System boundaries according to decision scope a concept of focal zones

Enhancing the Application Efficiency of Life Cycle Assessment for Industrial Uses

“…The associated process of system boundary selection and limitation, which is mainly carried out in the goal and scope definition, is thus defined as 'macro boundary selection'. This type of system boundary selection, while using a different terminology, is discussed for instance by [Trinius and Le Téno 1999]. The associated questions have triggered research with the involvement of the author (see [Rebitzer et al 2003c;Braune et al 2005].…”