ASME PTC 19.11, "Steam and Water Sampling, Conditioning, and Analysis in the Power Cycle," mandates methods and hardware for obtaining representative samples of steam and water to prevent corrosion, deposition, and turbine damage in power plants. The standard details requirements for isokinetic sampling nozzles, sample conditioning for pressure and temperature, and online monitoring of chemical parameters like cation conductivity and pH to ensure high-purity water. You can find more information about ASME codes on the American Society of Mechanical Engineers website.
ASME PTC 19.11-2008 (R2018) defines essential standards for steam and water sampling in power cycles, emphasizing representative, isokinetic sampling to protect equipment from corrosion and scaling. It provides mandatory guidelines for sample conditioning and continuous monitoring to ensure accurate chemistry data. The official document is available through the ASME Digital Collection. Asme Ptc 19.11 Pdf
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Use the correct edition (latest is ASME PTC 19.11-2019). Apply it during test planning, not after sampling goes wrong. ASME PTC 19
4. Test Measurement Uncertainty
If your steam purity measurement is wrong, your calculation of enthalpy (heat content) will be wrong. This leads to false reporting of plant efficiency. PTC 19.11 ensures that your thermodynamic performance tests reflect reality. Post Body: Bottom line: Use the correct edition