Availibility is defined as a derived quantity of the switched-on time (operation time plus standby time) and the down time. These are two methods for testing the availability of transport and storage systems: a) estimation in the planning phase and b) practical measurement within the framework of the system start-up.
VDI 3581-2004 Referenced Document
VDI 3561-1973 Operating test cyles for performance comparison and for the commissioning of stacker-cranes
VDI 3578-1998 Attachment for forklift trucks (load lifting appliance)
VDI 3579-1994 Recommendations for the invitation to tender and placing of order for materials handling and storage systems
VDI 3580-1995 High bay warehouses - Basic data to record failures
VDI 3649-1992 Calculation of availability in handling and storage systems
VDI 4480 Blatt 1-1998 Throughput of automatic warehouses with lane-bound shelf operating systems
VDI 3581-2004 history
2004VDI 3581-2004 Availability of transport and storage systems including subsystems and elements
2001VDI 3581-2001 Availability of transport/storage equipment as well as their subsystems and elements
1983VDI 3581-1983 Reliability and availability of installations for transportation and storage
1981VDI 3581-1981 Reliability and availability of installations for transportation and storage