Saturday, November 23, 2013

Methods Efficiency Engineering Studies - Detailed to Brief

The more detailed the study, "the greater the amount of time required to make it. With any study, the savings effected must equal or exceed the cost of making the study if the expenditure is to be justified from an economic standpoint.

Type A.

Written job analysis using one or more types of process charts and
analysis sheets.
Motion study employing motion pictures.
Motion time study.
Standardization including motion-picture training.
Time study.

Type B

Written job analysis using analysis sheets.
Motion study by analysis and observation.
Standardization including written instructions.
Time study.

Type C
Mental job analysis.
Standardization including verbal instructions.
Time study.

Type D

Written job analysis of class of work using process charts and analysis
sheets for analysis of representative jobs.
Motion study of representative jobs, usually employing motion
pictures to determine best methods.
Standardization including written instructions.
Time study.
Time formula.

Type E

Mental job analysis during general survey of work.
Motion study by analysis and observation during general survey.
Time study.
Time formula.

Type F

Standard data.

Types A, B, and C are applied particularly to individual jobs. Types D and E are applied to classes of work comprised of similar jobs, and type F is applied to either individual jobs or classes of work where quantities are very small.

The kind and the amount of study that are economically justified on any job or class of work are determined by three principal factors, namely, the repetitiveness of the job, the man-machine content, and the expected life of the job.

Source: Operation Analysis, Chapters 4 and 5, Maynard)

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