what is the standard time benefits how to calculate it sample of macro motion study

1. Motion &Time study
Standard time –Macro Motion study
By : Norhan Eldeeb
Operational Excellence

2. Content :
• What is ST (standard time )
• What is the benefits of ST (standard time )
• How to calculate ST (standard time )

3. What is ST (standard time ) :
• It is the time it takes for a qualified worker, using appropriate processes and
tools, to complete a specific job, taking into account the time for worker
stress and inevitable delays.
What is the benefits of ST (standard time ) :
1) Measuring the cost of operating labor to calculate the cost of products
2) Performance comparison VS standard
3) Planning the optimization of available resources (Capacity planning -
scheduling)
4) VSM, SMED, TPM, Kaizen events and Yamazumi

4. How to calculate ST (standard time ):
1) Determine the process to be studied
Clearly
2) Inform the worker on whom the study will be conducted
Ethical issue – Know more about process
Iproduct : A
Product length : 1.75 m
MC : press 1072
1.75m

5. 3) Divide the process into steps and define the cycle time
O/P
Scrap
Cycle
time
From the point to the same point
How to calculate ST (standard time ):
1- Loading of the first pipe 5.35 m
2- First piston lowering
3- Second piston lowering
4 - Putting the first pipe 1.75 m in the box
5- The third piston lowering
6- Putting the second pipe 1.75 m into the box
7- Fourth piston lowering
8- Putting the third pipe 1.75 m into the box
9 - Put the crap in the litter box
10- Start of loading for the second pipe 5.35 m

6. 4) Determine the number of cycles to be observed and repeated
throughout the day
1- Various machines
2- Various labor
3- Different working hours
N≈5
How to calculate ST (standard time ):
Lazy Normal Rapid

7. 5) Record data using video or
stopwatch
6) Analyzing the data in the Process
Activity Map
Process Activity Mapping
Video Ref vedio
Date 19/08/2019
Engineer Norhan
Study ref cuplock ledger 1.8
Operator
Shift 1
Step#
Description Time Sec Distance m Qty Op Move Inspect Delay Store
1=VA
0=NVA
2=NNVA
1
filling the machine with 10
tubes 17 0 10
0
2 loading 1 tube 2 0 1
2
3 fillig LF and RT forged blades 6 0 2
0
4
check the tube centric with the
RT forged blade 2 0 1
0
5 welding operation 12 0 1
1
6 unloading tube 1 4 0 1
0
7 loading 2 tube 2 0 1
2
8 fillig LF and RT forged blades 6 0 2
0
9
check the tube centric with the
RT forged blade 2 0 1
0
10 welding operation 12 0 1
1
11 unloading tube 2 4 0 1
0
12 loading 3 tube 2 0 1
2
13 fillig LF and RT forged blades 6 0 2
0
14
check the tube centric with the
RT forged blade 2 0 1
0
15 welding operation 12 0 1
1
16 unloading tube 3 4 0 1
0
17 walk to the o/p 4 3 1
0
18 rearrange the o/p 24 0 1
0
19 walk back 4 3 1
0
127 100%
120 94
7 6
assembly process by using welding
M/Cs
Process description
total cycle time
total VA time
total NVA
weldingmachine
ledgerO/P
1
2
3
6
VA NVA NNVA
Operation Transportation Inspection Delay
inventory
How to calculate ST (standard time ):
That is a sample of Macro Motion study

8. 7) Therefore, we are aware of the observed
time for every operator (Avg. the observed
time for every individual worker in the
different working hours )
8) Calculate Normal time or Basic time
(the rating puts by someone expert in the
operation )
Normal time = Observed time × rating
80% 100% 120%
How to calculate ST (standard time ):

9. 8) Calculate Normal time or Basic time
If the operator runs slow, NO time <OB time
If the operator runs fast, NO time> OB time
Normal time = Observed time × rating
Operator OB time Rating NO time
250 sec 80
100
200 sec
200 sec 100
100
200 sec
150 sec 120
100
180 sec
AVG 194 sec
How to calculate ST (standard time ):

10. 8) Calculate the ST time
Standard time = Normal time (1+ Allowances)
Allowance timeA ≈20%
How to calculate ST (standard time ):

11. Operational Excellence
Opera
tor
OB
time
Rating NO
time
A %
90
sec
90% 15%
60
sec
100% 15%
50
sec
110% 15%
AVG.NO time
ST time
Saw Drill
Opera
tor
OB
time
Rating NO
time
A %
170
sec
85% 20%
130
sec
100% 20%
120
sec
125% 20%
AVG.NO time
ST time
Weld
Exercise: Where is the bottleneck
Opera
tor
OB
time
Rating NO
time
A %
160
sec
80% 25%
120
sec
100% 25%
100
sec
120% 25%
AVG.NO time
ST time
Normal time = Observed time × rating
Standard time = Normal time (1+ Allowances)

12. Operational Excellence
Opera
tor
OB
time
Rating NO
time
A %
90
sec
90% 81sec 15%
60
sec
100% 60sec 15%
50
sec
110% 55sec 15%
AVG.NO time 66 sec
ST time 76 sec
Saw Drill
Opera
tor
OB
time
Rating NO
time
A %
170
sec
85% 145
sec
20%
130
sec
100% 130
sec
20%
120
sec
125% 150
sec
20%
AVG.NO time 142 sec
ST time 171 sec
Weld
Opera
tor
OB
time
Rating NO
time
A %
160
sec
80% 128
sec
25%
120
sec
100% 120
sec
25%
100
sec
120% 120
sec
25%
AVG.NO time 123 sec
ST time 154 sec
Exercise: Where is the bottleneck
Normal time = Observed time × rating
Standard time = Normal time (1+ Allowances)

13. Thank
you
Operational Excellence