BS EN 12845-2015 Fixed firefighting systems Automatic sprinkler systems Design installation and maintenance《固定式消防系统 自动喷水系统 设计 安装和维修》.pdf

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1、BSI Standards PublicationBS EN 12845:2015Fixed firefighting systems Automatic sprinkler systems Design, installation andmaintenanceBS EN 12845:2015Incorporating corrigendum December 2015Incorporating corrigenda December 2015 and January 2016BS EN 12845:2015 BRITISH STANDARDNational forewordThis Brit

2、ish Standard is the UK implementation of EN 12845:2015, incorporating corrigendum January 2016. It supersedes BS EN 12845:2004+A2:2009 which will be withdrawn on 31 December 2015.The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by CEN c

3、orrigendum January 2016 is indicated in the text by .This revision of EN 12845 has taken some time in development and as a result, the UK committee feels it may not reflect current sprinkler technology and practice. National Annex NA identifies some areas of concern and also provides guidance and ma

4、terial related to UK practice.A sprinkler system designed, installed and maintained in accordance with this standard is capable of providing protection of property and for the safety of people, including firefighters, should a fire occur in sprinkler-protected premises.It should be noted that this s

5、tandard no longer uses the term life safety. For the avoidance of doubt and to clarify issues that have frequently arisen, when sprinkler systems are called for to satisfy national regulations, including any references to life safety, such requirements are now found in Annex F: Additional measures t

6、o improve system reliability and availability.It is anticipated that this annex will make it clear that additional equipment and facilities are usually only necessary to enhance system response or prevent the periodic closure of protected occupancies when a sprinkler system is impaired.Attention is

7、drawn to the LPC Rules for Automatic Sprinkler Installations, which incorporate the provisions of BS EN 12845.The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed fire fighting systems, to Subcommittee FSH/18/2, Sprinkler Systems.A list of organizations represen

8、ted on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 5

9、80 93219 9ICS 13.220.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDate Text affected31 Decemb

10、er 2015 The corrigendum corrects the page numbering of National Annex NA.29 February 2016 Implementation of CEN corrigendum January 2016BS EN 12845:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12845 June 2015 ICS 13.220.20 Supersedes EN 12845:2004+A2:2009English Version Fixed firefightin

11、g systems - Automatic sprinkler systems - Design, installation and maintenance Installations fixes de lutte contre lincendie - Systmes dextinction automatique du type sprinkleur - Conception, installation et maintenance Ortsfeste Brandbekmpfungsanlagen - Automatische Sprinkleranlagen - Planung, Inst

12、allation und InstandhaltungThis European Standard was approved by CEN on 20 December 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date l

13、ists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation und

14、er the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former

15、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 and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUR

16、OPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12845:2015 EBS EN 12845:2015EN 12845:2015 (E) 2 Contents Pag

17、e Foreword . 12 Introduction 13 1 Scope . 15 2 Normative references . 15 3 Terms and definitions 16 4 Contract planning and documentation . 23 4.1 General . 23 4.2 Initial considerations 23 4.3 Preliminary or estimating stage 23 4.4 Design stage 24 4.4.1 General . 24 4.4.2 Summary schedule . 24 4.4.

18、3 Installation layout drawings 25 4.4.4 Water supply . 28 5 Extent of sprinkler protection 30 5.1 Buildings and areas to be protected. 30 5.1.1 General . 30 5.1.2 Permitted exceptions within a building 30 5.1.3 Necessary exceptions 30 5.2 Storage in the open air . 30 5.3 Fire resistant separation 30

19、 5.4 Protection of concealed spaces 31 5.5 Height difference between the highest and lowest sprinklers . 31 6 Classification of occupancies and fire hazards 31 6.1 General . 31 6.2 Hazard classes 31 6.2.1 General . 31 6.2.2 Light Hazard LH . 31 6.2.3 Ordinary Hazard OH 31 6.2.4 High Hazard HH 32 6.3

