1、13.220.20; 13.220.40; 27.020 DEUTSCHE NORM Reciprocating internal combustion engines (IS0 6826 : 1997) Fire protection Mav 2000 DIN IS0 6826 ICs 13.220.20; 13.220.40; 27.020 Hubkolben-Verbrennungsmotoren - Brandschutz (IS0 6826 : 1997) This standard incorporates International Standard IS0 6826 Recip
2、rocating internal combustion engines - Fire protection. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 70. The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee). DI
3、N EN IS0 7840 and DIN EN 28846 are the standards corresponding to International Standards IS0 7840 and IS0 8846, respectively, referred to in clause 2 of the IS0 Standard. National Annex NA Standards referred to (and not included in Normative references and Annex B) DIN EN IS0 7840 Small craft - Fir
4、e-resistant fuel hoses (IS0 7840 : 1994) DIN EN 28846 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (IS0 8846 : 1990) IS0 Standard comprises 8 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN IS0 6826 : 200
5、0-0 Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Nonen). English price group 06 Sales No. 0406 09.00 Page 1 IS0 6826 : 1997 Reciprocating internal combust ion eng i nes Fire protection Contents Scope
6、Normative references Definitions Other regulations and requirements General Engine basic class . 6.1 Instructions . 6.2 Engine fill provisions . 6.3 Drain and stop valves . Engine special requirements . 7.1 Fire resistance 7.2 Protection of electrical components 7.3 Piping for flammable liquids 7.4
7、Protection of high-pressure fuel systems . 7.5 Protection of hydraulic systems 7.6 Drain valves 7.7 7.9 Protection from engine exhaust gas . 7.10 Air inlet system flame corltrol 7.11 Crankcase flame control . 7.12 Indicator cock flame control 7.13 Flexible connections in engines started by admitting
8、 air directly into the cylinders Filters for flammable liquids 7.8 High-temperature surfaces . Annexes A Format for communicating special requirements . B Bibliography . Page 2 2 2 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6 7 8 Foreword IS0 (the International Organization for Standardization) is a worl
9、dwide federation of nationas standards bodies (IS0 member bodies) . The work of preparing international Standards is normally carried out through IS0 technical committees . Each member body interested in a subject for which a technical committee has been established has the right to be represented o
10、n that committee . International organizations. governmental and non- governmental. in liaison with ISO. also take pari in the work . IS0 collab- orates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization . Page 2 IS0 6826 : 1997 Draft
11、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. International Standard IS0 6826 was prepared by Technical Committee ISO/TC 70,
12、Internal combustion engines, Subcommittee SC 5, Special requirements. This second edition cancels and replaces the first edition (IS0 6826:1982), which has been technically revised. Annexes A and B of this International Standard are for information only. 1 Scope This International Standard establish
13、es requirements for reciprocating internal combustion engines to minimize the risk of fire caused by the engine, its components and the auxiliaries fitted to it. Where necessary, special requirements can be given for particular engine applications. The requirements of this International Standard are
14、 not intended to enable an engine to operate during or after a fire. This International Standard covers reciprocating internal combustion engines for land, rail-traction and marine use, excluding engines used to propel agricultural tractors, road vehicles, road construction and earth-moving machines
15、 and aircraft. This International Standard may be applied to engines used to propel industrial trucks and small craft and for other applications where no suitable International Standard for fire protection on reciprocating internal combustion engines exist. For engine applications excluded above, th
16、is International Standard may be used as the basis for engine application standards. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were
17、valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International
18、 Standards. IS0 7840:1994, Small Craft - Fire resistant fuel hoses. IS0 8846:1990, Small Craft - Electrical devices - Protection against ignition of surrounding flammable gases. IS0 10088: 1 992, Small Craft - Permanently installed fuel systems and fixed fuel tanks. IEC 79-0:1983, Electrical apparat
19、us for explosive gas atmospheres - Part O: General requirements. 3 Definitions For the purposes of this International Standard the following definition applies. 3.1 fire resistance: Property of a component or an assembly to meet the requirements regarding stability, integrity and/or other expected q
20、ualities for fire resistance under the conditions of a standardized fire application test during a defined length of time (see 7.1). Page 3 IS0 6826 : 1997 4 Other regulations and requirements 4.1 For engines used on board ships and offshore installations which have to comply with the ruies of a cla
