Some Essential Formula and Example for Industrial Engineer (IE)

Some Important Formula & Example for IE



   1. Standard Pitch Time (S.P.T) = Basic Pitch Time (B.P.T) + Allowances (%)
         
  • GSD = (Man power * Work hour) / Target          
  • SMV = Basic time + (Basic time * Allowance)          
  • Basic time = Observed time * Rating
  • Observed time = Total Cycle time / No of cycle
  • Rating = (Observed Rating * Standard rating) / Standard rating
  • Efficiency = (Earn minute * Available minute) * 100
  • Earn minute = No of Pc’s (Production) * Garments SMV
  • Available minute = Work hour * Manpower
  • Organization Efficiency = (Basic pis time / Bottle neck time) * 100
  • Basic pis time = Total GMT SMV / Total Manpower
  • UCL = Basic pis time / Organization Efficiency
  • LCL = 2 * Basic pis time – UCL
  • Capacity = 60 / Capacity time in minute
  • Cycle Time = 60 / Team target
  • Capacity Achievable = Capacity * Balance
  • Daily output = Work hour / SMV
  • Factory capacity = (Work hour / SMV) * Total worker * Working day * Efficiency
  • CPM = (Total over head cost of the month / No of SMV earners * Work minutes) *Efficiency
  • Required no of operator = Target daily output / Daily output per operator

Example:

1. Efficiency = Output/Input

                      = (SMV*Product Quantity) / (Worker*Working Hour*60)

                      = [(38.50*700) / (60*10*60)]*100

                      = 74% (Line Efficiency)

Here,
SMV=38.50
Working hour=10
No. of worker=60

2. Target/hour = (60/SMV)*Efficiency%

                        = (60/0.85)*70%

                        = 50 pcs/hour

Here,
SMV=0.85
Efficiency=70%

3. Target/line = [(No of worker*working hour*60)/SMV]*Efficiency%

                       = [(75*10*60)/23.5]*60%

                       = 1150 pcs

Here,
No of workers=75
Working hours=10
SMV=23.5
Efficiency=60%

4. Required days for the schedule = Total order quantity/Average target

                                                         = 50000/2000

                                                         =25

Here,
Average target=2000
Order quantity=50000

5. CM of garments= (Total Production)/(no of worker*work hour)

                               = 250000/(1500*10)

                               =1.66 BDT

Here,
Total Production=250000
No of workers= 1500

6. Factory capacity = [(Work hour*total workers*working day*60)/SMV]*Efficiency

                                = [(10*1500*26*60)/14.13]*55%

                                = 828025 pcs/month


7. Line GSD/day = (Manpower*work hour)/target

                             = (50*10*60)/900

                             = 33

Sharing Knowledge: Students, teachers and professionals can publish your article here. It is a platform to express your knowledge throughout the world. For details: Submit Article

Editor-in-Chief:

Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.


Let's Get Connected: LinkedIn | Facebook | Google Plus