Bakery Production Using Arena Simulation

Mahidol University
Faculty of Engineering
EGIE 502: System Thinking and Modeling
JC Bakery Simulation
Submitted to:
Asst. Prof. Dr. Waressara Weerawat
Submitted by:
Socheat Veng ID: 6037614
2017-2018

CONTENTS
1. PROJECT DESCRIPTION.........................................................................................1
1.1 Project Title and Problem............................................................................................1
1.2 Necessary information.................................................................................................1
1.1.1. Entity............................................................................................................................1
1.1.2. Process .........................................................................................................................2
1.1.3. Resource ......................................................................................................................2
1.1.4. Process-Resources .......................................................................................................3
1.1.5. Schedule.......................................................................................................................3
1.3 Model Layout ..............................................................................................................4
1.4 Conceptual Flow .........................................................................................................5
1.5 Conceptual Model .......................................................................................................6
2. OBJECTIVE OF PROJECT........................................................................................7
2.1. KPI..................................................................................................................................7
2.2. Running Parameter .........................................................................................................7
2.3. Scenarios to Compare .....................................................................................................8
2.4. Arena Model .................................................................................................................10
2.5. Results...........................................................................................................................11
2.6. Result from running simulation....................................................................................11
2.7. Result from comparing scenarios .................................................................................18
2.8. Output Analyzer for Compare Mean of Scenario 1 and Scenario2 ..............................19
2.9. Summary Result from Each KPI ..................................................................................22
3. DISCUSSION AND CONCLUSION.......................................................................23
3.1. Discussion.....................................................................................................................23
3.2. Conclusion....................................................................................................................23

TABLE OF FIGURE
Figure 1.1. Model Layout of JC Bakery...............................................................................4
Figure 1.2. Conceptual Flow of JC Bakery ..........................................................................5
Figure 1.3. Conceptual Model of JC Bakery ........................................................................6
Figure 2.1. Conceptual Model of JC Bakery ......................................................................10
Figure 2.2. Comparing all 3 scenarios ................................................................................18
Figure 2.3. Compare Mean for all entity output of Scenario 1,2 and 3 ..............................18
Figure 2.4. Comparison the utilization the former Packer and forming staff for all scenario
.............................................................................................................................................18
Figure 2.5. Total average processing time for all entity scenario 1,2, and 3 ......................19
Figure 2.6. Compare Mean Entity 1of Scenario 1 and Scenario2 ......................................19
Figure 2.9. Compare Mean utilization forming staffof Scenario 1 and Scenario2 .............20
Figure 2.10. Compare Mean utilization former-paker staff of Scenario 1 and Scenario2..21
Figure 2.11. Compare Mean total processing time entity1 of Scenario 1 and Scenario2...21
Figure 2.12. Compare Mean total processing time entity 2 of Scenario 1 and Scenario2..21
Figure 2.13. Compare Mean total processing time entity 3 of Scenario 1 and Scenario2..22

1
PART 1
1. PROJECTDESCRIPTION
1.1 Project Title and Problem
 Title: JC Bakery Simulation
 Problem: This bakery spends very long time and less productivity; the workers
are not so busy during working time. One more thing is that the demand of bakery
is increase, so we want to improve productivity of the product.
1.2 Necessary information
JC Bakery produces 3 types of breads such as Rye Bread, Poppy seed Rolls, and
Rye-wheat Bread. This bakery has only one production line for producing these 3 differences
type of bread. The production line of bakery system consists of 10 processes such as Process
Load Powder to Mixing Machine, Mixing process, Process Unload Powder from Mixing
Machine, Forming Process, Fermentation process, Process load Bread to Baking Machine,
Baking process, Process Unload Bread from Baking Machine, Cooling process, and
Packaging process. This bakery work for 9 hours, start from 6am, and the production is
continuously produced those 3 types of bread.
1.1.1. Entity
The entities arrival time are based on Entity schedule. The amount of all powder
enters to mixing process per one time is 5kg which can produce 100 breads. Rye Bread and
Poppy Seed Rolls are kind of steaming bread. Rye-wheat Bread is kind of burning bread.
Tunnel oven (Steaming machine) is use for steaming bread, and Rack oven (Burning
machine) use for backing bread.
Table 1.1. Entity Schedule
Entity ID Entity name Start time Arrival time(minute)
Entity 1 Rye Bread Powder 6:00am Constant (40)
Entity 2 Poppy seed Rolls Powder 6:10am Constant (40)
Entity 3 Rye-wheat Bread Powder 6:25am Constant (40)