20、 Storage . 33 6.3.1 General . 33 6.3.2 Storage Configuration 33 7 Hydraulic design criteria 36 7.1 LH, OH and HHP 36 7.2 High Hazard Storage HHS . 37 7.2.1 General . 37 7.2.2 Ceiling or roof protection only 37 7.2.3 Intermediate level in-rack sprinklers 38 7.3 Pressure and flow requirements for pre-

21、calculated systems 40 7.3.1 LH and OH systems 40 7.3.2 HHP and HHS systems without in-rack sprinklers 40 8 Water supplies 42 8.1 General . 42 8.1.1 Duration . 42 8.1.2 Continuity 42 8.1.3 Frost protection 43 BS EN 12845:2015EN 12845:2015 (E) 2 Contents Page Foreword . 12 Introduction 13 1 Scope . 15

22、 2 Normative references . 15 3 Terms and definitions 16 4 Contract planning and documentation . 23 4.1 General . 23 4.2 Initial considerations 23 4.3 Preliminary or estimating stage 23 4.4 Design stage 24 4.4.1 General . 24 4.4.2 Summary schedule . 24 4.4.3 Installation layout drawings 25 4.4.4 Wate

23、r supply . 28 5 Extent of sprinkler protection 30 5.1 Buildings and areas to be protected. 30 5.1.1 General . 30 5.1.2 Permitted exceptions within a building 30 5.1.3 Necessary exceptions 30 5.2 Storage in the open air . 30 5.3 Fire resistant separation 30 5.4 Protection of concealed spaces 31 5.5 H

24、eight difference between the highest and lowest sprinklers . 31 6 Classification of occupancies and fire hazards 31 6.1 General . 31 6.2 Hazard classes 31 6.2.1 General . 31 6.2.2 Light Hazard LH . 31 6.2.3 Ordinary Hazard OH 31 6.2.4 High Hazard HH 32 6.3 Storage . 33 6.3.1 General . 33 6.3.2 Stora

25、ge Configuration 33 7 Hydraulic design criteria 36 7.1 LH, OH and HHP 36 7.2 High Hazard Storage HHS . 37 7.2.1 General . 37 7.2.2 Ceiling or roof protection only 37 7.2.3 Intermediate level in-rack sprinklers 38 7.3 Pressure and flow requirements for pre-calculated systems 40 7.3.1 LH and OH system

26、s 40 7.3.2 HHP and HHS systems without in-rack sprinklers 40 8 Water supplies 42 8.1 General . 42 8.1.1 Duration . 42 8.1.2 Continuity 42 8.1.3 Frost protection 43 BS EN 12845:2015EN 12845:2015 (E) 3 8.2 Maximum water pressure . 43 8.3 Connections for other services . 44 8.4 Housing of equipment for

27、 water supplies . 44 8.5 Test facility devices . 44 8.5.1 General . 44 8.5.2 At pump house 45 8.5.3 At control valve sets . 45 8.6 Water supply test . 45 8.6.1 General . 45 8.6.2 Storage tank and pressure tank supplies . 46 8.6.3 Town main, booster pump, elevated private reservoir and gravity tank s

28、upplies . 46 9 Type of water supply . 46 9.1 General . 46 9.2 Town mains 46 9.3 Storage tanks . 46 9.3.1 General . 46 9.3.2 Water volume . 47 9.3.3 Refill rates for full capacity tanks 48 9.3.4 Reduced capacity tanks 48 9.3.5 Effective capacity of tanks and dimensions of suction chambers 50 9.3.6 St

29、rainers . 51 9.4 Inexhaustible sources settling and suction chambers 51 9.5 Pressure tanks . 54 9.5.1 General . 54 9.5.2 Housing 54 9.5.3 Minimum capacity (water). 54 9.5.4 Air pressure and contents 54 9.5.5 Charging with air and water . 55 9.5.6 Control and safety equipment 55 9.6 Choice of water s

