Problem IT5 In a production cell dedicated to the production of a product family, the following data corresponding to 10 working days have been obtained (the working time is 24/7). The theoretical production was 14,500 units per day. Day 1 2 3 4 5 6 7 8 9 10 Breakdowns (h) 2 5 2 3 Setup time (h) 2 1 2 2 2 3 4 Defects (units) 100 150 200 100 150 220 130 80 140 200 Total production 12,000 13,280 11,300 12,100 14,000 13,000 12,300 11,900 13,100 11,700 (units) After a large technical investment, a new theoretical production rate of 20,000 units per day was fixed. After 10 working days, the following data were collected: Day 1 2 3 4 5 6 7 8 9 10 Breakdowns (1) 3 4 4 1 Setup time (h) 3 2 2 3 2 2 2 Defects (units) 200 250 100 130 230 125 240 320 100 180 Total production 15,000 13,200 15,600 14,800 15,200 14,800 12,000 15,600 15,100 14,900 (units) 1. How has this changed the overall equipment efficiency (OEE) rate? 2. Has this change been worth the technical investment