2
1.1.2. Process
For Mixing process, there is one mixing machines, load and unload process we use
only one worker, at forming process for Rye Bread need forming by manual process which
has one worker, and another 2 breads could form by Forming Machine. To produce Rye-
wheat Bread we have to retard the powder (fermentation) in processing time of UNIF (25,30)
minutes and for another bread need to proof in processing time of UNIF (10,15). At Baking
process, there are two workers for package the bread. The types of machine that we can use
depend on the needed: Rack oven and Tunnel Oven. At packaging process, there are two
packers to do the packaging of the bread after it already cooling UNIF (10,15) min.
Table 1.2. Processing time for all 10 processes
Process
ID
Process Name
Processing
Time Entity
1 (Minute)
Processing
Time
Entity 2
(Minute)
Processing
Time
Entity 3
(Minute)
P1 Load Powder to Mc TRAI (1,2,4)
P2 Mixing Process UNIF (5,10)
P3 Unload Powder from Mc TRAI (1,1,3)
P4 Forming Process UNIF (30,40) UNIF (10,15) UNIF (10,15)
P5 Fermentation Process UNIF (10,15) UNIF (10,15) UNIF (25,30)
P6 Load Bread to Backing Mc TRAI (2,3,4)
P7 Backing Process CON (20) CON (20) CON (23)
P8 Unload Bread from Backing Mc TRAI (1,1,3)
P9 Cooling Process UNIF (10,15)
P10 Packaging Process UNIF (10,15)
1.1.3. Resource
Resource ID Resource name Capacity
R1 Load Unload Operator 1
R2 Mixing machine 2
R3 Forming Staff 1

3
R4 Forming machine 1
R5 Proofer Machine 1
R6 Rack oven 2
R7 Tunnel oven 1
R8 Packer 2
1.1.4. Process-Resources
Process ID Process name Resource ID
P1 Load Unload Operator R1
P2 Mixing machine R1
P4 Forming Staff R3
P4 Forming machine R4
P5 Proofer Machine R5
P7 Rack oven R6
P7 Tunnel oven R7
P9 Cooling No
P10 Packer R8
1.1.5. Schedule
The official schedule’s working is from Monday to Sunday. They start working from 6:00AM
until 11:00AM and from 1:00PM until 4:00PM. For a small break, all workers are given 15
minutes break after they work first 2 hours, and break 1hour break for lunch time after work
4 hours, then break 15min after work 6hours and 8hours.
Working schedule for staff
Name 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15
All worker
Forming Staff
Packer

4
1.3 Model Layout
Below is the model layout of the JC Bakery:
Figure 1.1. Model Layout of JC Bakery

5
1.4 Conceptual Flow
Below is the process flow of the JC Bakery:
Figure 1.2. Conceptual Flow of JC Bakery

6
1.5 Conceptual Model
Figure 1.3. Conceptual Model of JC Bakery

7
PART 2
2. OBJECTIVE OF PROJECT
The objective of this project is to increase the production output of the JC bakery by
changing the time sequence of the entity and share the resource.
2.1. KPI
 Production output
 Utilization of former-packer, and forming staff
 Total cycle time
 Attribute list
Name Type Attribute Value
Assign 1 Attribute Bread A 1
Assign 1 Attribute Bread B 1
Assign 1 Attribute Bread C 1
 Record
Name Type Value
Record number out entity 1 Expression Number Entity 1out
Record Utilization of Former-Packer Expression Utilization Former-Packer
Record Utilization of Forming staff Expression Utilization Forming staff
2.2. Running Parameter
 Base time unit is minute for running this simulation model.
 Run time: The run time of this model is set at least 9 hours=360 mins.
 Terminating condition: a terminating simulation is one in which model dictate specific
starting and stopping condition as a natural reflection of how the target system actually
operate. Therefore, this model will be run 9 hours because they want the entity which
is waiting in processes at the time 360 mins to leave all from the system that is why
they next to expand some duration of time to clear all the customers in system.
 Number of Replications is 10 is the optimal choice and calculated by:

8
 First, calculation the mean of sample from 10 replications, for an example we
select the average total time for each entity to be test:
Table 2.1. Number out of Entities
Rep1 Rep2 Rep3 Rep4 Rep5 Rep6 Rep7 Rep8 Rep9 Rep10 Average
Entity1 10 10 10 10 10 10 10 10 10 10 10
Entity2 11 11 11 11 11 11 11 11 11 11 11
Entity3 10 9 10 9 9 9 10 9 9 10 9.4
The more number of replications, the more efficiency of compare, so we prefer the
larger date that is why we selected only entity type 1 to test in our method:
We got SD = 11
 Second, we calculate the number of Haft width:
Haft width = 𝑡 𝑛−1;
𝛼
2
×
𝑆𝐷
√ 𝑛
= 𝑡9;0.025 ×
11
√10
Haft width = 2.262 ×
11
√10
= 7.86~8
Now we have Haft width = 8 from this number we prefer the haft width only 5 to input
in our project. Then the new haft width is 5.
The third step is to find the new number of replications by using 2 methods to
compare the number of replications that we will select:
First method: 𝑛 = 𝑍2
×
𝑆𝐷2
ℎ2
= 1.962
×
112
52
= 92.96
Second method: 𝑛 = 𝑛0 ×
𝑆𝐷2
ℎ2
= 10 ×
112
52
= 48.4
From these two methods, we will select the bigger number (the more is the better) that
falls into the second method that has the number of replications is 12.96, and we will set 100
replications as the optimal choice of our project.
2.3. Scenarios to Compare
In this project, there are 3 scenarios to compare:

9
 Scenario 1: It is the initial model.
 Scenario 2: We change the arrival time of the entities that enter into the process.
 Scenario 3: We change the arrival time of the entities that enter into the process, and
also share the resource of packer of the packaging process to help the forming staff
in the process manual forming.
Table 2.2. Below is the schedule of scenario 2 and Scenario 3
Entity ID Entity name Start time Arrival time(minute)
Entity 1 Rye Bread Powder 6:00am Constant (30)
Entity 2 Poppy seed Rolls Powder 6:10am Constant (30)
Entity 3 Rye-wheat Bread Powder 6:25am Constant (30)

