Circuit Board Fabricators, Inc
Circuit Board Fabricators, Inc.
CBF hired you to help determine why it is not able to produce the 1,000 boards per day.
1. What type of process flow structure is CBF using?
2. Diagram the process in a manner similar to Exhibit 6.7.
3. Analyze the capacity of the process.
4. What is the impact of the losses in the process in Inspection and Final Test?
5. What recommendation would you make for a short-term solution of CBF’s problems?
6. What long-term recommendations would you make.
1. Manufacturing cell. 2. See below. 3. If you figure the run time for minutes per part divided by the number of employees the processes that take the most time are the clean, coat, and the final test. You would have to increase the # of machines to cut down on the time to clean and coat or increase the # of machines and employees to cut down on final test time. 4. The impact of losses in the inspection and final test are wasted boards and wasted machine and employee time that was put into the boards. If 15% are rejected in the inspection that is 4.04 minutes in wasted machine/employee time per part that is rejected. If 5% of boards are rejected in the final test that is the 4.04 minutes per part wasted and an additional 2.36minutes in wasted time for 5% of the 85% of boards that made it through the inspection. 5. My recommendation would be to offer overtime for a short term solution to the problem. A more drastic short term solution would to include an overnight shift that could double the output without increasing the number of machines. 6. For a long term solution I would suggest to cut down on the bottlenecks in the process which are the clean, coat, and final test which take the longest. I would suggest one more of each the clean and coat machines and two buy 2 more final test machines and 2 more employees to conduct them.
Finished orders are packed and shipped.
Good boards are loaded onto the cart to take to the shipping area and bad
CBF hired you to help determine why it is not able to produce the 1,000 boards per day.
1. What type of process flow structure is CBF using?
2. Diagram the process in a manner similar to Exhibit 6.7.
3. Analyze the capacity of the process.
4. What is the impact of the losses in the process in Inspection and Final Test?
5. What recommendation would you make for a short-term solution of CBF’s problems?
6. What long-term recommendations would you make.
1. Manufacturing cell. 2. See below. 3. If you figure the run time for minutes per part divided by the number of employees the processes that take the most time are the clean, coat, and the final test. You would have to increase the # of machines to cut down on the time to clean and coat or increase the # of machines and employees to cut down on final test time. 4. The impact of losses in the inspection and final test are wasted boards and wasted machine and employee time that was put into the boards. If 15% are rejected in the inspection that is 4.04 minutes in wasted machine/employee time per part that is rejected. If 5% of boards are rejected in the final test that is the 4.04 minutes per part wasted and an additional 2.36minutes in wasted time for 5% of the 85% of boards that made it through the inspection. 5. My recommendation would be to offer overtime for a short term solution to the problem. A more drastic short term solution would to include an overnight shift that could double the output without increasing the number of machines. 6. For a long term solution I would suggest to cut down on the bottlenecks in the process which are the clean, coat, and final test which take the longest. I would suggest one more of each the clean and coat machines and two buy 2 more final test machines and 2 more employees to conduct them.
Finished orders are packed and shipped.
Good boards are loaded onto the cart to take to the shipping area and bad