Calculation
| Stops avoided per year | 5 per week x 50 weeks = 250 |
| Press hours no longer lost | 250 stops x 1.2 hours = 300 |
| What those press hours are worth | 300 hours x $55 x 70 percent filled by orders = $11,600 |
| Plastic no longer scrapped | 250 stops x 25 lb x $1.50 per lb = $9,400 |
| Cost of planned cleaning | 3 hours per week x 50 weeks x $48 per hour = $7,200 |
| What fixing it could save per year | $11,600 + $9,400 - $7,200 = $13,700 |
Assumptions
| Value | ||
|---|---|---|
| Stops avoided on the eight molds that stop most | 5 per week | |
| Press hours lost at each stop | 1.2 hours per stop | |
| Plastic scrapped at each stop | 25 lb per stop | |
| Mold shop hours added for planned cleaning | 3 hours per week | |
| Cost of one mold shop hour | $48 per hour | |
| Price of one counter for a mold | $100 | |
| Press hours lost waiting for parts | 2 hours per week | |
| Spare parts kept for one mold | $300 | |
| Price of resin | 1.5 $/lb | |
| Value of one more running press hour | $55 per hour | |
| Share of freed press hours that orders fill | 70 percent |
Stops avoided on the eight molds that stop most
5 per week
Press hours lost at each stop
1.2 hours per stop
Plastic scrapped at each stop
25 lb per stop
Mold shop hours added for planned cleaning
3 hours per week
Cost of one mold shop hour
$48 per hour
Price of one counter for a mold
$100
Press hours lost waiting for parts
2 hours per week
Spare parts kept for one mold
$300
Price of resin
1.5 $/lb
Value of one more running press hour
$55 per hour
Share of freed press hours that orders fill
70 percent