BS ISO 19922-2006 Ships and marine technology - Fire resistance of metallic pipe components with resilient and elastomeric seals - Requirements on the test bench《船舶和海上技术 带回弹性和弹性密封件.pdf

1、BRITISH STANDARDBS ISO 19922:2005Ships and marine technology Fire resistance of metallic pipe components with resilient and elastomeric seals Requirements imposed on the test benchICS 47.020.30; 47.020.99g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g

2、3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 19922:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2006 BSI 31 January 2006ISBN 0 580 47360 0National forewordThi

3、s British Standard reproduces verbatim ISO 19922:2005 and implements it as the UK national standard.The UK participation in its preparation was entrusted by Technical Committee SME/32, Ships and marine technology, to Subcommittee SME/32/3, Piping and machinery, which has the responsibility to: A lis

4、t of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspo

5、ndence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of i

6、tself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and pr

7、omulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since

8、 publicationAmd. No. Date CommentsReference numberISO 19922:2005(E)INTERNATIONAL STANDARD ISO19922First edition2005-10-01Ships and marine technology Fire resistance of metallic pipe components with resilient and elastomeric seals Requirements imposed on the test benchNavires et technologie maritime

9、Rsistance au feu des composants de tuyaux mtalliques avec joints lastiques ou lastomres Exigences imposes au banc dessai BS ISO 19922:2005ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Requirements 1 4.1 Components of test bench 1 4

10、.2 Burner chamber 2 4.3 Aggregate box. 2 4.4 Monitoring and recording 3 4.5 Pressure-producing equipment 4 Bibliography . 7 BS ISO 19922:2005iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pr

11、eparing 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-governmental, i

12、n 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. The main tas

13、k 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 vote. Attentio

14、n 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 19922 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee SC 3, Pipin

15、g and machinery. BS ISO 19922:2005vIntroduction This International Standard does not apply to components for use in piping systems made of plastic. Such components may be tested in accordance with IMO Resolution A.753 (18), Guidelines for the application of plastic pipes on ships. Tests with reprodu

16、cible results are possible with the test bench specified in this International Standard for the determination of fire resistance of metallic pipe components containing a resilient or elastomeric seal. As a consequence of the connecting arrangement of the test pieces, it is possible not only to test

17、the fire resistance of the pipeline components systems but also the connection between the pipeline and pipeline component, which may be critical. The requirement for a burner that covers a wide area and generates flames that envelop the pipeline component under test was intended to simulate a type

18、of flame found in practice. The limited working pressure of 1 MPa (10 bar) and the requirement for a non-flammable test medium (water) were implemented in order to ensure the safety of operating personnel as well as to protect the test bench in case damage occurs at the test piece during the test. I

19、n case of a request for a flame test under different test conditions, e.g. flame temperature, working pressure or duration of flame application, the test is carried out in accordance with this International Standard and in accordance with ISO 19921, but under the specific conditions requested. BS IS

20、O 19922:2005blank1Ships and marine technology Fire resistance of metallic pipe components with resilient and elastomeric seals Requirements imposed on the test bench CAUTION During exposure to flames using the test bench specified in this International Standard, working pressures up to 1 MPa (10 bar

21、) are possible within the piping system. 1 Scope This International Standard specifies requirements on a test bench for determining the fire resistance of metallic pipeline components containing a resilient or elastomeric material, in particular by tests according to ISO 19921. 2 Normative reference

22、s The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 10012, Measurement management systems Requi

23、rements for measurement processes and measuring equipment IEC 60051-1, Direct acting indicating analogue electrical measuring instruments and their accessories Part 1: Definitions and general requirements common to all parts 3 Terms and definitions For the purposes of this document, the following te

24、rms and definitions apply. 3.1 fire resistance ability of an element of construction, component or structure to fulfil for a stated period of time the required stability, integrity, thermal insulation and/or other expected duty specified, in a standard fire-resistance test 4 Requirements 4.1 Compone

25、nts of test bench The test bench shall consist of the following components (see Figures 1 and 2): burner chamber with connecting device for the test piece, burner and trunk for exhaust gas (see 4.2); aggregate box with equipment for conditioning and controlling the test medium (see 4.3); equipment f

26、or monitoring and recording the test procedure (see 4.4); pressure-producing equipment which can load the test piece at the end of flame application with a test pressure as specified in the technical specification (see 4.5). BS ISO 19922:20052 4.2 Burner chamber 4.2.1 General The holder of the test

27、piece shall be arranged to an operation height (e.g. 1 100 mm). Agreement must be reached between the client and operator of the test bench on how the test piece will be attached to the test bench. A steady airflow from bottom to top shall be provided. The base area of the air supply shall be approx

28、imately 0,6 m2. An example arrangement of a burner chamber is given in Figure 2. 4.2.2 Burner The total burner sectional area shall be at least 150 mm 500 mm. However, the burner shall be large enough to extend at least 20 mm on all sides of the test piece such that the test piece is completely encl

29、osed by the flames. The sectional area may consist of several single-area burner units. Burners used shall be of the fan-assisted type with a minimum of 20 nozzles per 102m2. Each single-area burner unit shall be provided with a mixing fitting for mixing the gas and the combustion air, creating a ne

30、utral flame of 800 C 50 C below the pipeline component under test. When adjusting the flame, the burner area must be moveable in such a way that the test piece which has been fitted is not exposed to the flames. The burner shall be variable in height in order that test pieces of all possible nominal

