000			01306nab a2200181 4500
005			20260520003916.0
008			260224s2009 xxu
245	0	0	_aAnalysis of pressure relief valve proof test data
260			_a _b _cmar. 2009
270			_a2009-03-31 ; 2009-03-31
300			_a6 p. ; 24-29
520			_aThis article reports on our statistical analysis of pressure relief valve (PRV) proof test data for the failure mode, fail-to-open, i.e., the PRV remains closed when actual pressure reaches or exceeds 150% of set pressure. Three data sets, from two Fortune 500 operating companies, which met the intent of the quality assurance of proof test data as documented by the Center for Chemical Process Safety Process Equipment Reliability Database (CCPS PERD)[Note 1] initiative, were analyzed. Although the original intent of our analysis focused solely on estimating the failure rate during the useful life[Note 2] of the equipment, it became apparent that the probability of failure on initial installation or reinstallation after proof test, and the need to address what constituted end of useful life were very significant.
581			_a1
773	0		_tProcess safety progress _g28
942			_cARTICULO
100	1		_aBukowski, Julia V. _940682
999			_c169392 _d169392