specifications on the system are that it must have a total of 400 storage bins and a throughput of at least 125 storage and retrieval transactions/hr. Two altemative configurations are being considered: (1) a one-carousel system and (2) a two-carousel system. In either case, the width of the carousel is to be 4.0 ft and the spacing between caniers = 2.5 ft. One picker operator will be required for the one-carousel system and two picker-operators will be required for the two-carousel system. In either system, v = 75 ft'min. For the convenience of the picker-operator, the height of the carousel will be limited to 5 bins. The standard time for a pick and deposit operation at the load/unload station = 0.4 min if one part is picked or stored per bin and 0.6 min if more than one part is picked or stored. Assume that 50% of the transactions will involve more than one part. Determine (a) the required length of the onecarousel system and (b) the coesponding throughput rate; (e) the required length of the two- carousel and (d) the corresponding throughput rate. (e) Which system better satisfies the design

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7. A carousel storage system is to be designed to serve a mechanical assembly plant. The
specifications on the system are that it must have a total of 400 storage bins and a
throughput of at least 125 storage and retrieval transactions/hr. Two altemative
configurations are being considered: (1) a one-carousel system and (2) a two-carousel
system. In either case, the width of the carousel is to be 4.0 ft and the spacing between
caniers = 2.5 ft. One picker operator will be required for the one-carousel system and
two picker-operators will be required for the two-carousel system. In either system, ve
= 75 ft'min. For the convenience of the picker-operator, the height of the carousel will
be limited to 5 bins. The standard time for a pick and deposit operation at the load/unload
station = 0.4 min if one part is picked or stored per bin and 0.6 min if more than one
part is picked or stored. Assume that 50% of the transactions will involve more than one
part. Determine (a) the required length of the onecarousel system and (b) the
corresponding throughput rate; (c) the required length of the two- carousel and (d) the
corresponding throughput rate. (e) Which system better satisfies the design
specifications?
Transcribed Image Text:7. A carousel storage system is to be designed to serve a mechanical assembly plant. The specifications on the system are that it must have a total of 400 storage bins and a throughput of at least 125 storage and retrieval transactions/hr. Two altemative configurations are being considered: (1) a one-carousel system and (2) a two-carousel system. In either case, the width of the carousel is to be 4.0 ft and the spacing between caniers = 2.5 ft. One picker operator will be required for the one-carousel system and two picker-operators will be required for the two-carousel system. In either system, ve = 75 ft'min. For the convenience of the picker-operator, the height of the carousel will be limited to 5 bins. The standard time for a pick and deposit operation at the load/unload station = 0.4 min if one part is picked or stored per bin and 0.6 min if more than one part is picked or stored. Assume that 50% of the transactions will involve more than one part. Determine (a) the required length of the onecarousel system and (b) the corresponding throughput rate; (c) the required length of the two- carousel and (d) the corresponding throughput rate. (e) Which system better satisfies the design specifications?
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