The fan filter unit (FFU) is the heart of the cleanroom, and the FFU lifecycle is the input to the in-operation particle count. A cleanroom can be designed with the right pressure cascade, the right air change rate, and the…
Particle counter sampling locations are the most under-specified element of an environmental monitoring program, and the wrong location is the most common reason an audit finds a cleanroom that meets the in-operation class but fails the audit. The in-operation class…
Material transfer is the boundary that defines the cleanroom. Air showers, gowning rooms, and pass boxes are the three elements that control what crosses the boundary, and the wrong design is the most common reason a cleanroom fails the in-operation…
Cleanroom consumables are the part of the contamination control program that operators touch every day, and the program fails when the consumables are wrong. The wrong wipe sheds particles into the cleanroom. The wrong swab leaves residue on the tool.…
Predictive maintenance for cleanroom particle excursions is the difference between a program that responds to events and a program that anticipates them. The data is already being collected. The analysis is what turns the data into a maintenance schedule, and…
Risk-based environmental monitoring is the difference between a monitoring program that produces actionable data and a monitoring program that produces noise. The principle is straightforward: not every location in a cleanroom has the same risk to product quality, and the…
Closing: The Risk Assessment Is the Glue The mental shift that makes the risk-based approach work is to stop treating the monitoring program as a list of sample locations and start treating it as a risk-graded decision. The risk assessment…
Closing: The Risk Assessment Is the Glue The mental shift that makes the risk-based approach work is to stop treating the monitoring program as a list of sample locations and start treating it as a risk-graded decision. The risk assessment…
Closing: The Risk Assessment Is the Glue The mental shift that makes the risk-based approach work is to stop treating the monitoring program as a list of sample locations and start treating it as a risk-graded decision. The risk assessment…
A working semiconductor data integrity program has the same four elements (instrument validation, trend plot, excursion record, retention) as a pharmaceutical program, with the retention period shortened to the customer-specific requirement (typically 3 to 5 years) and the audit trail…