ISO 19922-2005 Ships and marine technology - Fire resistance of metallic pipe components with resilient and elastomeric seals - Requirements imposed on the test.pdf

1、 Reference number ISO 19922:2005(E) ISO 2005INTERNATIONAL STANDARD ISO 19922 First edition 2005-10-01 Ships and marine technology Fire resistance of metallic pipe components with resilient and elastomeric seals Requirements imposed on the test bench Navires et technologie maritime Rsistance au feu d

2、es composants de tuyaux mtalliques avec joints lastiques ou lastomres Exigences imposes au banc dessai ISO 19922:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the type

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6、ocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Swi

7、tzerland ii ISO 2005 All rights reservedISO 19922:2005(E) ISO 2005 All rights reserved iii Contents 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 4.2 Burner chamber 2 4.3 Aggregate box. 2 4.4 Monitori

8、ng and recording 3 4.5 Pressure-producing equipment 4 Bibliography . 7 ISO 19922:2005(E) iv ISO 2005 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St

9、andards 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, in liaison with ISO, also

10、 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 task of technical committee

11、s 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. Attention is drawn to the possib

12、ility 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, Piping and machinery. ISO 199

13、22:2005(E) ISO 2005 All rights reserved v Introduction 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

14、reproducible 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 t

15、o test 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

16、a type 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

17、test. In 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

18、. INTERNATIONAL STANDARD ISO 19922:2005(E) ISO 2005 All rights reserved 1 Ships 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 Inter

19、national Standard, working pressures up to 1 MPa (10 bar) 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 particula

20、r by tests according to ISO 19921. 2 Normative references 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)

21、applies. ISO 10012, Measurement management systems Requirements 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 definit

22、ions For the purposes of this document, the following terms 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

23、standard fire-resistance test 4 Requirements 4.1 Components 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 conditionin

24、g and controlling the test medium (see 4.3); equipment for 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). ISO 19922:2005(E) 2

25、 ISO 2005 All rights reserved4.2 Burner chamber 4.2.1 General The holder of the test 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

26、from bottom to top shall be provided. The base area of the air supply shall be approximately 0,6 m 2 . 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

27、 least 20 mm on all sides of the test piece such that the test piece is completely enclosed 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 10 2m 2 . Each single-area burner unit shall

28、be provided with a mixing fitting for mixing the gas and the combustion air, creating a neutral 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

29、. The burner shall be variable in height in order that test pieces of all possible nominal diameters can be enveloped by the flame. The temperature measured 15 mm + 5 0mm 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

30、 an exhaust fan. The fan shall be fitted with continuously variable speed control. The upward 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 me

31、asuring instruments shall be provided in the coolant supply and drain line. 4.3 Aggregate box 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

32、to W 0,1 m/s. The installation shall provide for an adjustable working pressure, with a minimum 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 MP

33、a (12 bar). ISO 19922:2005(E) ISO 2005 All rights reserved 3 4.4 Monitoring and recording 4.4.1 Control and adjustments The 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 refere

34、nce in Figure 1 Parameter Range Remarks a and b water temperature at test piece, inlet: 80 C 2 C, at test piece, outlet: max. 85 C c flame temperature 800 C 50 C Temperature 15 mm + 5 0mm below test piece d flow rate of water The flow rate of water shall be large enough for the requirements imposed

35、on the temperature of the throughput medium to be met e working pressure of water up to 1 MPa (10 bar), max. deviation: 10 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 recordi

36、ng Test parameters shall be measured, recorded and indicated as detailed in Table 2. Table 2 Parameter recording requirements 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 temp

37、erature below centre of test piece X d volume flow rate of water X e working pressure during test X f test duration Additional 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 te

38、st bench. The net calorific value of the used gas and the computation of heat consumption shall be recorded. ISO 19922:2005(E) 4 ISO 2005 All rights reservedThe instruments shall correspond to following precision classes, or have the following tolerances: Pressure gauges: 1,0 % of max. scale value.

39、Electrical measuring instruments: Class 1 in accordance with IEC 60051-1. Non-electrical measuring instruments: 1,0 % of max. scale value. The survey of 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

40、.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 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 te

41、st 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 closing 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 evac

42、uation 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 valve. 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. Aft

43、er 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 flooded 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 est

44、ablished 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-producing equipment Pressure-producing equipment, which can load the test piece with an internal working pressure up to its test pressure according to

45、 a standard or other specification at the end of the flame application, shall be provided. This pressure-producing equipment can be arranged outside the actual test bench. ISO 19922:2005(E) ISO 2005 All rights reserved 5Key 1 test piece 2 exhaust gas trunk 3 exhaust fan 4 mixing valve 5 sectional ar

46、ea 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 of test piece. dFlow rate of water. eWorking pressure during test. fTest duration. gExhaust gas. hGas. iCombustion a

47、ir. jAir supply. Figure 1 Diagram of test bench and burner chamber ISO 19922:2005(E) 6 ISO 2005 All rights reservedKey 1 test piece 2 exhaust gas trunk 3 exhaust fan 4 mixing valve 5 sectional area burner 6 throttle valve 7 burner support 8 drip tray for water, residues of combustion 9 view window 1

48、0 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 burne

49、r. lPosition of sectional area burner while adjusting flame temperature. mExample of burner arrangement: six burner units forming two different burner sectional areas. Figure 2 Example of a burner chamber ISO 19922:2005(E) ISO 2005 All rights reserved 7 Bibliography 1 ISO 19921, Ships and marine technology Fire resistance of metallic pipe components with resilient and elastomeric seals Test methods 2 ISO 2768-1, General tolerances Part 1: Tolerances