000			02152nab a2200217 4500
005			20260520001114.0
008			260224s2016 xxu ing
041			_aInglés
245	0	0	_aFire Safety of Grounded Corrugating Stainless Steel Tubing in a Structure Energized by Lightning
260			_a _b _cmar. 2016
270			_a27/07/2016 ; 27/07/2016
300			_a25 p. ; 581-606
520			_aTranscripción del resúmen realizada por el autor: Corrugated stainless steel tubing (CSST) has been used for more than 20 years as a replacement for conventional black iron gas piping. CSST has a thinner tubing wall and is susceptible to damage from lightning activity when discharges enter a structure, potentially resulting in perforation of the CSST wall and fire ignition. Grounding has been promoted by CSST manufacturers as a solution to this problem. We use modeling and simulation of voltage potentials and arc currents to evaluate the effects of grounding on the voltage potential across CSST, which can result in arc initiation, and charge through the arc, which can result in melting and perforation of the CSST wall. Our results show multiple scenarios where a 10 kA 10 × 350 s current waveform with 1 OO grounding of the CSST still results in voltages greater than the arc initiation threshold of 25 kV and charge through the arc greater than 1.2 C, the perforation threshold we measured. For the case where lightning enters the structure through an outdoor light fixture or chimney, the presence of a grounding wire increases the charge through the arc from 0.13 C to 2.22 C. These results indicate that good grounding of CSST will not necessarily prevent arc initiation nor perforation of the CSST wall by lightning. Good grounding may in fact exacerbate the problem of lightning damage to CSST depending on where lightning enters the building and the electrical parameters of the path to ground.
581			_a2
773	0		_tFire Technology _g52
942			_cARTICULO
100	1		_aHaslam, Bryan _955543
100	1		_aGaller, Donald _955544
100	1		_aEagar, Thomas W. _955545
999			_c189676 _d189676