1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 16437:2012Ships and marine technology Lifesaving and fire protection Atmospheric oil mist detectors for shipsBS ISO 16437:2012 BRITISH STANDARDNational forewordThis Britis
2、h Standard is the UK implementation of ISO 16437:2012. The UK participation in its preparation was entrusted to TechnicalCommittee SME/32/-/1, Lifesaving and fire protection.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not pu
3、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 74873 8 ICS 13.220.20; 47.020.01 Compliance with a British Standard cannot confer immunity fro
4、m legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate Text affectedBS ISO 16437:2012 ISO 2012Ships and marine technology Lifesaving and fire protection Atmospheric oil mis
5、t detectors for shipsNavires et technologie maritime Sauvetage et protection contre le feu Dtecteurs de brouillard dhuile atmosphriques pour naviresINTERNATIONAL STANDARDISO 16437First edition 2012-07-01Reference number ISO 16437:2012(E)BS ISO 16437:2012ISO 16437:2012(E)ii ISO 2012 All rights reserv
6、edCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address
7、below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16437:2012ISO 16437:2012(E) ISO 2012 All rights reserved iiiContents PageFore
8、word ivIntroduction v1 Scope 12 Normative references . 13 Terms and definitions . 24 Requirements . 34.1 General . 34.2 Compliance . 44.3 Detector calibration 44.4 Cleaning alarm . 44.5 Indicating devices . 44.6 Individual detector indicators 44.7 Connection of ancillary devices 54.8 Monitoring of d
9、etachable detectors 54.9 Manufacturers adjustments . 54.10 On-site adjustment of response behaviour . 54.11 Response to slow increases of oil mist concentrations . 54.12 Marking . 64.13 Instruction manual 64.14 Data . 74.15 Requirements for software-controlled detectors . 74.16 Monitoring of memory
10、contents optional function . 84.17 Additional requirements for aspirating detectors 85 Test methods 105.1 General .105.2 Repeatability .135.3 Dry heat (operational) .135.4 Cold (operational) 145.5 Damp heat .155.6 Vibration, sinusoidal (operational) .165.7 High voltage 175.8 Variation of supply para
11、meters .185.9 Electrical power supply failure 195.10 Insulation resistance .195.11 Electrostatic discharge immunity 205.12 Radiated radio frequency immunity 215.13 Conducted low frequency immunity 215.14 Conducted high frequency immunity 225.15 Burst/fast transient immunity .235.16 Surge immunity te
12、st .245.17 Additional tests for aspirating detectors 266 Installation .277 Test report .27Annex A (normative) Calibration for master detector and/or functional test for product detector 28Annex B (informative) Example of an alternative test method for the product detectors 34Annex C (informative) Ex
13、ample of an oil mist generator .38Annex D (informative) Location and installation of atmospheric detectors .40Bibliography .44BS ISO 16437:2012ISO 16437:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).
14、 The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-
15、governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2
16、.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a v
17、ote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 16437 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
18、SC 1, Lifesaving and fire protection.iv ISO 2012 All rights reservedBS ISO 16437:2012ISO 16437:2012(E)IntroductionThe majority of fires which have occurred in engine rooms are generally caused by a leak or fracture from a flammable liquid system. Most engine room fires begin as a result of the ignit
19、ion of oil mist. The mist can be formed in one of two ways: when oil mist is generated through minute leaks in oil lines which, under pressure, give off a very fine atomized spray: and, when oil hits a hot surface and boils, generating a mist.Detection at this stage could therefore provide a pre-ala
20、rm warning to the risk of fire. Oil mist detection systems are available to continuously monitor the machinery space atmosphere. They can give early warning of a dangerous onset of oil mist accumulation and can be incorporated in arrangements to automatically shut down valves, machinery, etc., to pr
21、event the outbreak of fire.For this purpose, atmospheric oil mist detection systems should be installed where an identified risk of fire hazard exists from the potential generation of oil mist from flammable liquids such as hydraulic, fuel and lubricating oil systems. Oil mist detection systems are
22、particularly useful in engine rooms, oil purifying rooms, and hydraulic pump rooms on board ships, as well as fixed and floating offshore hydrocarbon platforms.This International Standard has been developed for oil mist detectors on board ships and specifies the requirements for detectors used to de
23、tect volatile mist that can result in a fire. It is based on the document Guidelines for the manufacture and installation of oil mist detectors prepared by the International Maritime Organization (IMO) sub-committee on fire protection (FP). ISO 2012 All rights reserved vBS ISO 16437:2012BS ISO 16437
24、:2012Ships and marine technology Lifesaving and fire protection Atmospheric oil mist detectors for ships1 Scope1.1 This International Standard specifies requirements, test methods and performance criteria for resettable oil mist detectors for use in fire hazard alarm systems installed on marine vess
25、els. Oil mist detectors may be installed where an identified risk of fire caused by ignition of flammable liquids, such as hydraulic, fuel and lubricating oil systems, exists.1.2 This International Standard specifies requirements for the following detectors: point type detectors employing a point as
26、pirating sampling device or relying on dispersion of oil mist; aspirating detectors, whereby the sampling point is separated from the sensing unit(s) and uses a pipe network for carrying the sampling air to the sensing unit(s); open path or beam type detectors, whereby the concept of the point detec
27、tor is expanded to a sampling path which can be 20 m or more, as opposed to a few centimetres in the point type detector.1.3 For the testing of other types of detector working on different principles, this International Standard is only for guidance. Detectors with special characteristics and develo