21、ssification society, the additional requirements of the classification society shall be observed. The classification society shall be stated by the customer prior to placing the order. For non-classed engines, additional requirements shall in each case be subject to agreement between the manufacture
22、r and customer. 4.2 If special requirements from regulations of any other authority, e.g. inspecting and/or legislative authorities, have to be met, the authority shall be the customer prior to placing the order. Any further additional requirements shall be subject to agreement between the manufactu
23、rer and customer. 5 General This International Standard provides one means of conforming with essential safety requirements and helps facilitate communication and understanding between the engine manufacturer and the customer. Application of this International Standard shall be subject to agreement
24、between the engine manufacturer and the customer (AMC). The measures required for fire protection are very different depending on the type and application of the engine. It is therefore neither necessary nor desirable for all these measures to be applied to every engine. For this reason an engine de
25、livered according to this International Standard shall comply with at least the basic class (see clause 6) of this standard. The fire protection of the engine in this case shall be designated by Fire protection IC0 6826 Where additional requirements are applied in order to provide the essential safe
26、ty requirements for a specific application (.e. special requirements specified in clause 7), these shall be specified by adding the appropriate feature codes to “IS0 6826. In this case, an engine would have all the basic class measures applied and additionally the protection measures specified in th
27、e selected feature codes. The selection of special requirements according to feature codes A, B, etc. shall be subject to AMC. For this purpose the format given in table A.l should serve for communicating special requirements. Cross reference of special requirements is given in table A.2. An example
28、 for the designation of fire protection for a specific application of un engine, complying with the basic class and additionally the special requirements (feature codes C, K and P) selected from this International Standard is: Fire protection IS0 6826-C-K-P Feature codes, e.g. C-K-P, shall be stated
29、 in alphabetic order. 6 Engine basic class The methods and the design details used to comply with the basic class features are the responsibility of the engine manufactu rer. 6.1 Instructions The manufacturer shall provide instructions for the installation (where applicable), operation and maintenan
30、ce of the engine. The instructions shall include inspection procedures to maintain the integrity of engine systems containing Page 4 IS0 6826 : 1997 flammable liquids, the features of the basic class, and all applicable special requirements. Particular attention shall be given to inspecting hose and
31、 pipe connections for thermal or vibration-induced damage. Gasoline and gas engines shall be operated in well ventilated spaces to avoid explosions in the event of fuel leakage. 6.2 Engine fill provisions The arrangements for filling engines with flammable liquids shall be such that during filling n
32、o flammable liquids are in contact with high-temperature surfaces, electrical components or rotating parts when the procedures stated in the operation manual are followed. 6.3 Drain and stop valves Drain and stop valve fittings shall be so positioned to enable easy access for operation and service.
33、7 Engine special requirements 7.1 Fire resistance 7.1.1 30 min fire resistance test (feature code: A) All components which contain flammable liquids shall withstand exposure to flame without leaking. Flexible pipes and hoses shall be tested when transporting water at 80 “C I5 OC at the maximum servi
34、ce pressure to check that they can withstand exposure to flame with a temperature of 800 “C k 50 OC for 30 min without leaking. 7.1.2 2,5 min fire resistance test (feature code: B) All components as installed, which contain flammable liquids, shall withstand exposure to free burning fuel for 2,5 min
35、 without leaking. For typical test procedures refer to IS0 7840 and IS0 10088. 7.2 Protection of electrical components (feature code: C) Electrical components for spark ignition engines shall be designed so that during operation they do not ignite surrounding flammable gases. For test procedures and
36、 requirements refer to IS0 8846. For components which shall be operational after exposure to fire and explosion, see IEC 79-0. 7.3 Piping for flammable liquids 7.3.1 Pipe design and installation (feature code: D) The design or installation of pipes shall prevent flammable liquid dripping or spraying
37、 leakage on to high- temperature surfaces, rotating parts and electrical components or into the air inlet system of compression ignition engines. EXAMPLES a) Location of fuel and lubricating oil pipes, particularly pipe joints, away from the vicinity of high-temperature surfaces, electrical componen
38、ts or air inlets. b) Local protection, shielding or reinforcement of pipes, especially small pipes such as those for pressure signal transmission. c) Suitable locking of drain valves fitted on pipes or components containing flammable liquids to prevent accidental opening. Page 5 IS0 6826 : 1997 7.3.
