2. WORK STUDY
Today’s competitive market industry must be
aware of latest developments for new
technology.
1. By improving the process of manufacture
2. By improving the operation of existing
facilities( Plant and Human)
3. DEFINITION OF WORK
STUDY
Study of human work in all aspects in order to
increase the effectiveness with which work is
done.
Work study aimed to achieving higher
productivity
By finding the most efficient use of available
resource to create output.
4. ELEMENTS OF WORK STUDY
Work study = Method study + Work measurement
Method study = Developing easier and more
effective method.
Work measurement = Time for a qualified worker to
carry out a specific job at different level of
peformance
Work study gives higher productivity.
5. OBJECTIVES OF
WORK STUDY
Most economical way for work
To simplify and standardise the methods,
materials and tools.
Time required for a qualified worker
To plan training program for the worker for
new method.
6. PURPOSE OF WORK STUDY
Raising productivity
Increase productivity without capital
expenditure
It helps to eliminate / reduce waste
Better quality of product at reasonable price
7. Work study procedure (13 mark)
1. Select (job or process selected)
2. Record (record by various techniques)
3. Examine (asking questions who,when)
4. Develop (Economical method)
5. Measure (amount of work involved)
6. Define (new method)
7. Install (new method standard pratice)
8. Maintain (proper control the above pratice)
8. METHOD STUDY
Systematic analysis for the better utilisation of
resources
It is developing better method for doing a
job.
Other wise called as method engineering,
Method analysis, Work improvement
9. Objectives of Method study
To improve process and procedures
To improve design plant and equipment
Improve plant layout
Improve men , material.
Standardise methods
Improve safety methods
10. Basic procedure for method
study (13 Mark)
1. Select (job or process selected)
2. Record (record by various techniques)
3. Examine (asking questions who,when)
4. Develop (Economical method)
5. Define (new method)
6. Install (new method standard pratice)
7. Maintain (proper control the above pratice)
11.
12. 1) SELECTION OF JOB FOR METHOD STUDIES
1) Economic considerations:
Waste of time for long investigation
Operations involved excess man power
By tracking materials
Repetative work
Operations having poor utilisation of resources
2) Techinical consideration:
To ensure adequate technology is available to carry out
the study successfully.
3) Human reactions:
All concern persons accept the method study for
improve.
13. 2) RECORD
After selection the job record the Relevant facts of
existing methods.
RECORDONG METHODS
CHARTS
Outline process chart
Flow process chart
Multiple activity chart wth time scale
Simo chart
CHARTS AND DIAGRAMS
Flow diagram
String diagram
14. 3) EXAMINE
Relevant informations and procedures are recorder
next stem examine that.
CRITICAL QUESTIONS
1. PRIMARY QUESTIONS
2. SECONDARY QUESTIONS
4) DEVELOP
Evaluate successfully the four step formula are
1. Eliminate all un necessary operations
2. Combine two or more operations
3. Sequence of various activities
15. 5) DEFINE NEW METHOD
By analysing the above methods We Define newer
method by agreeing the various workers and
management.
6) INSTALL NEW METHOD
Install new method
Train the workers for the new method
The proposed method was accepted by supervisors, etc.
7) MAINTAIN THE PROPOSED METHOD
Adopting various monitoring techniques
Data collection and interruption
Feed back from evaluated reports
16. RECORDING TECHNIQES
(13 mark)1. CHARTS
1. METHOD STUDY
2. PROCESS CHARTS
1. OUTLINE PROCESS CHARTS
2. FLOW PROCESS CHARTS
3. TWO HANDED PROCESS CHARTS
2. DIAGRAMS
1. FLOW DIAGRAM
2. STRING DIAGRAM
3. TRAVEL CHART
4. CYCLE GRAPH
18. TRANSPORT (movement of workers, equipments )
DELAY (Temporary storage)
STORAGE (PERMANENT STORAGE)
19. PROCESS CHART
1) OUTLINE PROCESS CHART
It is otherwise called as operation process chart
Overall view of the whole process
INPUT- OPERATION- OUTPUT
20.
21. 2) FLOW PROCESS CHART
It includes graphical representation of ALL
OPERATIONS, INSPECTIONS, DELAYS,
STORAGES etc.,
DEF: Sequence of flow of product or
procedure
TYPES OF FLOW CHART
Flow process chart (Man type)
Flow process chart (Material type)
Flow process chart (Equipment type)
25. TWO HANDED PROCESS
CHART
Other wise called as left and right handed process
chart
Activities of the worker’s hand are recorded
To eliminate the unwanted motion to minimum
ADV:
Balance the motion and reduce fatigue
To eliminate and reduce motions
Train new operations in ideal method
26.
27.
28. CHARTS USING TIME SCALE
1) MULTIPLE ACTIVITY CHART:
It is a chart more than one subject(men, machine, item)
are recorded on a common time scale
USES OF MULTIPLE ACTIVITY CHART:
To analyses ideal time of men and machine.