10
2.4. Arena Model
Figure 2.1. Conceptual Model of JC Bakery

11
2.5. Results
2.6. Result from running simulation
In this report, we decided to put the result of Scenario 1 and Scenario 3 to show as the
sample only, and the rest two scenarios will summary in the scenarios compare response
 Result of Scenario 1
ARENA Simulation Results
DELL - License: STUDENT
Summary for Replication 100 of 100
Project: Unnamed Project Run execution date :12/13/2017
Analyst: DELL Model revision date:12/13/2017
Replication ended at time : 540.0 Minutes
Base Time Units: Minutes
TALLY VARIABLES
Identifier Average Half Width Minimum Maximum Observations
___________________________________________________________________________________________________
Record Nomout_Entitty3 4.2333 (Insuf) .00000 9.0000 30
Record Nomout_Entity1 4.8666 (Insuf) .00000 10.000 30
Record Utiliz_Forming_staff .96667 (Insuf) .00000 1.0000 30
Record Utiliz_Former_Packer .35000 (Insuf) .00000 1.0000 30
Entity 1.VATime 75.559 (Insuf) 71.496 79.831 10
Entity 1.NVATime .00000 (Insuf) .00000 .00000 10
Entity 1.WaitTime 46.345 (Insuf) 1.5583 72.994 10
Entity 1.TranTime .00000 (Insuf) .00000 .00000 10
Entity 1.OtherTime 32.403 (Insuf) 28.372 35.788 10
Entity 1.TotalTime 154.30 (Insuf) 112.12 183.06 10
Entity 2.WaitTime 38.524 (Insuf) .66112 74.580 11
Seize Manual Forming.Queue.WaitingTime 12.799 (Insuf) .00000 48.495 13
Seize Oven.Queue.WaitingTime 6.2266 (Insuf) .00000 53.852 25
Unload Bread From Oven.Queue.WaitingTime 8.0531 (Insuf) .00000 60.509 23
Load Bread to Steam Machine.Queue.WaitingT 3.7362 (Insuf) .00000 15.861 11
Proofer.Queue.WaitingTime .70040 (Insuf) .00000 5.0630 13
Seize to Package.Queue.WaitingTime 2.2227 (Insuf) .00000 17.807 32
Unload Bread From Steam Machine.Queue.Wait 7.3807 (Insuf) .00000 60.084 10
Seize Steam Machine.Queue.WaitingTime 22.885 (Insuf) .00000 67.283 11
Load Bread to Oven.Queue.WaitingTime 2.8656 (Insuf) .00000 15.647 25
Unload Powder From Mixing Mc.Queue.Waiting 3.9382 (Insuf) .00000 55.556 40
Load Powder to Mixing Mc.Queue.WaitingTime 3.6189 (Insuf) .00000 55.614 41
Mc forming.Queue.WaitingTime 2.3590 (Insuf) .00000 12.562 26
Seize Mixing Mc.Queue.WaitingTime 6.2387 (Insuf) .00000 41.865 41
DISCRETE-CHANGE VARIABLES
Identifier Average Half Width Minimum Maximum Final Value
___________________________________________________________________________________________________
Entity 1.WIP 3.4501 (Insuf) .00000 5.0000 4.0000
Entity 2.WIP 2.8514 (Insuf) .00000 4.0000 3.0000
Entity 3.WIP 3.3924 (Insuf) .00000 5.0000 4.0000
Former_Packer.NumberBusy .72688 (Insuf) .00000 2.0000 2.0000
Former_Packer.NumberScheduled 1.6162 (Insuf) .00000 2.0000 2.0000
Former_Packer.Utilization .37605 (Insuf) .00000 1.0000 1.0000
Steam Machine.NumberBusy .80919 (Insuf) .00000 1.0000 1.0000
Steam Machine.NumberScheduled 1.0000 (Insuf) 1.0000 1.0000 1.0000
Steam Machine.Utilization .80919 (Insuf) .00000 1.000 0 1.0000
Load_Unload Operator.NumberBusy .60763 (Insuf) .00000 1.0000 .00000
Load_Unload Operator.NumberScheduled .82682 (Insuf) .00000 1.0000 1.0000

