The phrase "a rigorous system of" is correct and usable in written English.
It can be used when describing a structured and strict approach to a particular process or methodology.
Example: "The research project was built upon a rigorous system of data collection and analysis to ensure accuracy and reliability."
Alternatives: "a strict framework of" or "a comprehensive method of".
Industry executives credit a rigorous system of encouraging technicians to report every anomaly.
Professor Blakemore said the leaked list revealed that the system "isn't a rigorous system of assessment of merit".
With a comprehensive base and a rigorous system of enforcement, the Warren tax may well meet that standard.
Our highest priority at the Food Safety and Inspection Service is protecting public health through a rigorous system of meat and poultry inspection.
Properly supported, with a rigorous system of evaluation and accountability, we have the potential to grow the value of our economic, social and cultural contribution exponentially.
Yet they're built on a rigorous system of real-world information, ranging from theoretical physics and molecular biology to medieval alchemy and classical philosophy.
To improve the quality of schools, districts need a rigorous system for evaluating the quality of teaching — rewarding teachers who do their jobs best and retraining or removing those who fail their students.
The development of a rigorous system for graduate programme evaluation was a crucial factor in achieving a leading position by Brazilian institutions.
After forest clearance peaked in 2004, the environment minister Marina da Silva, another child of a rubber tapping family and former colleague of Mendes, put in place a more rigorous system of monitoring, penalties and incentives that has resulted in an 80% slowdown in the rate of deforestation.
Jason Kamras, a chief architect of the D.C. system, urged Los Angeles to "stick to your guns" in crafting a rigorous system in the face of political pressure.
A more rigorous system of assessing the riskiness of loans is being foisted upon them.