Determine number of machines handle by an operator
IMPORTANT TYPES OF MULTI ACTIVITY CHART:
1. Man machine activity(1 operator, 1 machine)
2. Multi man activity(many operators, 1 machine)
3. Man-multi machine activity(1 operator, many machine)
4. Multi machine activity chart (group of operators
,central machine)
29. 2) SIMO chart (SIMULTANEOUS MOTION
CYCLE CHART)
Record the activities, of two hands or other parts.
SIMO chart constructed from Data collected motion flim
analysis
THERBLINGS
Therblings are the symbols used to denote various
activities and movements done for different purpose.
32. DIAGRAMS
1) FLOW DIAGRAMS:
Plan drawing in a working area, showing a
location of various activities by symbols.
CONSTRUCTION PROCEDURE:
Draw the work area
Mark the positions of tools, benches
Trace the path
Indicate the direction of movement
Different colours for the different type of movement
35. STRING DIAGRAM
It is a scale plan or model THREAD is used to
trace and measure the path of materials ,
machine in define path.
36. TRAVEL CHART
A travel chart is a tabular record for presenting
quantitative data about the movement of
workers , materials or equipment between any
number of places over any given period of
time.
37.
38. CYCLE GRAPH
The techniques are developed by Gilberth.
It is the record of path movement , Usually
traced by continuous source of light on
photograph.
For these small electric bulb is attached to the
hand or finger, the motion can be recorded.
39. CHRONOCYCLE graph is a special form of
cycle graph in which light source is suitable
interrupted so thet path appears peer- dot
shaped.
40. PRINCIPLES OF MOTION
ECONOMY
These principles are developed from improved
methods
These principles are groped in to THREE
headings
1. Use of human body
2. Arrangement of workplace
3. Design of tools and equipment.
41. Principles with the use of HUMAN BODY
Two hands should began and end their movements in same
time.
Two hands should not be ideal at same time
Hand motions should symmetrically opposite direction
Momentum should be help of the worker during work
Countineous curved movements preferred to straight line
motions during sudden changes in direction.
Free swinging movements are faster for controlling
movements
Work should be arranged to eye comfort for easier work
42. PRINCIPLES OF THE ARRANGEMENT
OF WORKPLACE
Fixed station to provide all tools
Pre position of tools to reduce searching
Scrap bins are closer to the working area
Tools should be arranged permit for the best
sequence
Ejectors should provide whenever possible for
disposal purpose.
43. PRINCIPLES OF TOOLS AND EQUIPMENTS
Equipments are fixed by using jigs and fixtures.
Two or more tools should be combined whenever
possible
Load should be distributed accordingly for the
type writing purpose
Handles such as large screw drivers are designed
for easy handling purpose
Levers , crossbars , handwheels are places for a
mechanical advantage.
44. MICRO MOTION STUDY
(8mark)
It is a detailed motion study employing either
video taps, or motion pictures operating in a
constant speed.
Picture camera is utilized for study, then the
procedure is known micro motion study
45. MICRO MOTION STUDY
PROCEDURE
1. Filming the operation to be studied
2. Analysing the films
3. Recordings/ presenting the data.
Filming the operation
16mm movie camera
Other equipments like, reflectors, exposure meter
46. 2)ANALYSING THE FILMS
Once the operation over film is viewed through
projector.
1. Film is run at normal speed to get the movement
involved
2. A regular work cycle( process) is selected among
the film
3. Film is run at very slowly for backward purpose.
3) RECORDING / PRESENTING THE DATA
Once the film analysis over
Next to prepare SIOM chart for the micro
motion of limbs
47. PURPOSE OF MICRO MOTION AND ITS
ADVANTAGES
To study the nature and path of movements
To study the activities of the machine and operator
To keep permanent record of most efficient way of
performing task
Carry out research in the field of method and time
study
ADVANTAGES:
It gives very accurate time for operation
Fast, short , repetitive cycles by this process
Easy comparison of present method and proposed
method
48. MEMO MOTION
(8 mark)
It is developed by Marvin Mudrel
It is special type of micro motion,
ACTIVITIES ARE FLIMED AT SLOWER
SPEED 60 or 100 frames per second.
It is best suited for many activities
For quantity checking purpose in continues
production activity in company.