12
Load_Unload Operator.Utilization .60763 (Insuf) .00000 1.0000 .00000
Forming Machin Operator.NumberBusy .60279 (Insuf) .00000 1.0000 .00000
Forming Machin Operator.NumberScheduled 1.0000 (Insuf) 1.0000 1.0000 1.0000
Forming Machin Operator.Utilization .60279 (Insuf) .00000 1.0000 .00000
Mixer Machine.NumberBusy 1.4237 (Insuf) .00000 2.0000 1.0000
Mixer Machine.NumberScheduled 2.0000 (Insuf) 2.0000 2.0000 2.0000
Mixer Machine.Utilization .71187 (Insuf) .00000 1.0000 .50000
Forming Staff.NumberBusy .78133 (Insuf) .00000 1.0000 1.0000
Forming Staff.NumberScheduled .78407 (Insuf) .00000 1.0000 1.0000
Forming Staff.Utilization .78133 (Insuf) .00000 1.0000 1.0000
Proofer Machine.NumberBusy .61053 (Insuf) .00000 1.0000 1.0000
Proofer Machine.NumberScheduled 1.0000 (Insuf) 1.0000 1.0000 1.0000
Proofer Machine.Utilization .61053 (Insuf) .00000 1.0000 1.0000
Forming Machine.NumberBusy .60279 (Insuf) .00000 1.0000 .00000
Forming Machine.NumberScheduled 1.0000 (Insuf) 1.0000 1.0000 1.0000
Forming Machine.Utilization .60279 (Insuf) .00000 1.0000 .00000
Oven.NumberBusy 1.5565 (Insuf) .00000 2.0000 2.0000
Oven.NumberScheduled 2.0000 (Insuf) 2.0000 2.0000 2.0000
Oven.Utilization .77826 (Insuf) .00000 1.0000 1.0000
Seize Manual Forming.Queue.NumberInQueue .33013 (Insuf) .00000 2.0000 1.0000
Seize Oven.Queue.NumberInQueue .28827 (Insuf) .00000 2.0000 .00000
Unload Bread From Oven.Queue.NumberInQueue .34300 (Insuf) .00000 2.0000 .00000
Load Bread to Steam Machine.Queue.NumberIn .07611 (Insuf) .00000 1.0000 .00000
Proofer.Queue.NumberInQueue .01686 (Insuf) .00000 1.0000 .00000
Seize to Package.Queue.NumberInQueue .13172 (Insuf) .00000 2.0000 .00000
Unload Bread From Steam Machine.Queue.Numb .13668 (Insuf) .00000 1.0000 .00000
Seize Steam Machine.Queue.NumberInQueue .48748 (Insuf) .00000 2.0000 1.0000
Load Bread to Oven.Queue.NumberInQueue .13267 (Insuf) .00000 1.0000 .00000
Unload Powder From Mixing Mc.Queue.NumberI .29172 (Insuf) .00000 2.0000 .00000
Load Powder to Mixing Mc.Queue.NumberInQue .27477 (Insuf) .00000 2.0000 .00000
Mc forming.Queue.NumberInQueue .11359 (Insuf) .00000 1.0000 .00000
Seize Mixing Mc.Queue.NumberInQueue .47368 (Insuf) .00000 4.0000 .00000
OUTPUTS
Identifier Value
_____________________________________________________________
T TimeE3 161.32
T TimeE2 126.34
UtiilFormer Packer 1.0000
Outphut E1 10.000
T TimeE1 154.30
Outphut E2 11.000
UtiilForming staff 1.0000
Outphut E3 9.0000
Entity 1.NumberIn 14.000
Entity 1.NumberOut 10.000
Former_Packer.NumberSeized 32.000
Former_Packer.ScheduledUtilization .44974
Steam Machine.NumberSeized 11.000
Steam Machine.ScheduledUtilization .80919
Load_Unload Operator.NumberSeized 150.00
Load_Unload Operator.ScheduledUtilization .73490
Forming Machin Operator.NumberSeized 26.000
Forming Machin Operator.ScheduledUtilizati .60279
Mixer Machine.NumberSeized 41.000
Mixer Machine.ScheduledUtilization .71187
Forming Staff.NumberSeized 13.000
Forming Staff.ScheduledUtilization .99651
Proofer Machine.NumberSeized 13.000
Proofer Machine.ScheduledUtilization .61053
Forming Machine.NumberSeized 26.000
Forming Machine.ScheduledUtilization .60279
Oven.NumberSeized 25.000
Oven.ScheduledUtilization .77826
System.NumberOut 30.000
Output Summary for 100 Replications
OUTPUTS
Identifier Average Half-width Minimum Maximum # Replications
___________________________________________________________________________________________________
T TimeE3 152.65 1.0944 137.19 163.85 100

