This chapter addresses aspects that are related to life cycle stage B. The aspects of this chapter all provide provisions, rules and guidance for the goal and scope definition and the inventory analysis steps according to [ISO 14040] and [ISO 14044].

The following list describes the addressed aspects in Module B.

7      Aspects concerning Module B – Use stage

• 7.2  Module B1 – Use.
• B-01 Emissions of dangerous substances to indoor air during the use stage.
• B-02 Release of dangerous substances to soil and water during the use stage.
• 7.3  Module B2 – Maintenance.
• B-03 Maintenance – product LCA.
• 7.4  Module B3 – Repair
• B-04 Repair – product LCA”
• B-05 Products within complex systems
• 7.5  Module B4 – Replacement
• B-06 Definition of the service life of a building product
• B-07 Replacement frequency.
• 7.6  Module B5 – Refurbishment
• 7.7  Module B6 – Operational energy use.
• B-08 Modelling of energy use.
• 7.8  Module B7 – Operational water use.
• B-09 Modelling of water use.
• B-10 Accounting of different types of waste water treatment
• 7.9  Module B – other aspects not related to a single life cycle stage.
• B-11 Distinction between Modules B2, B3, B4 and B5
• B-12 Robustness of data (LCA, service life) to model the life cycle of a building product