30、upply . 55 9.6.1 Single water supplies 55 9.6.2 Superior single water supplies 56 9.6.3 Duplicate water supplies 56 9.6.4 Combined water supplies . 56 9.7 Isolation of water supply 57 10 Pumps . 57 10.1 General . 57 10.2 Multiple pump arrangements . 57 10.3 Compartments for pumpsets . 58 10.3.1 Gene

31、ral . 58 10.3.2 Sprinkler protection 58 10.3.3 Temperature . 58 10.3.4 Ventilation 58 10.4 Maximum temperature of water supply . 58 10.5 Valves and accessories 58 10.6 Suction conditions 59 10.6.1 General . 59 10.6.2 Suction pipe . 59 10.7 Performance characteristics 62 10.7.1 Pre-calculated systems

32、 LH and OH 62 10.7.2 Pre-calculated systems HHP and HHS with no in-rack sprinklers 63 10.7.3 Calculated systems . 64 10.7.4 Pressure and water capacity of boosted town mains . 65 10.7.5 Pressure switches . 65 10.8 Electrically driven pumpsets 65 10.8.1 General . 65 BS EN 12845:2015EN 12845:2015 (E)

33、4 10.8.2 Electricity supply 65 10.8.3 Main switchboard 66 10.8.4 Installation between the main switchboard and the pump controller . 67 10.8.5 Pump controller 67 10.8.6 Monitoring of pump operation . 67 10.9 Diesel engine driven pumpsets . 67 10.9.1 General . 67 10.9.2 Engines 68 10.9.3 Cooling syst

34、em . 68 10.9.4 Air filtration 68 10.9.5 Exhaust system. 68 10.9.6 Fuel, fuel tank and fuel feed pipes 68 10.9.7 Starting mechanism . 69 10.9.8 Electric starter motor batteries . 70 10.9.9 Battery chargers . 70 10.9.10 Siting of batteries and chargers 70 10.9.11 Starter alarm indication 71 10.9.12 To

35、ols and spare parts 71 10.9.13 Engine tests and exercising 71 11 Installation type and size . 72 11.1 Wet pipe installations . 72 11.1.1 General . 72 11.1.2 Protection against freezing 72 11.1.3 Size of installations 72 11.2 Dry pipe installations . 73 11.2.1 General . 73 11.2.2 Size of installation

36、s 73 11.3 Alternate installations 73 11.3.1 General . 73 11.3.2 Size of installations 74 11.4 Pre-action installations 74 11.4.1 General . 74 11.4.2 Automatic detection system 74 11.4.3 Size of installations 75 11.5 Subsidiary dry pipe or alternate extension 75 11.5.1 General . 75 11.5.2 Size of sub

37、sidiary extensions . 75 11.6 Subsidiary water spray extension. 75 12 Spacing and location of sprinklers . 75 12.1 General . 75 12.2 Maximum area of coverage per sprinkler . 76 12.3 Minimum distance between sprinklers . 77 12.4 Location of sprinklers in relation to building construction 78 12.5 Inter

38、mediate sprinklers in HH occupancies . 84 12.5.1 General . 84 12.5.2 Maximum vertical distance between sprinklers at intermediate levels 84 12.5.3 Horizontal position of sprinklers at intermediate levels . 84 12.5.4 Numbers of rows of sprinklers at each level . 86 12.5.5 HHS intermediate sprinklers

39、in non-shelved racks . 86 12.5.6 HHS intermediate sprinklers below solid or slatted shelves in racks (ST5 and ST6) . 87 13 Pipe sizing and layout 88 13.1 General . 88 13.2 Calculation of pressure losses in pipework 88 13.2.1 Pipe friction loss . 88 13.2.2 Static pressure difference 89 BS EN 12845:20