39、2 Pipe fittings (feature code: E) The number of detachable pipe fittings shall be limited to the necessary minimum. 7.4 Protection of high-pressure fuel systems (feature code: F) High-pressure fuel injection pipes shall be located and/or protected so that leakage does not contact high- temperature s
40、urfaces, rotating parts, electrical components and the air inlet system. Means shall be provided for the detection and drainage of leaks. 7.5 Protection of hydraulic systems (feature code: G) Hydraulic pipes with a pressure of over 60 bar shall be located and/or protected so that leakage does not co
41、ntact high temperature surfaces, rotating parts, electrical components and the air inlet system. Means shall be provided for the detection and drainage of leaks. 7.6 Drain valves (feature code: H) Valves for the draining of systems containing flammable liquids shall open manually and shall be locate
42、d so that liquids can be drained off so the liquid does not contact high temperature surfaces, rotating parts, electrical components and the air inlet system. 7.7 Filters for flammable liquids 7.7.1 Filter location (feature code: J) Filters for flammable liquids shall be located and/or protected so
43、that in case of leaks no flammable liquids shall be in contact with high-temperature surfaces, rotating parts, electrical components and the air inlet system. 7.7.2 Filter trays (feature code: K) Filter locations shall be fitted with trays and/or gutters to conduct flammable liquids spilled during s
44、ervicing, away from high temperature surfaces, rotating parts, electrical components and the air inlet system. 7.8 High-temperature surfaces (feature code: L) 7.8.1 The exhaust system and all other parts of the engine shall be cooled and/or insulated so that no external surface shall reach a tempera
45、ture at which leaking flammable liquids will ignite (autoignition temperature). Examples of autoignition temperatures are diesel fuel: 220 OC; lubricating oil: 380 OC; hydraulic oil: 380 OC; gasoline: 260 OC (evaporates at 225 OC). 7.8.2 Insulating materials shall be non-flammable and protected agai
46、nst intrusion of flammable liquids by suitable means such as sheet metal, hard sheeting or other impermeable materials. Page 6 IS0 6826 : 1997 7.9 Protection from engine exhaust gas (feature code: M) The engine exhaust system shall be fitted with a spark arrestor or otherwise be suitably designed to
47、 act as a spark arrestor. NOTE - A turbocharger may be considered to be a spark arrestor. 7.10 Air inlet system flame control 7.10.1 inlet system flame prevention (feature code: N) The engine induction system shall be designed or equipped with a flame arrestor to ensure that a fire or explosion with
48、in it will not propagate into the atmosphere surrounding the engine. 7.10.2 Inlet system fire warning (feature code: P) For spark ignition and two-stroke trunk piston compression ignition engines the engine air inlet system shall be fitted with a device to give an alarm if there is a fire in the inl
49、et system. 7.10.3 Inlet system drains (feature code: Q) Two-stroke crosshead engines shall provide the means to drain flammable liquids from the engine air inlet system if a flammable mixture can be formed in this system. 7.1 1 Crankcase flame control 7.11.1 Crankcase breather flame control (feature code: R) Crankcase breathers shall be designed or equipped with flame arrestors to ensure that a crankcase fire or explosion will not propagate into the atmosphere surrounding the engine. 7.1 1.2 Crankcase explosion relief valve flame control (feature code: S) Crankcase explosion relief valves ar
