Why Redundancy is the Lifeline of Semiconductor Manufacturing? The “Dual-Backup” That Prevents Production Stop During Equipment Failures.

In modern semiconductor factories, redundancy (duplication) of gas detection systems is an indispensable critical function. 
The reason is that it directly solves operational challenges on-site. Redundancy enables automatic switching to backup equipment, eliminating the need for emergency calls during nights or holidays even in the event of unexpected equipment failure.
This reduces the need for sudden troubleshooting, enabling operations centered on planned maintenance. Consequently, it significantly contributes to reducing the burden on on-site personnel and controlling labor costs.

All of this is based on the fundamental premise of “never stopping the production process.”
In the semiconductor manufacturing process involving hundreds of steps, a single line stoppage results in the disposal of expensive in-process wafers. The time lag for recovery causes massive losses ranging from tens of thousands to millions of dollars.
To achieve both “reducing the burden on-site” in daily operations and “avoiding massive opportunity losses” in the event of an emergency, modern gas detectors are required not only to “measure accurately” but also to ensure “production lines never stop, no matter what,” through redundancy.

For general industrial equipment, repairs can be made after a failure occurs. In semiconductor processes, the operation continues 24 hours a day, 365 days a year, and the shutdowns for repairs are not acceptable.
Particularly alarming is the situation where the entire system shuts down simply because “one small component” inside the gas detector fails. Suppose the “pump” that samples in gas or the “power supply” malfunctions. The detector then determines it cannot perform normal monitoring, identifies an error, and sends out a fault alarm (trouble signal). Continuing production while gas monitoring is interrupted is not acceptable under factory safety management regulations. Consequently, this forces operators to manually stop the line to ensure safety or interrupt the manufacturing process for emergency maintenance. Safety equipment causing production stoppages due to its own failure represents a significant risk that cannot be overlooked from a business management perspective.

To avoid this risk, it is crucial to implement system redundancy—that is, a “dual backup” system. By pre-installing spare pumps or power supplies, a system ensures that if one fails, the other immediately takes over its function, eliminating the need to stop the system. Riken Keiki's “FPM-80A” is a multi-point gas detector specifically designed to achieve this goal of “keeping production lines running,” based on sales of over 30,000 tape-type gas detectors.

The FPM-80A is a large-scale model capable of monitoring up to 80 points with a single unit. It covers extensive monitoring areas and incorporates thorough redundancy measures (three safeguards) to ensure absolute uptime.

① Dual Pump System (Standard Equipment, Automatic Switchover): The pump is the most heavily loaded and wear-prone component in gas detectors. The FPM-80A includes a spare powerful pump capable of drawing gas from up to 120 meters away.

• Automatic Switchover: If the main pump malfunctions, the backup pump activates instantly. The backup pump can also support suction even if multiple main pumps fail.

• Settings Unchanged: Settings like flow rate are automatically carried over, ensuring detection accuracy remains consistent.

• Replaceable during Operation: Faulty pumps can be replaced while the device remains operational. Unitized design eliminates the need for specialized technical skills.

② Dual Power Supply Units (Optional): For unstable power environments or to prepare for aging deterioration, the power supply can be configured with dual units. In addition to the standard control power supply, the power supply for the thermal decomposer also has a backup system. If one unit fails, it automatically switches to the standby power supply. Furthermore, a failed power supply unit can be replaced while the device remains operational and enables continuous monitoring during maintenance.

③ Data Recording Redundancy (Optional): Data integrity is strictly required under international standards such as ISO 27001. The FPM-80A features two SSDs that synchronously copy data in real time, preventing data loss in the event of a failure. Furthermore, the faulty SSD can be replaced while the device remains operational, enabling safe recovery without any interruption to data recording.

This “non-stop mechanism” is not just a catalog specification. It has passed rigorous field testing repeated at major global semiconductor factories and is installed on mass production lines.
Furthermore, this mechanism significantly contributes to operational “cost reduction.” The greatest benefit is a drastic reduction in emergency maintenance.
With automatic switching to backup units, emergency calls during nights and holidays become unnecessary. Freed from responding to sudden troubles, operations can rely solely on planned maintenance. This reduces the burden on field personnel and helps control labor costs.

Multi-Point Tape-Type Gas Detector [FPM-80A]
Riken Keiki's long-awaited FPM-80A is the flagship model, incorporating the technology of Japan's top-share manufacturer. Equipped with three key components—pump, power supply, and data—it supports continuous operation in semiconductor manufacturing lines.
For managers concerned about “downtime risks” in existing detection systems, we encourage you to review the detailed specifications of the FPM-80A.

For product details, click here.