CEN TR 16829-2016 Fire and explosion prevention and protection for bucket elevators.pdf
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1、PD CEN/TR 16829:2016Fire and explosion preventionand protection for bucketelevatorsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06PD CEN/TR 16829:2016 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of CEN/TR16829:2016.Earlier gui
2、dance on protection of bucket elevators from internaldust explosions was based on large scale experimental work carriedout by the Health and Safety Laboratory and was published in the IChem E guide to dust explosions. Since then many bucket elevatorshave been fitted with explosion protection based o
3、n this advice, asa result the number of explosions in bucket elevators has reduced inrecent years. This seems likely to be the consequence of improvedcontrols over ignition sources in the elevators, as described in thisTR.The UK committee cannot see a justification for retrofitting olderelevators bu
4、ilt to I Chem E guidelines in order to meet the ventingadvice in this TR. Moreover, provided the details of an installationclosely follow that used in the HSL research, a bucket elevator fitted with vents according to the I Chem E guide, and other features as described in this TR, then it should mee
5、t the requirements of DSEAR, and the reasonably practical precautions required by theHSW Act. The Approved Code of Practice and further guidance on the Regulations can be found in HSE publication L138.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/23/1, Flame arreste
6、rs.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standa
7、rds Limited 2016ISBN 978 0 580 89235 6ICS 13.220.40; 13.230; 53.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 October 2016.Amendments/corrigenda issu
8、ed since publicationDate Text affectedPD CEN/TR 16829:2016TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 16829 August 2016 ICS 13.220.40; 13.230; 53.040.10 English Version Fire and explosion prevention and protection for bucket elevators Prvention et protection contre lincendie et lex
9、plosion des lvateurs godets Brand- und Explosionsschutz fr Becherwerke This Technical Report was approved by CEN on 13 July 2015. It has been drawn up by the Technical Committee CEN/TC 305. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
10、Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMIT
11、TEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16829:2016 EPD CEN/TR 1
12、6829:2016CEN/TR 16829:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 5 4 Bucket elevators 6 4.1 General 6 4.2 Bucket elevator types 6 5 Fire and explosion hazards 6 5.1 General 6 5.2 Explosion hazards . 7 5.2.1 Presence of explosive atmosp
13、heres . 7 5.2.2 Presence of potential ignition sources 8 5.2.3 Effect of ignition: smouldering product, fire, explosion, propagation of explosion 10 5.2.4 Risk assessment 10 5.3 Fire hazards 10 6 Fire and explosion prevention and protection of bucket elevators 11 6.1 General . 11 6.2 Fire prevention
14、 and protection . 12 6.2.1 Fire prevention . 12 6.2.2 Fire protection 12 6.3 Explosion prevention and protection . 13 6.3.1 Prevention of explosive atmospheres 13 6.3.2 Prevention of ignition sources 14 6.3.3 Protective measures . 19 7 Information for use . 19 7.1 Markings 21 Annex A (informative) E
15、xamples/types of bucket elevators . 22 Annex B (informative) Guidance on explosion venting . 28 Annex C (informative) Guidance on explosion suppression 33 Annex D (informative) Example of an ignition hazard assessment 36 Annex E (informative) Example of a nameplate . 61 Annex F (informative) Guidanc
16、e for assessing the probability of generating explosive atmospheres 62 Bibliography . 63 PD CEN/TR 16829:2016CEN/TR 16829:2016 (E) 3 European foreword This document (CEN/TR 16829:2016) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres Explosion prevention and pro
17、tection”, the secretariat of which is held by DIN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. PD CEN/TR 16829:2016CEN/TR 16829:20
18、16 (E)PD CEN/TR 16829:2016CEN/TR 16829:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 5 4 Bucket elevators 6 4.1 General 6 4.2 Bucket elevator types 6 5 Fire and explosion hazards 6 5.1 General 6 5.2 Explosion hazards . 7 5.2.1 Presence of
19、 explosive atmospheres . 7 5.2.2 Presence of potential ignition sources 8 5.2.3 Effect of ignition: smouldering product, fire, explosion, propagation of explosion 10 5.2.4 Risk assessment 10 5.3 Fire hazards 10 6 Fire and explosion prevention and protection of bucket elevators 11 6.1 General . 11 6.
20、2 Fire prevention and protection . 12 6.2.1 Fire prevention . 12 6.2.2 Fire protection 12 6.3 Explosion prevention and protection . 13 6.3.1 Prevention of explosive atmospheres 13 6.3.2 Prevention of ignition sources 14 6.3.3 Protective measures . 19 7 Information for use . 19 7.1 Markings 21 Annex
21、A (informative) Examples/types of bucket elevators . 22 Annex B (informative) Guidance on explosion venting . 28 Annex C (informative) Guidance on explosion suppression 33 Annex D (informative) Example of an ignition hazard assessment 36 Annex E (informative) Example of a nameplate . 61 Annex F (inf
22、ormative) Guidance for assessing the probability of generating explosive atmospheres 62 Bibliography . 63 PD CEN/TR 16829:2016CEN/TR 16829:2016 (E) 3 European foreword This document (CEN/TR 16829:2016) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres Explosion p
23、revention and protection”, the secretariat of which is held by DIN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. PD CEN/TR 16829:20
24、16CEN/TR 16829:2016 (E)PD CEN/TR 16829:2016CEN/TR 16829:2016 (E) 4 1 Scope This European Technical Report applies to bucket elevators that may handle combustible products capable of producing potentially explosive atmospheres of dust or powder inside the bucket elevator during its operation. The pre
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