ASME PTC 19.1-2018, reaffirmed in 2024, provides the foundational framework for calculating and reporting measurement uncertainty in engineering performance tests. It defines procedures to analyze random and systematic errors, ensuring reliable, standardized data for mechanical systems like turbines. The current standard is available through the ASME website. PTC 19.1 - Test Uncertainty - ASME
The American Society of Mechanical Engineers (ASME) produces the Performance Test Codes (PTC). These codes provide strict rules and procedures for conducting tests on machinery and equipment (like turbines, pumps, compressors, and boilers).
Unpredictable variations caused by environmental factors or instrument sensitivity. Uncertainty Propagation: asme ptc 191 pdf
Here’s a relevant, helpful paper related to ASME PTC 19.1 (measurement uncertainty) in PDF form:
Type B Evaluation: Uncertainties estimated through engineering judgment, manufacturer specs, or previous experience. The Calculation Procedure ASME PTC 19
In engineering, no measurement is perfect. Whether you’re measuring the heat rate of a massive gas turbine or the flow in a small pipe, there is always a gap between your reading and the "True Value." National Laboratory of the Rockies (NLR) (.gov) That gap is called Uncertainty ASME PTC 19.1 is the gold standard for managing it. The American Society of Mechanical Engineers - ASME 🛠️ What does it actually do? ASME PTC 19.1-2018 standard provides a rigorous mathematical framework to: Identify Errors : It breaks down errors into Systematic (predictable bias, like a miscalibrated sensor) and (unpredictable variations). Propagate Uncertainty
Officially titled "Test Uncertainty," this standard provides the methodology for: In engineering, no measurement is perfect
The standard you are actually searching for is ASME PTC 19.1 – Test Uncertainty. The typo (swapping "19.1" to "191") is incredibly common among engineers and students new to thermodynamics, fluid mechanics, or power plant performance testing.