40、15EN 12845:2015 (E) 4 10.8.2 Electricity supply 65 10.8.3 Main switchboard 66 10.8.4 Installation between the main switchboard and the pump controller . 67 10.8.5 Pump controller 67 10.8.6 Monitoring of pump operation . 67 10.9 Diesel engine driven pumpsets . 67 10.9.1 General . 67 10.9.2 Engines 68

41、 10.9.3 Cooling system . 68 10.9.4 Air filtration 68 10.9.5 Exhaust system. 68 10.9.6 Fuel, fuel tank and fuel feed pipes 68 10.9.7 Starting mechanism . 69 10.9.8 Electric starter motor batteries . 70 10.9.9 Battery chargers . 70 10.9.10 Siting of batteries and chargers 70 10.9.11 Starter alarm indi

42、cation 71 10.9.12 Tools and spare parts 71 10.9.13 Engine tests and exercising 71 11 Installation type and size . 72 11.1 Wet pipe installations . 72 11.1.1 General . 72 11.1.2 Protection against freezing 72 11.1.3 Size of installations 72 11.2 Dry pipe installations . 73 11.2.1 General . 73 11.2.2

43、Size of installations 73 11.3 Alternate installations 73 11.3.1 General . 73 11.3.2 Size of installations 74 11.4 Pre-action installations 74 11.4.1 General . 74 11.4.2 Automatic detection system 74 11.4.3 Size of installations 75 11.5 Subsidiary dry pipe or alternate extension 75 11.5.1 General . 7

44、5 11.5.2 Size of subsidiary extensions . 75 11.6 Subsidiary water spray extension. 75 12 Spacing and location of sprinklers . 75 12.1 General . 75 12.2 Maximum area of coverage per sprinkler . 76 12.3 Minimum distance between sprinklers . 77 12.4 Location of sprinklers in relation to building constr

45、uction 78 12.5 Intermediate sprinklers in HH occupancies . 84 12.5.1 General . 84 12.5.2 Maximum vertical distance between sprinklers at intermediate levels 84 12.5.3 Horizontal position of sprinklers at intermediate levels . 84 12.5.4 Numbers of rows of sprinklers at each level . 86 12.5.5 HHS inte

46、rmediate sprinklers in non-shelved racks . 86 12.5.6 HHS intermediate sprinklers below solid or slatted shelves in racks (ST5 and ST6) . 87 13 Pipe sizing and layout 88 13.1 General . 88 13.2 Calculation of pressure losses in pipework 88 13.2.1 Pipe friction loss . 88 13.2.2 Static pressure differen

47、ce 89 BS EN 12845:2015EN 12845:2015 (E) 5 13.2.3 Velocity . 89 13.2.4 Pressure loss through fittings and valves 89 13.2.5 Accuracy of calculations 90 13.3 Pre-calculated systems. 91 13.3.1 General . 91 13.3.2 Location of Design Points 91 13.3.3 Light Hazard - LH . 92 13.3.4 Ordinary Hazard - OH 93 1

48、3.3.5 High hazard - HHP and HHS (except intermediate level sprinklers) 95 13.4 Fully calculated systems 103 13.4.1 Design density . 103 13.4.2 Locations of the area of operation 104 13.4.3 Shape of the area of operation . 104 13.4.4 Minimum sprinkler discharge pressure 108 13.4.5 Minimum pipe diamet

49、ers 108 14 Sprinkler design characteristics and uses . 108 14.1 General . 108 14.2 Sprinkler types and application . 108 14.2.1 General . 108 14.2.2 Ceiling, flush, recessed and concealed pattern . 109 14.2.3 Sidewall pattern . 109 14.2.4 Flat spray pattern 109 14.3 Flow from sprinklers . 109 14.4 Sprinkler temperature ratings 110 14.5 Sprinkler thermal sensitivity 111 14.5.1 General . 111 14.5.2 Interaction with other measures 111 14.6 Sprinkler guards 111 14.7 Sprinkler water shields . 111 14.8 Sprinkler rosettes 112 14.9 Corrosion protection of spr