49. PROCEDURE OF MEMO MOTION STUDY
1. Study of operations to be filmed
2. Obtain the film
3. Analysis the film
4. Construct a suitable chart depending up on the
nature of the film
5. Improve the methods by using the motion
economy
50. PURPOSE OF MEMO MOTION STUDY AND
ADVANTAGES
To study job involving cycles
To study team work and create activities
To study flow of material
Analyses the material handling
For collecting motion time data
ADVANTAGES:
More economical than micro motion study
Consumes less film
Film analyses in smaller time than micro motion stud
51. WORK MEASUREMENT
It is also known as TIME STUDY
Time for a specific job for a worker
USES OF WORK MEASUREMENT:
To determine time standards
Alternate method for doing a job
Eliminate in effective time
Estimate the cost of the product
To determine staff and product requirements
52. TECHNIQUES OF WORK MEASUREMENT
1. Stop watch time study(It deals with time and
rate of working)
2. Work sampling( Large number of
observations from random samples)
3. Pre determined time standards
(PTS)(Basic human motion for increase in
peformance)
4. Standard data.( Time for a job in
countineous process )
53. Stop watch time study
It is a measurement technique
Records the time and rates of working for the
elements of a specified job.
TIME STUDY EQUIPMENT
Stop watch
Electronic devices
Motion picture camera
54. STOP WATCH
To measure the elemental timings
It has two hands
i) Small hand (one revolution in 30 min)
Ii) Large hand (One revolution in one minute)
TYPES OF STOPWATCH
Non-fly back
Fly back
55. Non-fly back (continuous )
First pressure on winding knob Starts the long
hand
Second pressure stops the long hand
Third pressure returns hand to Zero position
Fly back
Start and stop with the help of slide
Pressuring the wind knob brings the hand back to zero.
57. BASIC TIME STUDY
PROCEDURE
SELECT (The job to be studied)
OBTAIN & RECORD (All the details about the job
and operator)
BREAK DOWN (the job into suitable elements)
MEASURE (Time duration for each element and
assess the rating)
EXTEND ( Observed time into normal time)
DETERMINE (The allowances to be made)
COMPUTE (The standard time by adding allowances
to normal time)
58. Breaking the job in to elements
After collecting the data, breaking the job in to
elements
REASON
Ensure that production work is efficient
Better and accurate performance rating.
To identify different types of elements
To checking the method
59. Types of elements
1. Repetitive elements (Start, loading , stop the
machine)
2. Occasional elements (Not doing every time
Eg: cleaning)
3. Constant elements (checking by using things ;
gauging diameters)
4. Variable elements ( It varies not a constant)
5. Manual elements ( Performed by worker)
60. 6. Machine elements (performed automatically)
7. Governing elements (Major working eg:
Turning dismeter)
8. Foreign elements (Not in a regular activity,
Eg: talking to his friends)
61. METHOD OF TIMING WITH
THE STOP WATCH
1. FLYBACK TIMING
1. Complete the time for element.
2. The work finish watch stops
3. Repeat the process.
2. COUNTINEOUS TIMING
1. Start the beginning in the first element and ends
with the last of the process.
62. PERFORMANCE RATING
Process of adjusting the actual time of working of
an operator by the normal speed.
ALLOWANCES:
It is an amount of time added to the normal time to provide for
personal delays
TYPES OF ALLOWANCES:
1. Relaxation allowances
1. Personal need allowances
2. Fatigue allowances
2. Contingency allowances (Unavoidable delays)
3. Process allowances
4. Interference allowances (Two or more work doing)
65. WORK SAMPLING
Analyising work performance and machine
utilization
Large number of observations at random
intervals for a specified group of workers.
66. WORK SAMPLING
PROCEDURE
1. Preparing the work sampling
2. Performing the work sampling
3. Evaluate and present results of work sampling
USES OF WORK SAMPLING
1. Determination and time standards
2. Aid of job evaluation
3. Aid of manpower
67. ADVANTAGES OF WORK
SAMPLING
Studies of several operations and machines
continuously
Analyst can study the many activities
Any interruption during study
LIMITATIONS:
Not economical of short job duration
Not provide a complete break down elements
during time study
68. SYNTHETIC DATA
(SYNTHESIS FROM STANDRD DATA)
SYNTHETICS:
Level of performance
From previously time studies
SYNTHETIC DATA:
Analysis of the work measurement in the form of
tables and formulas
69. PROCEDURE FOR
SYNTHESIS DATA
1. Collect all the details
2. Analyise job in elements
3. Select appropriate time for covering factors
4. Detailed analysis of a job
5. Total time , ratings, allowances for a standard
job
70. PREDETERMINED MOTION
TIME STANDARDS (PMTS)
Set of time data observed from a workers
performance
Human task can be sub divides in to various
performance and motions
By arranging the basic motions existing task
can be analyses.
71. TYPES OF PMTS
1. METHOD TIME ANALYSIS ( It is relation
ship between time and motion )
2. WORK FORCE SYSTEM ANALYSIS
(Manual task by the pre determined data)
3. METHOD TIME MEASUREMENT
(Acceptable data for scientific measurement
of human effort)
72. PURPOSE OF (PTMS)
Useful method analysis
Modifying and improving works before work
start
Set time standards for different job
Basic wages and labor cost estimation