BS EN 16750-2017 Fixed firefighting systems Oxygen reduction systems Design installation planning and maintenance《固定消防系统 氧还原系统 设计、安装、计划和维护》.pdf

1、Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenanceBS EN 16750:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16750 September 2017 ICS 13.220.20 English Versi

2、on Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance Installations fixes de lutte contre lincendie - Systmes dappauvrissement en oxygne - Conception, installation, planification et maintenance Ortsfeste Lschanlagen - Sauerstoffreduktionsanlagen -K

3、onstruktion, Einbau, Planung und Instandhaltung This European Standard was approved by CEN on 9 July 2017. 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 alterati

4、on. Up-to-date lists 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

5、 translation under 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,

6、Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR S

7、TANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16750:2017 ENational forewordThis Br

8、itish Standard is the UK implementation of EN 16750:2017.The UK participation in its preparation was entrusted to Technical Committee FSH/18/6, Gaseous Extinguishing Media and Systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication d

9、oes not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 85883 3ICS 13.220.20Compliance with a British Standard cannot confer immunity from le

10、gal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 16750:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16750 Septemb

11、er 2017 ICS 13.220.20 English Version Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance Installations fixes de lutte contre lincendie - Systmes dappauvrissement en oxygne - Conception, installation, planification et maintenance Ortsfeste Lschanlag

12、en - Sauerstoffreduktionsanlagen -Konstruktion, Einbau, Planung und Instandhaltung This European Standard was approved by CEN on 9 July 2017. 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 nat

13、ional standard without any alteration. Up-to-date lists 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 ve

14、rsion in any other language made by translation under 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,

15、 Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Unite

16、d Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1

17、6750:2017 EBS EN 16750:2017EN 16750:2017 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 System requirements . 9 4.1 General 9 4.2 Personnel safety 9 4.3 Effectiveness and application . 9 4.4 Alarm organization and emergency p

18、lan 10 5 Design . 10 5.1 Qualification of the designer 10 5.2 Fire protection concept 10 5.3 Structural specifications for the protected area . 10 5.4 Oxygen concentration . 11 5.5 Oxygen reduction to prevent fire . 11 5.6 Safety margins . 12 5.7 Oxygen reduced air quantity 16 5.7.1 Continuous oxyge

19、n reduction 16 5.7.2 Emergency plan 16 5.7.3 Oxygen reduced air 16 5.7.4 Gaseous supply 17 5.7.5 Fault signals . 17 5.8 Technical areas . 17 5.8.1 Technical area for control panel 17 5.8.2 Technical area for reduced oxygen air generation 18 6 Distribution pipework . 18 6.1 Pipework . 18 6.2 Pipe sup

20、ports . 19 6.3 Components in the pipework . 19 7 Monitoring the oxygen concentration 19 8 Alarms and notifications . 21 9 Control equipment . 21 9.1 Function . 21 9.2 Requirements 22 9.3 Electrical power supply . 22 9.4 Electrical installations 22 9.5 Data recording . 22 10 System operation . 23 10.

21、1 Instruction and training of personnel 23 10.2 Inspections . 23 10.3 Operations log . 23 10.4 Further obligations 23 BS EN 16750:2017EN 16750:2017 (E) 3 11 Maintenance . 23 12 Documentation 24 13 Installation 25 13.1 Qualification of the installer . 25 13.2 General specifications, installation 25 A

22、nnex A (normative) Ignition thresholds for oxygen reduction using nitrogen in fire prevention . 26 A.1 Ignition thresholds . 26 A.2 Tests to ascertain ignition thresholds of unfamiliar materials . 27 A.2.1 Cup burner tests 27 A.2.2 Ignition threshold tests 28 A.2.2.1 General . 28 A.2.2.2 Test criter

23、ia 29 A.2.2.3 Test documentation . 29 Annex B (informative) Information for health and safety Working in oxygen-reduction atmospheres for reasons of fire prevention . 31 B.1 General . 31 B.2 Principles of occupational health . 31 B.3 Risk classes . 31 B.4 Basic requirements, planning and installatio

24、n 32 B.5 Protective measures for all areas with oxygen-reduced atmospheres . 33 B.5.1 Structural and technical measures. 33 B.5.2 Organizational measures . 34 B.6 Risk classes and safety measures . 34 Annex C (informative) Existing national regulations for access and working in areas with lower oxyg

25、en concentration . 36 Bibliography . 37 BS EN 16750:2017EN 16750:2017 (E) 4 European foreword This document (EN 16750:2017) has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems”, the secretariat of which is held by BSI. This European Standard shall be given the status of a

26、 national standard, either by publication of an identical text or by endorsement, at the latest by March 2018, and conflicting national standards shall be withdrawn at the latest by March 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat

