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Supply chain management case study Appleton Pulp and Paper Mill Appleton Corporation is one of the largest forest-products companies in the world, converting trees into
Supply chain management
case study
Appleton Pulp and Paper Mill Appleton Corporation is one of the largest forest-products companies in the world, converting trees into three basic product groups: (1) building materials, such as lumber and plywood; (2) white paper products, including printing and writing grades of white paper: (3) brown paper products, such as liner- board and corrugated containers. Given the highly competitive markets within the forest-products Industry, survival dictates that Appleton maintains its position as a low-cost producer of quality products. That requires an ambitious capital program to improve the timber base and to build modern, cost-effective timber conversion facilities. An integrated pulp and paper mill is a facility in which wood chips and chemicals are processed to produce paper products or dried pulp. First, wood chips are cooked and bleached in the pulp mill; the resulting pulp is piped directly into storage tanks, as shown in Exhibit 10.11. From the storage tanks the pulp is sent to either the paper millor a dryer. Any excess pulp not allocated to the paper millor dryer is stored in the storage tanks until the next day. In the paper mill, the pulp is converted to finished paper products. Alternatively, the pulp is sent to a dryer, and the dried pulp is then sold to paper mills that do not have the capability of producing their own pulp. The profit margin is higher for dried pulp, so it is important to fully utilize the dryer capacity. The total system is a large facility costing several hundred million dollars. EXHIBIT 10.11 Pulp and Paper Process Paper mal Paper products Wood chips Pula mill Storage taris Chemicals Dried DUD Pup dryer The pulp mill has a capacity of 800 tons per day (TPD), the paper mill has a capacity of 600 TPD of pulp use, and the dryer can handle 200 TPD. However, all of the equipment in the mill is subject to downtime for maintenance and reliability breakdowns. The pulp mill is assumed to have an average of 10 percent downtime. The actual downtime varies between 0 and 20 percent each day. For example, one day the pulp mill might be down 2 percent of the time, the next day 20 percent, and so on. In the paper mill, downtime averages 5 percent of the total working hours and may vary between 0 and 10 percent each day. Dryer downtime aver-ages 15 percent and may vary from 0 to 30 percent each day. (Such situations can be modeled as uniform probability distributions; see Supplements A, Probability and Statistics, and G, Simulation.) Because of downtime, any pulp that has been allocated to the paper millor dryer but cannot be produced is discarded. Criteria #1 Case Question What will happen to the estimated amount of pulp lost per month if (treat each question independently of the others) a. the pulp mill capacity decreases to 700 from the base case? b. pulp mill capacity increases to 900 from the base case? c. pulp mill capacity increases to 1,000 or more from the base case? d. the paper mill capacity increases to 700 from the base case? e, storage tank capacity increases to 1,000 from the base case? f. dryer capacity is increased to 300 from the base case? Explain what effect this has on paper mill production. Criteria #2 Case Question Using the results from question 2, summarize the impact of increasing capacities at the pulp mill, pa-per mill, dryer, and storage tank from the base case. Criteria #3 Analysis Students will provide their and feedback as to how they would have dealt with the Issues/situation/challenge in the case study as if they were the operations manager of the organization discussed In the case. Appleton Pulp and Paper Mill Appleton Corporation is one of the largest forest-products companies in the world, converting trees into three basic product groups: (1) building materials, such as lumber and plywood; (2) white paper products, including printing and writing grades of white paper: (3) brown paper products, such as liner- board and corrugated containers. Given the highly competitive markets within the forest-products Industry, survival dictates that Appleton maintains its position as a low-cost producer of quality products. That requires an ambitious capital program to improve the timber base and to build modern, cost-effective timber conversion facilities. An integrated pulp and paper mill is a facility in which wood chips and chemicals are processed to produce paper products or dried pulp. First, wood chips are cooked and bleached in the pulp mill; the resulting pulp is piped directly into storage tanks, as shown in Exhibit 10.11. From the storage tanks the pulp is sent to either the paper millor a dryer. Any excess pulp not allocated to the paper millor dryer is stored in the storage tanks until the next day. In the paper mill, the pulp is converted to finished paper products. Alternatively, the pulp is sent to a dryer, and the dried pulp is then sold to paper mills that do not have the capability of producing their own pulp. The profit margin is higher for dried pulp, so it is important to fully utilize the dryer capacity. The total system is a large facility costing several hundred million dollars. EXHIBIT 10.11 Pulp and Paper Process Paper mal Paper products Wood chips Pula mill Storage taris Chemicals Dried DUD Pup dryer The pulp mill has a capacity of 800 tons per day (TPD), the paper mill has a capacity of 600 TPD of pulp use, and the dryer can handle 200 TPD. However, all of the equipment in the mill is subject to downtime for maintenance and reliability breakdowns. The pulp mill is assumed to have an average of 10 percent downtime. The actual downtime varies between 0 and 20 percent each day. For example, one day the pulp mill might be down 2 percent of the time, the next day 20 percent, and so on. In the paper mill, downtime averages 5 percent of the total working hours and may vary between 0 and 10 percent each day. Dryer downtime aver-ages 15 percent and may vary from 0 to 30 percent each day. (Such situations can be modeled as uniform probability distributions; see Supplements A, Probability and Statistics, and G, Simulation.) Because of downtime, any pulp that has been allocated to the paper millor dryer but cannot be produced is discarded. Criteria #1 Case Question What will happen to the estimated amount of pulp lost per month if (treat each question independently of the others) a. the pulp mill capacity decreases to 700 from the base case? b. pulp mill capacity increases to 900 from the base case? c. pulp mill capacity increases to 1,000 or more from the base case? d. the paper mill capacity increases to 700 from the base case? e, storage tank capacity increases to 1,000 from the base case? f. dryer capacity is increased to 300 from the base case? Explain what effect this has on paper mill production. Criteria #2 Case Question Using the results from question 2, summarize the impact of increasing capacities at the pulp mill, pa-per mill, dryer, and storage tank from the base case. Criteria #3 Analysis Students will provide their and feedback as to how they would have dealt with the Issues/situation/challenge in the case study as if they were the operations manager of the organization discussed In the caseStep by Step Solution
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