13
T TimeE2 122.06 .71343 112.42 130.21 100
UtiilFormer Packer .64500 .06435 .00000 1.0000 100
Outphut E1 9.9600 .03959 9.0000 10.000 100
T TimeE1 156.69 .95798 147.07 171.90 100
Outphut E2 11.010 .02010 11.000 12.000 100
UtiilForming staff 1.0000 .00000 1.0000 1.0000 100
Outphut E3 9.4700 .10082 9.0000 10.000 100
Entity 1.NumberIn 14.000 .00000 14.000 14.000 100
Entity 1.NumberOut 9.9600 .03959 9.0000 10.000 100
Entity 2.NumberIn 14.000 .00000 14.000 14.000 100
Entity 3.NumberIn 13.000 .00000 13.000 13.000 100
Former_Packer.NumberSeized 31.730 .10243 30.000 33.000 100
Former_Packer.ScheduledUtilization .44888 .00263 .41209 .47492 100
Steam Machine.NumberSeized 11.040 .03959 11.000 12.000 100
Steam Machine.ScheduledUtilization .77967 .00486 .72853 .82936 100
Load_Unload Operator.NumberSeized 148.62 .15590 147.00 151.00 100
Load_Unload Operator.ScheduledUtilization .71971 .00256 .68861 .74913 100
Forming Machin Operator.NumberSeized 26.110 .06321 26.000 27.000 100
Forming Machin Operator.ScheduledUtilizati .60180 .00287 .56564 .64220 100
Mixer Machine.NumberSeized 41.000 .00000 41.000 41.000 100
Mixer Machine.ScheduledUtilization .69347 .00441 .64667 .74263 100
Forming Staff.NumberSeized 12.300 .09257 12.000 13.000 100
Forming Staff.ScheduledUtilization 1.0150 .00540 .92362 1.0916 100
Proofer Machine.NumberSeized 13.000 .00000 13.000 13.000 100
Proofer Machine.ScheduledUtilization .62642 .00218 .59845 .65314 100
Forming Machine.NumberSeized 26.110 .06321 26.000 27.000 100
Forming Machine.ScheduledUtilization .60180 .00287 .56564 .64220 100
Oven.NumberSeized 24.040 .04882 23.000 25.000 100
Oven.ScheduledUtilization .73468 .00328 .69474 .77826 100
System.NumberOut 30.440 .10427 30.000 32.000 100
Simulation run time: 0.70 minutes.
Simulation run complete.
TALLY VARIABLES
___________________________________________________________________________________________________
Proofer.Queue.WaitingTime 2.6000 (Insuf) .00000 13.527 15
Seize to Package.Queue.WaitingTime 2.0640 (Insuf) .00000 26.181 3 4

14
___________________________________________________________________________________________________
Entity 1.WIP 5.7066 (Insuf) .00000 9.0000 9.0000
Entity 2.WIP 4.2599 (Insuf) .00000 7.0000 6.0000
Entity 3.WIP 4.7803 (Insuf) .00000 8.0000 8.0000
Former_Packer.NumberBusy .73720 (Insuf) .00000 2.0000 2.0000
Steam Machine.Utilization .85268 (Insuf) .00000 1.0000 1.0000
Load_Unload Operator.NumberBusy .68957 (Insuf) .00000 1.0000 1.0000
Load_Unload Operator.Utilization .68957 (Insuf) .00000 1.0000 1.0000
Forming Machin Operator.NumberBusy .72732 (Insuf) .00000 1.0000 1.0000
Forming Machin Operator.Utilization .72732 (Insuf) .00000 1.0000 1.0000
Mixer Machine.Utilization .87777 (Insuf) .00000 1.0000 1.0000
Forming Machine.NumberBusy .72732 (Insuf) .00000 1.0000 1.0000
Forming Machine.Utilization .72732 (Insuf) .00000 1.0000 1.0000
Oven.NumberScheduled 2.0000 (Insuf) 2.0000 2.0000 2.000 0
Seize Manual Forming.Queue.NumberInQueue 1.7616 (Insuf) .00000 4.0000 4.0000
Seize Oven.Queue.NumberInQueue .80701 (Insuf) .00000 3.0000 1.0000
Proofer.Queue.NumberInQueue .07222 (Insuf) .00000 1.0000 .00000
Seize to Package.Queue.NumberInQueue .12996 (Insuf) .00000 2.0000 .00000
Load Powder to Mixing Mc.Queue.NumberInQue .24854 (Insuf) .00000 2.0000 1.0000
Mc forming.Queue.NumberInQueue .17325 (Insuf) .00000 1.0000 1.0000
Seize Mixing Mc.Queue.NumberInQueue 2.2615 (Insuf) .00000 6.0000 3.0000
OUTPUTS
Identifier Value
_____________________________________________________________
T TimeE3 170.14
T TimeE2 144.19
Outphut E1 10.000
T TimeE1 200.15
Outphut E2 12.000
Outphut E3 10.000
Forming Staff.ScheduledUtilization 1.0317

