SCHEDULING AND IMPLEMENTATION OF

SCHEDULING IN B.E.S.T.

Group Members :

Sampada Mhaskar : 93Bhagyashri Khale : 68

Shailey Khare : 72Anish Nimbalkar : 102

Sarvesh Matwankar : 89Bhavin Mehta : 90

SCHEDULING

WHAT ?

It is an Important tool for ? Scheduling

It is done for material, part, machines etc.

It is second step to production Planning and control

It comes after routing

It is a time table of

production

It gives lot of importance to the time element in the production process

It gives the starting and completing date

and time for each(job)

OVERVIEW It covers following areas in particular:

- Assign job to particular work center/machine- Time of assignment of Job and completion- Allocation of resources like manpower and materials- Time sequencing of Operations- Feedback and Control functions to take care of Deviations

Techniques of Scheduling varies with the type of layout and type of job like job-shop or batch production and mass production

TYPES OF SCHEDULING Long Term Scheduling Medium Term Scheduling Short Term Scheduling

OBJECTIVES OF SCHEDULING

Making efficient use of the labor

Making best possible use of the equipment that are available for use

Increasing the output

Improving the service level

Increasing the profit

OBJECTIVES OF SCHEDULING (CONTD.)

Maximizing the delivery performance i.e. meeting the delivery dates

Minimizing the inventory

Reducing the manufacturing time

Minimizing the production costs

Minimizing the worker costs

FUNCTIONS OF SCHEDULING Allocation of the resources

Shop floor control

Making maximum use of the plant at minimum possible cost

Ensure that the needs of the manpower are optimum

Determination of the sequence of the jobs

FUNCTIONS OF SCHEDULING(CONTD.)

Specifying the start and the end time for each job (actively scheduled)

Getting quick feedback from the shops regarding the delays and the various interruptions

Possess up – to – date information for the availability of the materials, expected delivery dates etc.

Possess up – to – date data on the machine regarding its breakdown, servicing etc.

MANUFACTURING PROCESS

METHODS OF SCHEDULING1. Forward operations scheduling

Classified on the basis of the time All the activities are scheduled from the date of the planned

order release First task of the job is scheduled Its subsequent task is scheduled on the scheduled completion of

the first task Like this, accordingly all the tasks of the job are scheduled Ex. Hospital, Clinics, Fine Dining restaurants, M/C tool

manufacturer

METHODS OF SCHEDULING (CONTD.)

2. Backward operations scheduling

Also classified on the basis of the time Activities are scheduled from the date or the planned receipt

date The last activity is scheduled first Time of the start of the last task is considered as the time for

the start of the previous activity Ex. Arrangement for special event like marriages, exam studies

etc

Routing

Loading

Dispatching

ACTIVITIES INVOLVED

SCHEDULING CRITERIAS

Minimum completion time

Maximum utilization

Minimum work in progress inventory

Minimize customer waiting time

PRIORITY RULES First come first serve (FCFS)

Shortest processing time (STP)

Earliest due date

Longest Processing Time (LPT)

Slack time remaining (STR)

ADVANTAGES OF SCHEDULING PREDICT-ABILITY :- A scheduling system makes everyone’s

job easier  by  adding  predictability  to  the  AIS  environment To superiors:- it provides a means of holding down costs

through better use of personnel and equipment. Effective use of all AIS resources Increased throughput Decreased turnaround time User deadlines met Improved communications with users Avoidance  of  overloading  and  underuse  of resources Job delays more readily apparent

Scheduling in B.E.S.T.

B.E.S.T. (BRIHANMUMBAI ELECTRIC

SUPPLY AND TRANSPORT) Started in year 1907 Total 4680 bus 365 routes 25 depots 22000 bus drivers and conductors 4.8 million passengers It is considered a second heart of the city

B.E.S.T. SCHEDULING

A. Placement of the Bus Route in new area:

1. Proper route placement The route creation process

2. Identify an area that needs new transit service Determine the terminus locations

3. Other factors Designing the route include the presence of other routes nearby and the type of street the bus will travel upon

Speed bumps, speed humps, or traffic circles should also be avoided

B. Route In Existing Area :

Plan new bus routes operating in areas with existing coverage

These new routes are often have limited stop or express versions of existing local routes

Provide direct service between two trip generator

Service levels increase

B.E.S.T. SCHEDULING(CONTD.)

C. Placement of Bus Stops

Appropriate distance between each bus stop

Placement of bus stops - Pedestrian access

Adopting guidelines which allow for wider stop spacing offers several advantages to the transit system

Site visit to determine the actual placement at the intersection. Bus stops should be located near traffic signals, or at least marked crosswalks

B.E.S.T. SCHEDULING(CONTD.)

D. Determination of time for the Bus

Each route will at the very least have two timing points: the start and end of the route

Optimum number of time points be selected for the route

B.E.S.T. SCHEDULING(CONTD.)

E. Writing the Bus Schedule

What our stops are ? How long it will take to travel between our stops ?

1. Using computer scheduling software The most important benefit of scheduling software lies in its

run cutting function

B.E.S.T. SCHEDULING(CONTD.)

2. For scheduling a particular route two things are important

The service span of the route For existing route – we would consider a demand basedservice span based on the first and last trip.

If no body was riding - reduce the service span.

If a significant no. of people were riding - 50 % or moreconsider the service span.

B.E.S.T. SCHEDULING(CONTD.)

3. Policy based service span and the run cutting process

Policy based service span- specific time periods

The run cutting process- make it easier and more cost effective to schedule the drivers

B.E.S.T. SCHEDULING(CONTD.)

The frequency/headway of the route

1. Demand based headwayHow often buses will pass by a particular point along the route

Minimum number of buses required per hour

Load factor- maximum number of passengers per bus, every seat is full no body is standing-i.e. in the ratio of 1.0

B.E.S.T. SCHEDULING(CONTD.)

2. Policy based headway

Operate a minimal level of service.

All of their routes operate at least every thirty minutes whenever the subway is in operation.

From 4.30 AM to 2 AM Monday to Saturday

From 6 AM to 2 AM on Sunday

B.E.S.T. SCHEDULING(CONTD.)

Once the determination of service span and the headway the actual creation of the schedule is quite straightforward.

By using scheduling software :1. ESRI2. Hastus

B.E.S.T. SCHEDULING(CONTD.)

Thank You !!!