Operation Process Chart (OPC) Peta Proses Operasi

Summary

The video explains the Operation Process Chart (OPC), a key tool in work system design and ergonomics, often used to improve work efficiency. It covers symbols used in OPC, such as circles for operations and arrows for transportation. The example provided is a chair assembly, illustrating the charting process for each component. The video also discusses time study methods and how OPC helps identify time and process improvements. It concludes by comparing current and proposed OPCs, emphasizing efficiency gains through process combination.

Takeaways

• 🛠️ Operation Process Chart (OPC), or Peta Proses Operasi (PPO) in Indonesian, is a systematic tool used to improve work processes by making them more efficient, effective, and faster.
• 🔄 The OPC is used to visualize work systems and simplify them by identifying key processes such as operation, transportation, inspection, delay, and storage, represented by different symbols.
• ⚙️ Operations are represented by a circle, transportation by an arrow, inspection by a cube, delay by a 'D', storage by a triangle, and combined activities by combined symbols.
• ✂️ Operations involve physical or chemical changes, such as cutting or welding materials, while transportation represents the movement of materials from one location to another.
• 🔍 Inspection involves checking and measuring dimensions to ensure product quality, while delay represents waiting times, and storage refers to storing materials or products at different stages.
• 📝 The OPC requires outlining all components and processes involved in making a product. In this example, a study chair with four main components is used as a case study.
• 📐 Each component in the OPC is broken down into steps like measuring, cutting, drilling, and assembling, with operations and inspections listed in sequence.
• ⏱️ Time is measured for each operation and recorded in the chart to calculate total production time, allowing for the identification of inefficiencies.
• 🔄 There are two types of OPC: the current process and the proposed process. The proposed process aims to optimize efficiency by combining steps or reducing time.
• 📊 The OPC helps calculate the time required to complete one product unit and can be used to estimate production capacity, ultimately improving manufacturing efficiency.

Q & A

What is an Operation Process Chart (OPC)?

An Operation Process Chart (OPC) is a systematic tool used to visualize and improve the efficiency and effectiveness of a workflow by mapping out the sequence of operations and processes in a work system.

What are the key symbols used in an Operation Process Chart?

The key symbols in an OPC include a circle for operations, an arrow for transportation, a cube for inspection, a 'D' for delay, a triangle for storage, and a combined symbol for dual activities like simultaneous operation and inspection.

What does the operation symbol (circle) represent in an OPC?

The operation symbol (circle) represents any activity that causes a physical or chemical change in a material or product, such as cutting, welding, or sewing.

What does the transportation symbol (arrow) represent in the OPC?

The transportation symbol (arrow) represents the movement of materials or work-in-process items from one location to another, such as moving items via conveyor belts, vehicles, or by hand.

How does the OPC help in improving a work system?

OPC helps improve a work system by providing a clear understanding of all operations, enabling the simplification of processes, identification of inefficiencies, and opportunities for reducing time and effort.

What is the significance of the inspection symbol (cube) in an OPC?

The inspection symbol (cube) indicates activities related to quality control, where products are checked for defects, measured for accuracy, or assessed with measuring tools.

What does the delay symbol ('D') signify in an OPC?

The delay symbol ('D') signifies periods where work is paused, such as when components are waiting for others to be completed before further assembly can occur.

What are the two types of Operation Process Charts mentioned in the script?

The two types of Operation Process Charts are the current OPC, which shows the existing workflow, and the proposed OPC, which suggests improvements to streamline the process and reduce time.

How can processes be combined in a proposed OPC to save time?

Processes can be combined by performing two tasks simultaneously, such as inspecting a product while performing another operation, which reduces the overall time required.

What is the purpose of the summary section at the end of an OPC?

The summary section of an OPC lists the total number of operations and inspections, along with the total time required to complete the process, providing a clear overview of the workflow's efficiency.