Optimizing Repair Processes: Methods and Time Study

Study Focus: Techniques for systematizing repair processes and improving duration.

Study Methods: Analyzes processes by studying the sequence of movements and operations executed by employees. The study considers all factors impacting the result: job, equipment and tools, facilities, and workers.

Process to Follow for Improvement

• Selecting work to perform
• Record facts
• Examine actions
• Develop a new improved method
• Implement the new method

Record of Activities

This involves recording, through direct observation, all operations and tasks that are part of the job being studied.

Dingbats Actions

• Operation (Round): Performed when changing the properties of a piece during assembly or disassembly.
• Shipping (Arrow): When a piece is displaced.
• Inspection (Square): When reviewing a piece for identification or measurement.
• Delay (Half Circle Right): When the execution of the next activity cannot be immediate.
• Storage (Triangle Down): When a piece is saved.

Diagram of the Process

Main activities involving operations and inspections are plotted sequentially.

Sequence of Operations Diagram

Represents all work activities consistently, including times for each activity or distances traveled.

Process Analysis

Once all information about the work process is recorded, the next step is to analyze it, seeking more effective methods. We use the following questions:

• Who? The aim of this work.
• Why? Why are work steps performed routinely?
• Who Does? Operator training and qualification.
• When? Basic planning for problems.
• How? Analyzing the technical conditions of the process.

Study Time

Standard time determines the time operations should take under normal conditions. Profits achieved using time study include:

• Assessing process duration and setting standard times.
• Observing improvements after a method change.
• Distributing the workload.

Time-Type

Standard length of a systematic process, determined through method study under normal conditions.

Determination of the Time Basis

Establish the duration of work using one of these techniques:

• Estimate: Based on historical data.
• Timing: Direct measurement of real work using a timer.
• Sampling: Random observations at different times during the work.
• Standard Data Table: Times for simple actions obtained from repeated processes.
• Predetermined Time System: Breaking down simple actions into basic movements with established times.