Qualified Life 2 : The period of time, prior to the start of a design-basis-accident, for which the equipment was demonstrated to meet the design requirements for the specified service condition
Department of Energy AREA SDMP, DOE Handbook, Glossary of Environment Safety and Health Terms, DOE-HDBK-1188-2006, D.C. 20585, USA 2006. http://www.hse.niordc.ir/uploads/86_24_dictionary_ 2006.pdf, (Envir Hlth and Sfty - Amer) {44}