TCP, PERT, Gantt: Maintenance Optimization Techniques

How to Use TCP

Archive all sheets from computers on a production line. Create two files: one for mechanical parts and another for electrical parts. Organize sheets by teams and technical positions. Index all pages and place the index at the beginning for easy location.

When changing an element in the table, make a corresponding annotation. Establish a control period to meet maintenance system needs.

TCP (Technical Control Procedures)

Document the preventive maintenance system, indicating:

• Parts or assemblies to be changed and special inspections.
• Change or inspection period.
• When parts were changed or inspected in the past.
• Tentative next change or inspection.

TCP information helps develop maintenance and spare parts replenishment programs.

TCP provides:

• Assembly number.
• Execution procedure number.
• Work order number describing the change or special inspection.

Maintenance should focus on changes in high-cost parts, those difficult to resupply, and those with major impact on delays. Components that don't cause significant delays, are easy to provide, or have low costs are not included in TCP.

All elements in TCP should be subject to an inspection system, including routine operation or special (non-operating) inspections.

PERT (Program Evaluation and Review Technique)

PERT allows using the time for work performance involving different specialties that must follow a set order. Collected information must be understandable and summarized.

Activities can be represented by circles and execution time by arrows, forming a mesh network where activities are at the edges and time is represented by the sides of the junction.

Gantt Chart

The Gantt chart is a tool with detailed information, controlling planned and actual work progress. It shows planned activities at the top and actual progress at the bottom.

Unlike a bar chart, it provides more information using specific symbols from PERT.

PERT/TIME

Program Evaluation and Review Technique

Graphical representation of activities in sequential order, showing maximum and minimum execution times.

Objectives:

• Plan, arrange, and schedule activities or projects.
• Determine the critical path and identify activities where delays affect total project time.
• Standardize representation for understanding by all project staff.