15
OUTPUTS
___________________________________________________________________________________________________
T TimeE3 174.13 .86421 165.50 193.35 100
T TimeE2 136.60 .93490 126.01 146.50 100
UtiilFormer Packer .66000 .06040 .00000 1.0000 100
Outphut E1 10.130 .08877 9.0000 11.000 100
T TimeE1 187.39 1.5680 171.35 208.53 100
Outphut E2 12.920 .08417 12.000 14.000 100
UtiilForming staff 1.0000 .00000 1.0000 1.0000 100
Outphut E3 10.010 .07281 9.0000 11.000 100
Entity 1.NumberIn 19.000 .00000 19.000 19.000 100
Entity 2.NumberIn 18.000 .00000 18.000 18.000 100
Entity 3.NumberIn 18.000 .00000 18.000 18.000 100
Former_Packer.ScheduledUtilization .48726 .00328 .44906 .52438 100
Forming Staff.ScheduledUtilization 1.1215 .01162 1.0073 1.2568 100
TALLY VARIABLES
________________________________________________________________________________________________ ___

16
Proofer.Queue.WaitingTime 4.3193 (Insuf) .00000 15.786 15
Seize to Package.Queue.WaitingTime 20.457 (Insuf) .00000 75.770 31
___________________________________________________________________________________________________
Entity 1.WIP 6.1402 (Insuf) .00000 10.000 10.000
Entity 2.WIP 4.3851 (Insuf) .00000 7.0000 6.0000
Entity 3.WIP 5.2256 (Insuf) .00000 9.0000 9.0000
Former_Packer.NumberBusy 1.4331 (Insuf) .00000 2.0000 2.0000
Steam Machine.Utilization .85268 (Insuf) .00000 1.0000 1.0000
Load_Unload Operator.NumberBusy .71298 (Insuf) .00000 1.0000 1.0000
Load_Unload Operator.Utilization .71298 (Insuf) .00000 1.0000 1.0000
Forming Machin Operator.NumberBusy .75623 (Insuf) .00000 1.0000 1.0000
Forming Machin Operator.Utilization .75623 (Insuf) .00000 1.0000 1.0000
Mixer Machine.Utilization .86785 (Insuf) .00000 1.0000 1.0000
Forming Machine.NumberBusy .75623 (Insuf) .00000 1.0000 1.0000
Forming Machine.Utilization .75623 (Insuf) .00000 1.0000 1.0000
Oven.NumberScheduled 2.0000 (Insuf) 2.0000 2.0000 2.0000
Seize Manual Forming.Queue.NumberInQueue 2.1547 (Insuf) .00000 6.0000 6.0000
Seize Oven.Queue.NumberInQueue .54565 (Insuf) .00000 3.0000 1.0000
Proofer.Queue.NumberInQueue .14579 (Insuf) .00000 1.0000 1.0000
Seize to Package.Queue.NumberInQueue 1.2949 (Insuf) .00000 4.0000 3.0000
Load Powder to Mixing Mc.Queue.NumberInQue .19529 (Insuf) .00000 2.0000 1.0000
Mc forming.Queue.NumberInQueue .26103 (Insuf) .00000 2.0000 .00000
Seize Mixing Mc.Queue.NumberInQueue 1.8461 (Insuf) .00000 6.0000 1.0000
OUTPUTS
Identifier Value
_____________________________________________________________
T TimeE3 188.53
T TimeE2 149.83
Outphut E1 9.0000
T TimeE1 218.41
Outphut E2 12.000

