Classification of Hazard and Risk of Fire - Essay Example

BS EN (ISO) 1716 Calorific Value Test Gross calorific probable test EN ISO 1716 is employed in the determination the prevailing prospective total heat release of a product when consumed wholly. A powdery test specimen is normally kindled within pressurized oxygen atmosphere inside a calorimetric bomb, which is normally enclosed by water jacket. The gross calorific potential and measured in terms of MJ/kg or MJ/m2 (Bett, Frith & James, 145-178). It postulates a method for fortitude of the gross heat of combustion of any products at a continual volume within a bomb calorimeter. In case a non-homogeneous product cannot be determined then its constituents is normally provided unconnectedly. BS EN ISO 1760 is utilized in the determination of potential maximum total heat release of any product when completely burning without taking into consideration its final use. The test is normally applicable for the classes A1, A2, A1fl and corresponding A2fl. BS EN ISO 1716 tests results normally correlate to the behavior of the test specimens of a product under the particular conditions of the test and are not intended to be the only criterion of assessing the potential fire hazard of the product in use. The Cone Calorimeter Test Conversely, cone calorimeter performance is mainly based bench scale fire testing apparatus which detects forced flaming conditions thus stimulating growth of fire with extremely small specimen size. Comparison of results given by the CC and corresponding FRPT normally leads FCRC to conclude that the cone calorimeter can never by utilized in the determination of the critical heat flux since it is measured within the FRP (Bett, Frith & James, 145-178).Heat release is a fundamental measurement demanded to examination the fire advancement of materials and products. Quantitative heat release measurements offer information that is theoretically important for designing of either electrical or optical cables or corresponding product advancement. A radiant exposure is utilized as an energy source in the cone calorimeter method and the source of heat is utilized in the process of comparison with the heat release rate and corresponding flame spread of insulating materials built into the cables when consuming within a vertical cable tray configuration. It is important to note that it is extremely cumbersome to determine value of the heat release in BS EN ISSO 1716 test method. Cone calorimeter test method is not utilized in the determination of the net heat of combustion as in the case of BS EN ISO 1716 test method. Classification of hazard and risk of fire according to 1716 test Hazard and risk is mainly classified in A1 and A2 in regard to the wall and ceiling lining product. Performance criteria pertain to the reaction to fire can solely be content by fire test stipulated by the British Standards terms and corresponding European consistent fire tests. Classification utilizing test data from the reaction to fire tests in accordance to the European classification categorize BS EN ISO 1716 Reaction to fire tests for constructing products and determination of the underlying heat combustion. Material is normally classified under A1 when it is tested in accordance with the BS EN ISO: 1716: 2002 or material can also be classified under A1 when tested in accordance with BS EN ISO: 13823: 2002 and BS EN ISO: 1182: 2002 or BS EN ISO: 1716: 2002. Material is normally certified under the risk of non-combustible in regard to the prevailing test specified within the BS 476: part 4:1970 throughout. Non-combustible risk refer to materials that does not produce flame the specimen furnace thermocouples in regard to the test detailed in the BS 476: Part 11: 1982 (1988). Products that are made from more than one material are normally considered to be in Class A1 without testing in regard to the definition within the Commission Decision 96/603/EC of the 4th October 1996 utilized in the establishment of the list of the underlying products categorize under the Class A1. Class A1 specify that no contribution to fire is offered for the purpose of decision 94/611/EC EXECUTING Article 20 of the Council Directive 89/106/EEC on the prevailing construction products. Low risk classification by 1716 test pertains to the surface material where it is purely bonded throughout the underlying substrate and corresponding material combination of the substrate found within the class 1. Classification of material is normally accomplished by considering B-s3 and d2 when mainly subjected to testing in accordance with BS EN ISO 1716:2002 and corresponding BS EN ISO: 11925-2: 2002. High risk material according to 1716 test refers to material of the wall and ceiling when subjected to testing of the BS 476: part 7: 1987 obtains in a Class 2 and 3 surface spread of the flame. Such material is normally realized under classification of the D-s3 and d2 in accordance with the underlying BS EN ISO 1716 and BS EN: 13823: 2002. Nevertheless, extremely high risk material possesses no recommended performance. BS EN (ISO) 1716 Calorific Value Test aids in the development of fire in regard to the ease of ignition, energy produced and corresponding flame spread. Helpfulness and its limitations for fire safety cognizant building designers Design process attempt in satisfying a series of objectives and in searching of physical solution to set of problem. Fire safety is considered to cover both the safety of the populace and property within the building and surrounding locations. Fire safety in regard to building designers is normally relevant in curbing variations and combinations of principles that is in the fire safety design of the hospitals maintenance of the services in order to avoid consequential loss of life due to postponed operations and treatment. Conversely, fire safety conscious building designers in regard to the two principal products of combustion relate to the objectives that are subjected to crude terms. Conclusion Gross calorific probable test EN ISO 1716 is employed in the determination the prevailing prospective total heat release of a product when consumed wholly. It is computed on the foundation of the prevailing temperature increase, specimen mass and corresponding modification factors associated to the particular test preparation utilized. Cone calorimeter performance is mainly based bench scale fire testing apparatus which detects forced flaming conditions thus stimulating growth of fire with extremely small specimen size. Bibliography Bett, George, Frith Hoehnke, and James Robison. The Scottish Building Regulations: Explained and Illustrated. Oxford: John Wiley & Sons, 2007. The Building Regulations 2000. London: TSO, 2000. Print. Read More