How To Structure A Robust Factory Acceptance Test (FAT) For Injection Pen Assembly Lines

A successful Factory Acceptance Test (FAT) is more than just a machine demonstration; it is a critical milestone in pharmaceutical equipment validation. This article outlines DROFEN MACHINERY's rigorous FAT protocol for injection pen assembly lines, detailing the execution of Installation Tests (IT), Operational Tests (OT), and Acceptance Runs to guarantee performance before shipment.

 

For pharmaceutical manufacturers and CDMOs investing in automated injection pen assembly lines, the Factory Acceptance Test (FAT) is the moment of truth. It is the critical transition point where design specifications are proven in reality. However, a superficial FAT-one that merely demonstrates the machine running in a continuous loop-often masks underlying integration and compliance issues that will later surface during Site Acceptance Testing (SAT) or production.

 

At DROFEN MACHINERY, we believe that a robust FAT is the foundation of our project-delivery model. Our FAT protocols are meticulously structured to challenge every aspect of the equipment, ensuring that when the machine arrives at your facility, it is truly ready for GMP validation.

 

Our standard FAT execution sequence for high-speed assembly equipment (such as our 160 pens/min pre-assembly and final assembly lines) is divided into three rigorous phases:

 

1. Installation Tests (IT): The Configuration Baseline Before the machine is even powered on for dynamic testing, we verify the static configuration. This involves a series of targeted checklists:

2. Operational Tests (OT): Challenging the System

This is where the equipment is pushed to its limits. Instead of just watching the machine run smoothly, our OT phase systematically simulates failures and edge cases. We execute over 25 specific operational tests per cell, including:

 

3. The Acceptance Run: Proving Production Capability

Once the IT and OT phases are successfully completed, we conduct a continuous Acceptance Run (typically 1 to 4 hours, depending on the protocol). During this run, the machine processes actual components to verify the guaranteed OEE (Overall Equipment Effectiveness) and yield. We monitor the exact output, reject rates, and machine states, providing a clear, data-driven performance baseline.

 

A thorough FAT will inevitably uncover areas for optimization. How these are handled separates a machine builder from a true project-delivery partner. At DROFEN, any deviation is formally logged in a Discrepancy Report. If an issue cannot be resolved during the FAT, it is transferred to a transparent Project Action List, with all corrective actions mandated to be closed prior to equipment shipment. Furthermore, any hardware or software adjustments made during FAT trigger our Change Control procedure, ensuring all design documents are updated accordingly.

 

By enforcing this level of rigor during the FAT, DROFEN MACHINERY minimizes site integration risks, accelerates your validation timeline, and ensures that your injection pen assembly line delivers process consistency from day one. We don't just build machines; we deliver validated production readiness to make our customers great again.