Consensus on Operating Practices for the Sampling and by ASME Press

By ASME Press

An ASME examine document ready via the Sampling and tracking job workforce and the Water know-how Subcommittee of the learn and expertise Committee on Water and Steam in Thermal platforms of the yankee Society of Mechanical Engineers.

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Additional resources for Consensus on Operating Practices for the Sampling and Monitoring of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers: An ASME Research Report (Crtd)

Sample text

Test as soon as possible, since air will reduce the concentration. Avoid air contact by filling the container from the bottom, overflowing and then capping. Organic hydrazine substitutes are available. Contact the supplier for applicable testing methods. On-line reductant analyzers are available to determine hydrazine and hydrazine substitute materials concentrations. 22 micron filters. Phosphate interferences with color reaction are removed through oxalic acid addition. e. brines) can affect the color development and can be compensated for through blank and standardization techniques.

Org/about-as D 515 D 5907 Total Dissolved Solids 2540 C. 4500–P Reference No. 05–1x106 mS/cm (Continued) Interferences - Metallic solids can short circuit the electrodes. Oils/hydrocarbons, slime, and suspended solids can adhere and foul the electrodes. This leads to a constantly changing cell constant, which hampers balancing the electrical bridge. Gas bubbles adhering to the electrodes also result in erroneous results. Decreasing conductivity can be due to electrode adsorption of filming amines, surfactants or glycolic-based substances.

This leads to a specific constantly changing cell constant that hampers balancing the electrical bridge. Gas bubbles conductivity adhering to the electrode also result in erroneous results. that utilizes a Other Considerations - Cation column must be conditioned using high purity water (D 1193 hydrogen form Type II specifications) to achieve baseline high purity values. Spent resins will also affect the cation resin results since no ion exchange occurs. Flow rate through the column can affect the results as recolumn to exchange can occur.

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