The Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018, defines ‘service life’ as: ‘The period of time after installation during which a building, or its part, meets or exceeds the performance requirements.’ Ref: BSI, BCIS. 2008. PD 156865. Standardized Method of Life Cycle Costing for Construction Procurement. s.l. : BSi, 2008.
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines service life as: ‘The period of time after construction or refurbishment when an asset meets or exceeds its functional performance requirements.’ It defines residual service life as: ‘Service life remaining at a certain moment of consideration (also known as residual life).’
Redefining value, The manufacturing revolution, Remanufacturing, refurbishment, repair and direct reuse in the circular economy, published by the United Nations Environment Programme in 2018, suggests service life: 'Refers to a product’s total lifetime during which it can be used economically or the time during which it is used by one owner, from
the point of sale to the point of diversion for reuse via VRPs (Value-Retention Processes), or to the point of disposal (Cooper 1994). This is differentiated from Expected Service Life as it refers to the actual service life and is not necessarily associated with manufacturer expectations or commitments.'
It suggests that expected service life: ‘Refers to the manufacturer’s expectations about the time-period for which a product can be used, usually specified as a median, and reflecting the time that the product can be expected to be serviceable and/or supported by its manufacturer.’
Full service life: ‘Refers to value-retention processes (VRPs) that enable the fulfillment of a complete new life for every usage cycle of the product, and includes manufacturing (OEM Original Equipment Manufacturer new), comprehensive refurbishment, and remanufacturing. These processes take place within factory settings and industrial operations.’
And that partial service life: 'Refers to value-retention processes (VRPs) that enable the completion of, and/or slight extension of, the expected product life, through arranging direct reuse of the product, repair, and refurbishment. These processes take place within maintenance or intermediate maintenance operations.'
See also: Service life of products.
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