# Capacity calculation model

Six Sigma – iSixSigma Forums Old Forums General Capacity calculation model

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• #49989

MM
Participant

Hi All,
I have a process where associates are over-stressed because of volume. We have TAT of 20 days. Daily volume is in range of 4500-5500. 12 associates processing at average 300 cases.
I want to make a model where I can come up with required associate calculation keeping in mind that I am always at 15 day TAT. Pls note that Sat and Sun are included in TAT calculation but we donot work on these days.
I tried making a model but got stuck…need ideas…pls help.

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#171737

Mr Kid
Participant

If I understand correctly, you are looking for the correct # of associates to process 4500-5500 cases/ day.  If each asssociate can process 300 cs/day, wouldn’t this be 15-18 associates needed?  How are you managing in your current environment?  Overtime?  If demand is 5000/day, and you can only process ~3600/day, how are you handling the other 1400 per day?  Eventually, you must be finding some way to catch up…or are you just losing those orders?
Regarding TAT, your statement is not clear to me.  Your current TAT is 20 and you are targeting 15?  I think that you first should worry about capacity vs. demand, then analyze VA/NVA activities to attack TAT.  For a calculation, you would need to factor in that you are only working 71% (5/7) of the days available, so the work would have to be done in 10.7 days in order to meet your 15 calendar day average TAT.

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#171739

MM
Participant

Thanks Mr Kid for the reply.
Currently there are 13 ppl in the team. We have done overtime and awarded ppl for that currently. I can not get more ppl on permanent basis since budget is not available for that – client is paying this much only.
I was thinking of making some kind of model where I show that for x number of days I require 13+x number to process the work and bring the queue down to 15 days and thereafter manage the queue with existing 13.
I am trying to free up some capacity from other queues and am working on it. But meanwhile I need this matrix/model to showcase the workoverload that the team has. Maybe this will get me the required headcount.

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