Wednesday, July 13, 2011

WORKSTUDY / TIME STUDY / WORK MEASUREMENT:


TIME STUDY / WORK MEASUREMENT:

 Work Measurement may be defined as the application of different techniques to measure & establish the time required to complete a job by a qualified worker at a desired level of performance.
Operation analysis is a detailed study of different operations involved in doing a work.Operation analysis becomes necessary in order to investigate the short comings of the existing method & to develop an improved procedure.

ANALYSIS OF MOTION:
    The purpose of motion analysis is to design an improved method which eliminates unnecessary motion & employs human efforts mor productively.
Steps involved in motion analysis are:
  1. Select the operation to be studied
  2. List & chart various motions performance the operator.
  3. Identify the Productive & Idle motions
  4. Eliminate the unnecessary & non productive motions
  5. Redesign the existing operating procedure by employing minimum number of motions in the most appropriate sequence & in accordance with the principles of motion economy.
STANDARD TIME:
                            Standard Time may be defined as the amount of time required to complete a unit of work under existing conditions, using the specified method & machinery, by an operator able to do the work in a proper manner and at a standard pace.
OT
PRF
PA
RPA
SA
POA






Normal Time
Allowances %
Standard Time

OT- Observed Time
PRF - Performance Rating Factor
PA- Process Allowances
SA - Special Allownces
POA - Policy allowances

Standard Time = (Average Observed Time X Rating %)+Allowances %
Normal Time = (Average Observed Time X Rating %)
ð     Standard Time = Normal Time + Allowances % => N.T + (NT X Allow % /100)

Example:
Calculate the Standard time with the given information:  Average Observed time = 2 min; Rating % = 50 % , Allowances = 15 %
Sol:
      Std Time =Normal time + Allowance %
Normal time = Average Observed Time X Rating %
                       = 2 X 0.5 = 1 min
Standard time = 1 min + 15% =1+0.15 = 1.15 min
Time Study Form
Product:

Time Study Engineer:
Operation:

Date:


Description :










Sl No
Observed Time Stopwatch Reading (Min)
Rating Factor %
Normal Time (min)
Allowance %
Standard Time (min)
1





2





3





4





5





6





7





8





9





10








Average Standard Time=


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