000			02512nab a2200253 4500
005			20260520001113.0
008			260224s2016 xxu ing
041			_aInglés
245	0	0	_aFire Behaviour of Less-Combustible Dielectric Liquids in a Nuclear Facility
260			_a _b _cmar. 2016
270			_a25/07/2016 ; 25/07/2016
300			_a19 p. ; 289-308
520			_aTranscripción del resúmen realizada por el autor: Transformers, modulators and other high voltage electrical equipment are traditionally filled with mineral oil, which serves as a coolant and dielectric insulator. A rising trend is observed globally towards the adoption of less-combustible, bio-degradable transformer liquids at ever increasing voltages and power ratings. This paper presents a study of the fire behavior of five different dielectric transformer coolants: mineral oil, silicone liquid, synthetic ester, and two natural esters. Two types of tests were performed: comparative small-scale tests with two types of pans in the Cone Calorimeter (ISO 5660-1), and intermediate-scale pool fire experiments under the hood of an oxygen consumption calorimeter. The data obtained in this study are used in a fire engineering analysis of the evacuation and smoke removal from the 5900 m2 gallery in the planned European Spallation Source in Lund, Sweden. The comparative results indicate a wide range of fire properties for the tested liquids. The heat release rates calculated from the Cone Calorimeter experiments are reasonably consistent with tabulated values, except for the silicone liquid. The latter forms a crust on the liquid surface which significantly impedes combustion. Heat losses from the burning surface to cooler liquid below and pan boundaries have a significant effect on the burning behavior. These scale-dependent phenomena imply that great care should be taken in using small-scale burning data in a fire engineering analysis. Additional work is needed to gain a better understanding of the relation between small-scale tests and large-scale tests, and between the behavior of these liquids in pool fire experiments and that in real fires.
581			_a2
773	0		_tFire Technology _g52
942			_cARTICULO
100	1		_aHellebuyck, Denis H. _955489
100	1		_aVan Hees, Patrick _950852
100	1		_aMagnusson, Tommy _955490
100	1		_aJörud, Fredrik _955491
100	1		_aRosberg, Daniel _955492
100	1		_aJanssens, Marc L. _955493
999			_c189659 _d189659