BS EN 12547:2014
$198.66
Centrifuges. Common safety requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 70 |
1.1 This European Standard applies to centrifuges for the separation or change in concentration of mixtures of liquids and solids.
It gives requirements to minimize the risks caused by the significant hazards arising during the operation of centrifuges as specified in 1.2.
1.2 This European Standard gives requirements for minimizing the risks caused by the following hazards:
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mechanical hazards common to all types of centrifuges, except those specified in 1.3;
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ergonomical hazards;
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thermal hazards;
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electrical hazards;
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noise.
1.3 Types of centrifuges and hazards excluded
1.3.1 Types of centrifuges excluded:
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centrifuges with a kinetic energy of rotation less than 200 J;
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centrifuges for household use;
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centrifuges for laboratory use according to EN 61010‑2‑020 ;
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centrifuges for forming, i.e. centrifugal hot metal casting machines.
1.3.2 Hazards excluded
This European Standard does not deal explicitly with the hazards listed below.
In cases, where such hazards might occur and could become relevant for the construction of the centrifuge, use specific standards for this hazard or make a risk assessment.
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hazards caused by overpressure or negative pressure inside the centrifuge housing;
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hazards specific to processing radioactive products;
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hazards specific to microbiological processing – including viral and parasitic hazards;
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hazards from processing corrosive and/or erosive materials;
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hazards from processes involving flammable or explosive substances;
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hazards caused by leakage of hazardous substances;
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hazards caused by unsuitable hygienic design for applications involving food products;
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inherent chemical hazards of process materials and/or service media and their biological effects on exposed persons;
Inherently hazardous substances include toxic, carcinogenic and flammable substances for example. Other substances may be hazardous because of their condition in the centrifuge, i.e. temperature, velocity and vapour pressure.
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hazards due to construction materials;
Materials used in the construction of centrifuges should not be hazardous in the condition in which they are used.
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centrifuges subject to application specific standards (e.g. EN 12505 ).
The design of centrifuges covered by EN 12547 varies to the extent that additional hazards may exist that are not covered by the requirements of this standard and is not excluded above. The manufacturer is responsible for providing suitable measures to deal with these hazards as part of a general risk assessment for the machine. Such measures are outside the scope of this standard and the direct responsibility of the manufacturer.
1.3.3 This European Standard gives guidance on the selection of performance levels according to EN ISO 13849‑1:2008 , but does not identify performance levels for specific applications.
1.4 This European Standard is not applicable to centrifuges which are manufactured before the date of its publication as EN.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 9 | 1 Scope |
| 10 | 2 Normative references |
| 12 | 3 Terms and definitions 3.1 General terms 3.2 Parts of a centrifuge |
| 13 | 3.3 Operational terms |
| 15 | 4 List of significant hazards |
| 16 | 5 Safety requirements and/or protective measures 5.1 General |
| 17 | 5.2 Mechanical hazards 5.2.1 Ejection of parts 5.2.1.1 Rotor rupture |
| 18 | 5.2.1.2 Ejection of rotor parts |
| 19 | 5.2.1.3 Ejection of stationary parts |
| 20 | 5.2.2 Ejection of high kinetic energy process material or service media 5.2.3 Dangerous movement and vibration 5.2.3.1 General 5.2.3.2 Fixing of centrifuges to foundation 5.2.4 Transportation |
| 21 | 5.2.5 Lifting 5.2.6 Access to moving parts |
| 22 | 5.3 Electrical hazards 5.3.1 Common hazards 5.3.2 Specific hazards |
| 23 | 5.3.3 Movement and vibration 5.4 Ergonomical hazards 5.5 Thermal hazards 5.6 Integrity of the safety related parts of control systems 5.6.1 Integrity of safety-related parts of control systems |
| 24 | 5.6.2 Emergency stop systems 5.7 Noise |
| 25 | 6 Verification of the safety requirements and/or protective measures 6.1 General |
| 27 | 6.2 Verification of the integrity of centrifuges 6.2.1 Verification of the mechanical integrity of centrifuges against rotor failure |
| 28 | 6.2.2 Verification that the centrifuge can withstand vibrations 6.3 Verification of effectiveness of noise control measures 7 Information for use 7.1 General 7.2 Data sheet 7.2.1 General 7.2.2 Application and operation |
| 29 | 7.2.3 Specific operating limits 7.2.4 Prohibited use 7.3 Installation instructions |
| 30 | 7.4 Instructions for operation and routine maintenance |
| 31 | 7.5 Service and repair instructions |
| 32 | 7.6 Training 7.7 Decommissioning 8 Markings, signs, written warnings 8.1 General 8.2 Name plate 8.3 Signs and warnings |
| 33 | Annex A (informative)Additional terminology A.1 Applications and types of centrifuges A.1.1 Centrifuge applications A.1.1.1 Separation machines A.1.1.2 Forming machines A.1.1.3 Other applications A.1.2 Types of centrifuges |
| 34 | A.2 Definitions |
| 35 | A.3 Other terms A.4 Illustrations A.4.1 Product flow symbols |
| 37 | A.4.2 Centrifuge components |
| 51 | Annex B (normative)Noise test code for centrifuges B.1 Scope B.2 Sound emission determination B.2.1 Sound power level B.2.2 Emission sound pressure level at workstations |
| 52 | B.3 Mounting conditions B.4 Operating conditions B.5 Information to be recorded B.6 Information to be reported |
| 53 | B.7 Determination of measurement uncertainty B.8 Declaration and verification of noise emission values |
| 55 | Annex C (informative)Static stress analysis for cylindrical baskets or bowls C.1 Validity C.2 Symbols and abbreviations |
| 56 | C.3 Material of construction |
| 57 | C.4 Method of analysis C.4.1 General C.4.2 Pressure on the shell wall |
| 58 | C.4.3 Reinforcing hoop coefficient C.4.4 Welded joint coefficient C.4.5 Perforation coefficients |
| 60 | C.5 Design conditions C.6 Permissible stress |
| 61 | Annex D (informative)Example of the design of a safety related part of the control system in accordance with EN ISO 138491:2008 D.1 General D.2 Symbols and abbreviations D.3 Risk assessment |
| 62 | D.4 Functional description |
| 63 | D.5 Calculation of the Performance Level, PL D.5.1 Component data |
| 64 | D.5.2 Mathematical basic functions D.5.3 Calculation D.5.3.1 Calculation of K4 and K6 D.5.3.2 Calculation of DC |
| 65 | D.5.3.3 Calculation of PFH Sub 1 D.5.3.4 Calculation of MTTFd Sub. 2 / Channel 1 D.5.3.5 Calculation of MTTFd Sub. 2 / Channel 2 |
| 66 | D.5.3.6 Calculation of PFH Sub. 2 / Channel 1 and Channel 2 D.5.3.7 Calculation of PFH D.6 Result of the calculation |
| 67 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive the Essential Requirements of EU Directive 2006/42/EC |