27、ent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cr

28、oatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tu

29、rkey and the United Kingdom. BS EN 16750:2017EN 16750:2017 (E) 5 Introduction Oxygen reduction systems are designed to prevent fires from starting or spreading, by means of the introduction of oxygen reduced air. Oxygen reduction systems are not designed to extinguish fires. The design and installat

30、ion shall be based on detailed knowledge of the protected area, its occupancy and the materials in question. It is important to suit the fire protection measures to the hazard as a whole. It is important to emphasize that across the European Union there are several regulatory and legislative limitat

31、ions for access and working in areas with lower oxygen concentration, so it is important to take these limitations into account. Use of this European Standard can vary based on the national legislation in each country of the European Union. BS EN 16750:2017EN 16750:2017 (E) 6 1 Scope This European s

32、tandard specifies oxygen reduction systems that are used as fire prevention systems by creating an atmosphere in an area which is having a lower permanent oxygen concentration as in ambient conditions. The level of oxygen reduction is defined by the individual risks of these areas (see Annex A). Oxy

33、gen reduction is achieved by technical systems which are providing a flux of air containing a reduced concentration of oxygen. This European standard specifies minimum requirements and defines the specifications governing the design, installation and maintenance of fixed oxygen reduction systems wit

34、h oxygen reduced air in buildings and industrial production plants. The standard also applies to the extension and modification of existing systems. This European standard applies to oxygen reduction systems using nitrogen which are designed for continual oxygen reduction in enclosed spaces. NOTE Ni

35、trogen is today the most suitable gas to be used for oxygen reduction. For other gases this European standard can be used as basis. This European standard does not apply to oxygen reduction systems that use water mist or combustion gases. The European standard does not apply to: explosion suppressio

36、n systems; explosion prevention systems; fire extinguishing systems using gaseous extinguishing agents; inertization of portable containers; systems in which oxygen levels are reduced for reasons other than fire prevention (e.g. steel processing in the presence of inert gas to avoid the formation of

37、 oxide film); inerting required during repair work on systems or equipment (e.g. welding) in order to eliminate the risk of fire or explosion. In addition to the conditions for the actual oxygen reduction system and its individual components this European standard also covers certain structural spec

38、ifications for the protected area. The space protected by an oxygen reduction system is a controlled and continuously monitored indoor climate for extended occupation. This standard does not cover unventilated confined spaces that may contain hazardous gases. 2 Normative references The following doc

39、uments, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 54 (all parts), Fire

40、detection and fire alarm systems EN 12094-1, Fixed firefighting systems - Components for gas extinguishing systems - Part 1: Requirements and test methods for electrical automatic control and delay devices BS EN 16750:2017EN 16750:2017 (E) 7 EN 50104, Electrical apparatus for the detection and measu

41、rement of oxygen - Performance requirements and test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Alarms 3.1.1 external alarm alarm to emergency services such as fire brigade or permanently attended location 3.1.2 local alarm acous

42、tic and possibly additional visual alarm in protected areas or their immediate surroundings 3.1.3 internal alarm acoustic and visual displays at the detection panel, possibly with additional displays at other signalling equipment 3.1.4 alarm threshold value of a process parameter which, when reached

43、, triggers an alarm and, where necessary, initiates automatic protection measures 3.1.5 alarm signal signal to warn people at risk and/or to summon help from the emergency services and/or to provide information about automatic response measures 3.2 design concentration ingnition threshold including

44、a safety margin Note 1 to entry: See also Figure 1. Note 2 to entry: The design concentration represents the maximum oxygen concentration which cannot be exceeded in any time. 3.3 emergency situation deviation from normal operation EXAMPLE For example a significant deviation from the threshold value

45、 (scale of risk). 3.4 operating pressure pressure of a system under normal operating conditions 3.5 combustible material A material capable of combustion or being ignited Note 1 to entry: For the purposes of this standard, whether the quantity of a combustible material is to be regarded as significa

46、nt or not can be determined by means of a risk analysis as part of the fire protection design. BS EN 16750:2017EN 16750:2017 (E) 8 3.6 ignition threshold maximum oxygen concentration in a mixture of a combustible material with air and inert gas, in which there can be no ignition, determined under es

47、tablished test conditions Note 1 to entry: This is a specific characteristic of combustible material and inert gas (see A.1). 3.7 detection and alarm installation remote detection system for the reliable detection of risk to people and property Note 1 to entry: It creates alarm reports from automati

48、c or manually input information, issues these and detects any faults. The transmission channels for information and alarms are monitored. Special measures are in place to prevent any malfunction as far as possible, which may be powered electrically or otherwise. Detection and alarm systems cover fac

49、ilities for the input, transmission (through wires or wirelessly), processing and issuing of alarms, including the necessary power supply. This standard applies to detection and alarm systems which detect and report the scale of the risk at an early stage. 3.8 measuring zones virtual separation of the protected volume for oxygen measuring 3.9 normal operation situation in which the equipment, protection systems and components are able to carry out their designated functions within their design parameters 3.10 oxygen reduced air ambient air with an o