Sequencing Jobs with Priority Rules.pptx

814 views 10 slides Jul 21, 2022
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About This Presentation

Watch the video lecture on this PowerPoint topic by going to the below link:

https://youtu.be/HTEdlvag2SQ

This slide is about job sequencing in a manufacturing operation with priority rules as mentioned;
First Come First Served
Earliest Due Date
Shortest Processing Time
Longest Processing Time


Slide Content

SEQUENCING JOBS Job Job Work Time (Days) Due Date (Days) A 6 8 B 2 6 C 8 18 D 3 15 E 9 23 HINDI URDU

Sequencing and Priority Rules There are priority rules to carry out the jobs especially applicable for process-focused facilities and manufacturing job shops. Below are the priority rules; FCFS : First come, first served. Jobs are completed in the order they arrived. SPT: Shortest processing time. Jobs with the shortest processing times are assigned first. EDD: Earliest due date. Earliest due date jobs are assigned first. LPT: Longest processing time. Jobs with the longest processing time are assigned first. Sequencing is Determining the order in which jobs should be done at each work center.

Performance Criteria  

Problem Solution Job Job Work (Processing) Time (Days) Job Due Date (Days) A 6 8 B 2 6 C 8 18 D 3 15 E 9 23 The FCFS sequence shown in the next table is simply A–B–C–D–E.

FCFS Rule

SPT Rule Job Job Work (Processing) Time (Days) Job Due Date (Days) A 6 8 B 2 6 C 8 18 D 3 15 E 9 23

EDD Rule Job Job Work (Processing) Time (Days) Job Due Date (Days) A 6 8 B 2 6 C 8 18 D 3 15 E 9 23

LPT Rule Job Job Work (Processing) Time (Days) Job Due Date (Days) A 6 8 B 2 6 C 8 18 D 3 15 E 9 23

FCFS vs SPT vs EDD vs LPT LPT is the least effective measurement for sequencing. SPT is superior in 3 measures, and EDD is superior in the fourth (average lateness).

THANKS Watch complete video clearing all concepts mentioned above; https://www.youtube.com/watch?v=HTEdlvag2SQ