Q4 (a) A manufacturer has the following jobs waiting on asingle work centre. The firm has not decided which dispatching ruleto apply in order to prioritize the jobs and fix them into theschedule. Processing time and due date for each job are in theTable 4 below. Recommend the best job sequence to the manufacturerusing THREE (3) dispatching rules scenario analysis.
Table 4: JobsInformation
JobsInformation | ProcessingTime (days) | Due Date(days) |
Job 1 | 3.25 | 8 |
Job 2 | 4.75 | 7 |
Job 3 | 4.5 | 9 |
Job 4 | 5 | 8 |
Job 5 | 4.5 | 7 |
Job 6 | 3.75 | 10 |
Job 7 | 4.25 | 9 |
Job 8 | 4 | 7 |
- Nuqman established TT Flash Sdn Bhd, to manufacture AutomaticHand-Cleaner Dispenser Station to help curb the spread of Covid-19in the country. The company received 5 orders with different designspecification (Design F, G, H, I & J) that must be completednot more than 29 days. With the TT Flash Sdn Bhd manufacturingcapability, the company estimated 40 days to deliver all thestations. To overcome this issue, Nuqman have call others companyto build the Automatic Hand-Cleaner Dispenser Station and ask eachcompany their estimation time to manufacture each design. Theestimated time information of each design shown in Table 5.
- Suggest to the company with justification the best alternativeavailable for this order.
Table 5:Hand-Cleaner Dispenser Station Manufacturing Time Information
Design (days) |
Company | F | G | H | I | J |
TT Flash | 9 | 5 | 12 | 6 | 8 |
P00 | 7 | 4 | 7 | 7 | 10 |
Q12 | 8 | 7 | 5 | 6 | 11 |
R34 | 6 | 7 | 11 | 10 | 9 |
S56 | 8 | 6 | 10 | 5 | 7 |
- Ranjit, the industrial engineer in the company have recommendto Nuqman for implementing concurrent process for this orders withestablishing two workstation to manufacture the AutomaticHand-Cleaner Dispenser Station, namely fabrication and assembly asshown in Table 6.
Evaluate the aboveproposal by Ranjit whether the company able to meet the orderdemand not more than 29 days.
Table 6:Station Processing Time Information for each workstation
Design | Fabrication(days) | Assembly(days) |
F | 5 | 4 |
G | 2 | 3 |
H | 6 | 6 |
I | 4 | 2 |
J | 5 | 3 |