28、ped for specific risks, as well as those designed for use in explosive atmospheres, are not covered by this International Standard.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. Fo
29、r undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7240-2, Fire detection and alarm systems Part 2: Control and indicating equipmentISO 7240-4, Fire detection and alarm systems Part 4: Power supply equipmentIEC 60068-1, Environmental testing Pa
30、rt 1: General and guidanceIEC 60068-2-1, Environmental testing Part 2-1: Tests Test A: ColdIEC 60068-2-2, Environmental testing Part 2-2: Tests Test B: Dry heatIEC 60068-2-6, Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal)IEC 60068-2-30, Environmental testing Part 2-30: Tests T
31、est Db: Damp heat, cyclic (12 h + 12 h cycle)IEC 61000-4-2, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity testIEC 61000-4-4, Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/
32、burst immunity testIEC 61000-4-5, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity testIEC 61000-4-6, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fieldsI
33、NTERNATIONAL STANDARD ISO 16437:2012(E) ISO 2012 All rights reserved 1BS ISO 16437:2012ISO 16437:2012(E)EN 50086-1:1994, Specification for conduit systems for cable management Part 1: General requirements3 Terms and definitionsFor the purposes of this document, the following terms and definitions ap
34、ply.3.1alarm set point(s)oil mist density in the proximity of the specimen at the moment that it generates an alarm signal, when tested as specified in 5.1.63.2aspirating detectorsampling device which consists of a pipe network and sampling point which is separated from the sensing unit(s)NOTE Sampl
35、ing air and aerosols are drawn through the sampling device, using the pipe network, and carried to one or more sensing elements by an integral aspirator (e.g. fan or pump). Each sensing element may contain more than one sensor exposed to the same air.3.3conditioningexposure of a specimen to environm
36、ental conditions to determine the effect of such conditions on the specimen3.4fault indicationaudible, visible or other type of output different from an alarm signal conveying, directly or indirectly, a warning or indication that the detector is not working satisfactorily3.5gravimetric deterministic
37、 methodprocess where the difference in weight of a 0,8 m pore size membrane filter is ascertained from weighing the filter before and after drawing one litre of oil mist from the test chamber3.6lower explosive limitvolume concentration of oil mist, flammable gas or vapour in air, below which the mix
38、ture is not explosiveNOTE 1 Also referred to as the lower flammable limit (LFL).NOTE 2 The lower explosive limit corresponds to an oil mist concentration of approximately 50 mg/l.3.7minimum flow rateminimum flow rate claimed by the manufacturer as meeting the requirements of this International Stand
39、ard3.8non-volatile memorymemory elements which do not require the presence of an energy source for the retention of their contents3.9point type detectorpoint sampling device, sensor type, which operates by aspirating or relying on dispersion of oil mist3.10recoverytreatment of a specimen, after cond
40、itioning, so that the properties of the specimen can be stabilized before measurement of the said property as required by this International Standard2 ISO 2012 All rights reservedBS ISO 16437:2012ISO 16437:2012(E)3.11repeatabilitycloseness of agreements between the results of successive measurements
41、 of the same value of the same quantity carried out by the same method, with the same measuring instruments, by the same observer, in the same laboratory within a quite short interval of time in unchanged conditions3.12sampling devicecomponent or series of components or dedicated device (e.g. a pipe
42、 network, dedicated duct, probe or hood) which transfers samples of air to the oil mist sensing element(s)3.13sampling pointpoint at which an air sample is drawn into the sampling device3.14sensitivity adjustmentadjustment during or after commissioning which leads to a change in the response to oil
43、mist density3.15site-specific detector dataalterable data required for the detector to operate in a defined detector configuration3.16transport timetime for aerosols to transfer from a sampling point to the oil mist sensing element4 Requirements4.1 General4.1.1 The detector shall reliably measure th
44、e oil mist concentration under the stated application conditions, produce an alarm signal and, if applicable, shall be able to initiate external alarm and protective actions, whenever the level exceeds or falls below a pre-selected alarm concentration.4.1.2 Detector parts shall be able to withstand
45、the stresses due to vibration, dust, corrosive media and climatic influences during normal use. 4.1.3 Materials and components shall be used within the ratings or limits specified by the material or component manufacturer, unless otherwise specified by appropriate safety standards taking into accoun
46、t the limits of specific operating conditions.4.1.4 Materials that come into contact with the oil mist shall not affect the measured value in milligrams per litre for the oil mist.4.1.5 Detectors shall be constructed to facilitate easy access for regular function checks and calibration, and allow pe
47、riodic maintenance of serviceable parts and cleaning of sensing surfaces.4.1.6 The oil mist path of the detector, including any filter and sampling device, shall not be affected by gases expected to be present in the environment.4.1.7 Any zero-point and gain adjustments shall be independent of each
48、other.4.1.8 Detectors with more than one measuring range shall clearly identify the selected range. ISO 2012 All rights reserved 3BS ISO 16437:2012ISO 16437:2012(E)4.1.9 This International Standard is drafted on the basis of functions which are required to be provided on all oil mist detectors, and
49、optional functions with requirements which may be provided. It is intended that the options will be used for specific applications, as recommended in application guidelines.4.1.10 Each optional function is included as a separate entity with its own set of associated requirements in order to permit oil mist detectors on board ships with different combinations of functions to conform to this International Standard. If an option is taken, all the corresponding requirements shall be met.4.1.11 Ot
