5:15 PM
STANDARD MINUTE VALUE (SMV)
SMV
means the time that it takes a worker to complete a specific operation or
produce a specific garments.
It is a
numerical value which is represented the standard time of a process or
operation in a standard environment for standard worker.
A
Standard Time
The work content of a job includes an allowance for adequate rest for that job.
‘Standard time’ is the average for one cycle of an
operation that we would measure over a typical day if we had:
- · A skilled operative
- · Adequate incentives to call form the operatives’ best efforts.
- · Plenty of work so that the operator is not necessary to wait for work.
- · The workplace and the machinery for which the standard time was specified
- · Output at the correct level of quality
- · Time allowed for the operative’s personal needs and to overcome fatigue
- · Expected delays, due to minor machine maintenance, thread changes etc:
When we measure this
standard time in minutes, we call it as Standard Minute Value.
|
Standard
Minute Value (SMV) = Basic Time + Allowances
|
Observed Time ×Observed rating
Basic Time =
Standard Rating
In the British standard the standard rating is 100%
Calculate the basic
times
|
Observed time in minutes
|
0.25
|
0.31
|
0.09
|
0.22
|
|
Observed Rating %
|
80
|
90
|
110
|
105
|
Answers: The basic time
should be 0.20, 0.28, 0.10, and 0.23 minutes.
Steps of calculate SMV:
Let, Basic
time=A & Allowances=10%
SMV=A+10% of A
=A
(1+0.10)
=A*1.10
Ø Rating
When an operator performs any activity, the time taken depends not only
on the activity itself but also on the speed and effectiveness of the operator.
This effectiveness is assessed in relation or comparison to the effectiveness
of a standard operator. This assessment is termed as rating.
The concept of rating is merely an extension of assessing performance as
fast or slow: It involves the comparison between an actual pace of working and
the conception of standard pace in the mind of the observer. Rating is not a
measurement but an assessment. Therefore it is always a subjective observation
of the operator by the observer, converted to the objective calculation of the
operation. With lot of training and experience this mental comparison can give
a reliable indication of performance.
Compare
the effectiveness of the observed worker in terms of…
Skill
- The techniques apply to perform the job
Effort-
Expression of the will to work efficiency
Symptoms of skilled
work
ü Avoidance
of all unnecessary motions
ü Shortest
path of movements
ü Sureness
of touch & movements
ü Consistently
stick to the best method
ü Consistently
cycle times
ü Intelligent
anticipation of the next move
Symptoms of poor
skill
ü Lack
of rhythm
ü Inconsistency
ü Jerky
movements
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