SOLVED

21) Which one of the following is NOT necessary to identify the optimal maintenance policy? A) historical data on maintenance costs B) cost of performing the analysis C) breakdown probabilities D) breakdown occurrences E) repair times 22) DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats. One of their CNC machines has caused several problems. Over the past 30 weeks, the machine has broken down as indicated below. Number of breakdowns per week 0 1 2 3 4 Frequency (Number of weeks that breakdowns occurred) 8 3 5 9 5 What is the expected number of breakdowns per week? A) 1 B) 2 C) 6 D) 10 E) 30 23) DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats. One of their CNC machines has caused several problems. Over the past 30 weeks, the machine has broken down as indicated below. Each time the machine breaks down, the firm loses an average of $3,000 in time and repair expenses. Number of breakdowns per week 0 1 2 3 4 Frequency (Number of weeks that breakdowns occurred) 8 3 5 9 5 What is the expected breakdown cost per week? A) $1,000 B) $2,000 C) $6,000 D) $10,000 E) $60,000 24) DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats. One of their CNC machines has caused several problems. Over the past 30 weeks, the machine has broken down as indicated below. Each time the machine breaks down, the firm loses an average of $3,000 in time and repair expenses. If preventive maintenance were implemented, it is estimated that an average of only one breakdown per week would occur. The cost of preventive maintenance is $1,000 per week. Number of breakdowns per week 0 1 2 3 4 Frequency (Number of weeks that breakdowns occurred) 8 3 5 9 5 What is the weekly total maintenance cost of this program? A) $1,000 B) $3,000 C) $4,000 D) $6,000 E) $8,000 A) operator maintenance is slower than depot service. B) competence is higher, but costs may also be higher, with depot service. C) depot service is often the weak link in the chain because of the lack of specific training. D) depot service occurs on-site, while operator maintenance occurs off-site. E) depot service is better for systems connected in parallel, while operator maintenance is preferred for systems connected in series. 26) Which of the following increases as repairs move from the maintenance department to the depot service? A) cost B) replacement time C) competence D) operator ownership E) A, B, and C A) employees are empowered to observe, check, adjust, clean, and notify. B) a remote computer system signals the need for breakdown maintenance. C) a remote computer system signals the need for preventative maintenance. D) employees perform their own breakdown maintenance. E) none of the above 28) ________ is a plan that involves routine inspections, servicing, and keeping facilities in good repair to prevent failure. 29) ________ is the failure rate early in the life of a product or process. 30) The ________ takes into account such costs as deteriorated customer relations and lost sales.