Availability Analysis
5
Total time per day 24 hours x Total number of days per year 365 days = Total time per year 8760 hours 28 days 7.67 % Number of shifts per day 2 Length of shifts 7.5 hours 34.62 % 45 min 2.89 % Time not available per year 3957.8 hours 45.18 % 4802 hours 54.82 % 14.25 hours 855.0 min Number of days closed per year (holidays, weekends, Planned downtime per day (downtime accounted for in the production schedule, e.g. shop floor meetings, breaks, scheduled maintenance, etc.) Time available per year Time available per workday Next Loss (as a percentage of the total time in a 365 day-year) Remaining availability
-
Upload
ibrahim-el-sharr -
Category
Documents
-
view
212 -
download
0
description
Machine Effectiveness
Transcript of Availability Analysis
Total time per day 24 hoursx
Total number of days per year 365 days=
Total time per year 8760 hours
28 days 7.67 %
Number of shifts per day 2
Length of shifts 7.5 hours 34.62 %
45 min 2.89 %
Time not available per year 3957.75 hours 45.18 %
4802 hours 54.82 %
14.25 hours
855.0 min
Number of days closed per year (holidays, weekends, etc.)
Planned downtime per day (downtime accounted for in the production schedule, e.g. shop floor meetings, breaks, scheduled maintenance, etc.)
Time available per year
Time available per workday
NextNext
Loss(as a percentage of the total time in a 365 day-
year)
Loss(as a percentage of the total time in a 365 day-
year)
Remaining availability
Remaining availability
Machine ID AB12
Natural process time
23 min/product
Downtime
MTTF 6000 min4.76 %
MTTR 300 min
Minor stoppages
7 times
4.91 %
6 minHow long does an average stop take?
Rework
0.5 products1.46 %
25 min
Prototyping
2 min 0.23 %
Worker/machine interaction
23 min 2.69 %
Material/machine interaction
20 min 2.34 %
Setup
What lotsize is used for this product? 0 products
0 setups
0.00 %
What is the setup time? 0 min
0 min
Do you want to include setup time?
Now we need some details about the production parameters. If we ask for the time per day we mean a workday with the available time as calculated in the previous sheet.
What is the natural process time of the product on this machine?
What are the MTTF and MTTR of this machine? Only count the time lost during workdays.
How many times per day is the production stopped for small problems. E.g. due to a blocked machine, a safety stop, a defective product that has to be removed etc.
How many products have to be reworked per day due to quality problems?
How much time does it take to rework one product?
How much time is lost per day on the production of prototypes and test products?
How much time is lost per day because no operator is available?
How much time is lost per day because of material shortages?
How many setups per day are there on this machine?
How much time is lost after a setup before the first good product is produced?
ResultsResults
Loss(as a percentage of the total time in a
workday)
Loss(as a percentage of the total time in a
workday)
Yes
No
Results
23.00 min
Per type of outage Cumulative
100 % Per type of outage Cumulativedowntime 4.76 % 95.24 % 1.31 min 24.31 minminor stoppages 4.91 % 90.33 % 1.35 min 25.66 minrework 1.46 % 88.86 % 0.40 min 26.06 minprototyping 0.23 % 88.63 % 0.06 min 26.13 minworker/machine int. 2.69 % 85.94 % 0.74 min 26.87 minmaterial/machine int. 2.34 % 83.60 % 0.64 min 27.51 minsetup 0.00 % 83.60 % 0.00 min 27.51 min
16.40 %
27.51 min
83.60 %
54.82 %
45.83 % 50.19 min
525600 min
240883 min
natural process time
effective process time 1
Availability per workday
Time available per year
Availability on a yearly basis
effective process time 2
total time per year (365x24x60)
effective time used per year
GraphGraph
natural process time
downtime
minor stoppages
rework
prototyping
worker/machine int.
material/machine int.
setup
effective process time 1
effective process time 2
0.00 10.00 20.00 30.00 40.00 50.00 60.00
Effective process time of machine
Process times Lossesminutes
AB12
