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HOW TO CALCULATE BUNDLE HANLING TIME? (OR) HOW TO CALCULATE BHT?

 


HOW TO CALCULATE BUNDLE HANDLING TIME?

 

BUNDLE HANDKING TIME (BHT):

When we are calculating SAM, we used to add bundle handling time. Without BHT SAM may not be accurate. If the bundling system is not following then not required to consider. Often IE’s missed or not calculated BHT. Bundle handling time does not fall under regular routing performance. So we have to do a separate time study to find the bundle handling time per pies.

a) Bundling handling time need to study at two processes,

b) 1 -untie or open the bundle and other is align and tie the bundle

c) Both times have to observe with a stopwatch and record them

d) Based on the bundle side, the total time has to divided to each piece.   

Formula to calculate bundle handling time

BHT = (Observed time untie bundle + Observed time tie bundle) / Bundle quantity

If Bundle opening time = 15 seconds, after completed process bundle tie time = 30 seconds, Bundle quantity = 25 pcs, then

BHT = (15 + 30) / 25

BHT = 45 / 25

BHT = 1.8s per piece --------------------------------------- (a)

This yu can convert into minutes = 1.8/60 => 0.03mint

Reference:

SAM = Observed time x ratting x (1+ Allowances) + BHT

Here, The BHT can be considered as 0.03.

Note: Nowadays, the bundle handling process is eliminating from the sewing shop by using conveyor system, single-piece flow, etc. However, IE has to considered the BHT until the floor uses it.

 

 

 

 

  

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