanical hazards
A.2.1 General
A.2.2 Crushing and shearing hazards
A.2.3 Cutting or severing hazards
A.2.4 Entanglement, drawing-in or trapping hazards
153 A.2.5 Hazards arising from ejection of parts (of machinery or handled materials)
A.2.6 Slip, trip and fall hazards
A.3 Electrical hazards
A.3.1 Electrical equipment
154 A.3.2 Electrostatic charges
A.4 Thermal hazards
A.4.1 Contact with parts or materials at high temperatures
A.4.2 Hazards related to temperature
A.5 Fire or explosion hazards
A.6 Hazards generated by neglected ergonomic principals in machine design
A.6.1 Unhealthy posture or excessive efforts
A.6.2 Mental overload or underload
155 A.7 Hazards arising from failure of the energy supply and other functional disorders
A.7.1 Failure of the energy supply
A.7.2 Failure or malfunction of safety related equipment, controls, or control systems
A.8 Hazards caused by the presence of stored energy
A.8.1 Mechanical hazards
A.8.2 Hydraulic hazards
A.8.3 Pneumatic hazards
A.9 Hazards arising during inspection, maintenance and cleaning
156 Annex B (normative)Specification or required performance level (PLr)
158 Annex C (normative)Noise Test Code
C.1 General
C.2 Operating conditions during measurements
C.3 Determination of A‐weighted emission sound pressure level
C.4 Measurement positions
159 C.5 Information to be recorded
C.6 Information to be reported
C.7 Noise emission declaration
160 C.8 Example of noise declaration
161 Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC aimed to be covered

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BS EN 620:2021 - TC
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