31、 diameters can be enveloped by the flame. The temperature measured 15 mm + 50mm directly under the test piece shall be 800 C 50 C. 4.2.3 Exhaust gas trunk The exhaust gas shall be drawn off upwards by means of an exhaust fan. The fan shall be fitted with continuously variable speed control. The upwa

32、rd airflow shall produce a directed flame. Environmental restrictions according to local law shall be taken into consideration. 4.2.4 Coolant circuit For controlling the coolant circuit, shut-off valves and measuring instruments shall be provided in the coolant supply and drain line. 4.3 Aggregate b

33、ox Heating and cooling arrangements shall be provided for supplying the test piece with water of 80 C 2 C at the test-piece inlet. The velocity of flow of the test medium in the test piece shall be adjustable to W 0,1 m/s. The installation shall provide for an adjustable working pressure, with a min

34、imum required pressure of 500 kPa (5 bar) adjustable up to 1 MPa (10 bar) during the fire test, with the test piece fitted. For safety reasons, the design pressure of the piping system shall be at least 1,2 MPa (12 bar). BS ISO 19922:200534.4 Monitoring and recording 4.4.1 Control and adjustments Th

35、e parameters listed in Figure 1 and Table 1 shall be controllable or adjustable in the given range via suitable means. Table 1 Parameter control and adjustment ranges Item reference in Figure 1 Parameter Range Remarks a and b water temperature at test piece, inlet: 80 C 2 C, at test piece, outlet: m

36、ax. 85 C c flame temperature 800 C 50 C Temperature 15 mm + 50mm below test piece d flow rate of water The flow rate of water shall be large enough for the requirements imposed on the temperature of the throughput medium to be met e working pressure of water up to 1 MPa (10 bar), max. deviation: 10

37、kPa ( 0,1 bar)Working pressure selectable; deviation limit applies to pressure selected f test duration max. 9 999 s Stop at end of test or interruption 4.4.2 Parameter recording Test parameters shall be measured, recorded and indicated as detailed in Table 2. Table 2 Parameter recording requirement

38、s Item reference in Figure 1 Parameter Measurement, recording and indication a water temperature at test piece, inlet X b water temperature at test piece, outlet X c flame temperature below centre of test piece X d volume flow rate of water X e working pressure during test X f test duration Addition

39、al measuring instruments, e.g. for gas consumption, and signal bulbs for going above and below permitted temperatures, pressures, etc. may be provided by the operator of the test bench. The net calorific value of the used gas and the computation of heat consumption shall be recorded. BS ISO 19922:20

40、054 The instruments shall correspond to following precision classes, or have the following tolerances: Pressure gauges: 1,0 % of max. scale value. Electrical measuring instruments: Class 1 in accordance with IEC 60051-1. Non-electrical measuring instruments: 1,0 % of max. scale value. The survey of

41、the testing equipment shall be carried out according to an admitted quality control system, e.g. according to ISO 10012. 4.4.3 Safety equipment 4.4.3.1 Requirements The following requirements apply to the test bench set-up. a) A thermo-electrical ignition safety feature shall protect the gas supply

42、to the burner. The gas supply to the burner shall automatically be switched off when the flame extinguishes by itself; the pressure drops in the test piece; the test box is opened; the gas exhaust is insufficient; an emergency stop occurs. b) In case of switching off for safety reasons, quick closin

43、g valves shall cut off at the test piece inlet and outlet. The circuit pressure shall be released. c) In case the test piece is destroyed, the evacuation of leakage water from the burner shall be ensured. d) The working pressure in the water circuit shall be limited to 1,1 MPa (11 bar) by a safety v

44、alve. 4.4.3.2 Test The conditions specified in 4.4.3.1 a) for a switch-off of the gas supply shall be set. The gas supply shall be interrupted. After all switching off according to 4.4.3.1 a), proof shall be established that the requirements according to 4.4.3.1 b) are met. The burner shall be flood

45、ed once, while the gas supply is switched off. Proof shall be established that the water is evacuated as required in 4.4.3.1 c). Proof shall be established that the working pressure safety valve limits the working pressure in the system to 1,1 MPa (11 bar) as required in 4.4.3.1 d). 4.5 Pressure-pro

46、ducing equipment Pressure-producing equipment, which can load the test piece with an internal working pressure up to its test pressure according to a standard or other specification at the end of the flame application, shall be provided. This pressure-producing equipment can be arranged outside the

47、actual test bench. BS ISO 19922:20055Key 1 test piece 2 exhaust gas trunk 3 exhaust fan 4 mixing valve 5 sectional area burner 6 water tank with heating/cooling 7 pump for pressure test aWater temperature at test piece, inlet. bWater temperature at test piece, outlet. cFlame temperature below centre

48、 of test piece. dFlow rate of water. eWorking pressure during test. fTest duration. gExhaust gas. hGas. iCombustion air. jAir supply. Figure 1 Diagram of test bench and burner chamber BS ISO 19922:20056 Key 1 test piece 2 exhaust gas trunk 3 exhaust fan 4 mixing valve 5 sectional area burner 6 throt

49、tle valve 7 burner support 8 drip tray for water, residues of combustion 9 view window 10 diffuser aWater temperature at test piece, inlet. bWater temperature at test piece, outlet. cFlame temperature below centre of test piece. dFlow rate of water. eWorking pressure during test. fTest duration. gExhaust gas. hGas. iCombustion air. jAir supply. kWorking position of sectional area burner. lPosition of sectional area burner while adjusting flame temperature. mExample of burner arrangement: six burner units f