17
Outphut E3 9.0000
Forming Staff.ScheduledUtilization .95445
OUTPUTS
___________________________________________________________________________________________________
T TimeE3 193.44 1.6861 176.42 220.65 100
T TimeE2 151.72 1.7045 136.50 177.44 100
UtiilFormer Packer 1.0000 .00000 1.0000 1.0000 100
Outphut E1 8.2200 .10133 7.0000 9.0000 100
T TimeE1 207.29 1.6441 182.38 227.81 100
Outphut E2 11.940 .11363 10.000 13.000 100
UtiilForming staff .80000 .08081 .00000 1.0000 100
Outphut E3 9.1900 .09343 8.0000 10.000 100
Entity 1.NumberIn 19.000 .00000 19.000 19.000 100
Entity 2.NumberIn 18.000 .00000 18.000 18.000 100
Entity 3.NumberIn 18.000 .00000 18.000 18.000 100
Former_Packer.ScheduledUtilization .95310 .00562 .90138 1.0200 100
Forming Staff.ScheduledUtilization .95619 .00797 .88179 1.0416 100

18
2.7. Result from comparing scenarios
For Scenario Comparing, we chose the 3 responses according to our KPI, such as the
number out of all entity out, the Average total time of entity, and utilization of forming staff and
former-packager.
Figure 2.2. Comparing all 3 scenarios
For comparison the entity output or production output, for the scenario 2 is the best.
Figure 2.3. Compare Mean for all entity output of Scenario 1,2 and 3
For Comparison the utilization of the former-Packer and forming staff, the scenario
2 is the best, because in scenario 2 the total utilization of the resource former-packer and
forming staff is higher.
Figure 2.4. Comparison the utilization the former Packer and forming staff for all scenario

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For Comparison total average processing time for all entity, the scenario 3 is the best.
Figure 2.5. Total average processing time for all entity scenario 1,2, and 3
According to these two KPI compare scenarios, we can see that only the scenario
number 2 that is the best one. Because we want to increase the production output and
increase the utilization for the resource. One more thing is that, the total average processing
is higher, it means that our system is not much idle and not waste the time for working
process.
2.8. Output Analyzer for Compare Meanof Scenario 1 and Scenario2
 Entity 1
Figure 2.6. Compare Mean Entity 1of Scenario 1 and Scenario2
 Entity 2

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 Entity 3
 Utilization of forming staff
Figure 2.9. Compare Mean utilization forming staffof Scenario 1 and Scenario2

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 Utilization of former-packer
Figure 2.10. Compare Mean utilization former-paker staff of Scenario 1 and Scenario2
 Total average processing time Entity 1
Figure 2.11. Compare Mean total processing time entity1 of Scenario 1 and Scenario2
Figure 2.12. Compare Mean total processing time entity 2 of Scenario 1 and Scenario2

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Figure 2.13. Compare Mean total processing time entity 3 of Scenario 1 and Scenario2
2.9. Summary Result from Each KPI
 Production output
Entity output Scenario1 Scenario 2
Entity 1 9.96 11.01
Entity 2 10.13 12.92
Entity 3 8.22 10
Total 28.31 32.93
For 1 of all entity could produce 100 breads, so the total all kind of bread are
Scenario1: Entity (1 + 2 + 3) = 28.31 × 100 =2831 breads
Scenario2: Entity (1 + 2 + 3) = 32.93 × 100 =3293 breads
 Utilization of former-packer, and forming staff (%)
Resource Scenario1 Scenario 2
former-packer 0.64 0.66
forming staff 0.774 0.811
 Total processing time(Minute)
Entity output Scenario1 Scenario 2

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Entity 1 156.690 mins 187.394 mins
3. DISCUSSION AND CONCLUSION
3.1. Discussion
According to the data analysis above, it shows that the scenario 2 is the best one that
could answer to the objective such as the increasing of number output of entity1, entity 2, and
entity 3. The utilization of the resource is increasing for the bottle neck process, so the
productivity will be increase. For the average total time of entity is increase, it means that the
processing time for our process is increase that it is the way to reduce the waiting time of the
process. Thus, the scenarios 2 could be apply to get more production output and also increasing
the utilization of the resource they not free much that could give the advantage to the bakery, so
we choose the scenario 2 for applying to achieve the objective.
3.2. Conclusion
In conclusion, for JC bakery that have the problem with the demand increase, idle time,
and production output is not much, they can use the scenario 3 which change the time interval
of the entity and share the resource to help the bottleneck process, that the production out hut
increase from want increase the production output for solving the problems of demand increase
from 2831 breads to 3293 breads per day.

Bakery Production Using Arena Simulation

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