Consensus on Operating Practices for the Sampling and Monitoring of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers

Consensus on Operating Practices for the Sampling and Monitoring of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers
Author: ASME Press
Publisher:
Total Pages: 0
Release: 2006
Genre: Technology & Engineering
ISBN: 9780791802489

This publication provides recommendations for water chemistry monitoring and is a companion to the ASME "Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers," "A Practical Guide to Avoiding Steam Purity Problems in the Industrial Plant," and "Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration Power Plants." These documents provide guidance for avoiding the penalties of severe corrosion or deposition in steam generation systems and end user equipment.

Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Industrial and Institutional Boilers

Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Industrial and Institutional Boilers
Author:
Publisher: American Society of Mechanical Engineers
Total Pages: 82
Release: 2021-10-29
Genre: Technology & Engineering
ISBN: 9780791885093

The Water Technology Subcommittee of the ASME Research and Technology Committee on Water and Steam in Thermal Systems, under the leadership of Mr. Robert D. Bartholomew has revised the Consensus on Operating Practices for the Control of Feedwater Boiler Water Chemistry in Modern Industrial Boilers, first published in 1979 with prior revisions published in 1994 and 1998.The task group consisted of a cross section of manufacturers, operators, chemical treatment contractors and consultants involved in the fabrication and operation of industrial and institutional boilers. Members of this group are listed in the acknowledgments. This current document is an expansion and revision of the original, with reordered and modified texts where considered necessary. While significant revisions have been incorporated, it is recognized that there are areas of operating practice not addressed herein. Additional information is available from the references. It is the plan of the ASME Research Committee to continue to review this information, and revise and reissue this document as necessary to comply with advances in boiler design and water conditioning technology.

Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers

Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers
Author: ASME Research and Technology Committee on Water and Steam in Thermal Power Systems. Feedwater Quality Task Group
Publisher:
Total Pages: 54
Release: 1994
Genre: Technology & Engineering
ISBN:

This expanded and revised volume presents proper operating practices, which are aimed at minimizing the penalties of severe corrosion or deposition, frequent cleaning requirements, or unscheduled outages in steam generator systems and their auxiliary steam users.

Consensus on Best Tube Sampling Practices for Boilers & Nonnuclear Steam Generators

Consensus on Best Tube Sampling Practices for Boilers & Nonnuclear Steam Generators
Author:
Publisher: American Society of Mechanical Engineers
Total Pages: 0
Release: 2014
Genre: Boilers
ISBN: 9780791860359

The Water Technology Subcommittee of the ASME Research and Technology Committee on Water and Steam in Thermal Systems, has established a Consensus on Best Tube Sampling Practices for Boilers & Nonnuclear Steam Generators. This publication is an important companion to previously published documents prepared to inform and educate the reader and to develop good chemistry control and operating practices for steam and water usage in thermal systems. The earlier publications are Consensus on Operating Practices for the Control of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers; A Practical Guide to Avoiding Steam Purity Problems in the Industrial Plant; Consensus for the Lay-up of Boilers, Turbines, Turbine Condensers, and Auxiliary Equipment, Consensus on Operating Practices for the Sampling and Monitoring of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers, and Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration Power Plants.

Boiler Water Treatment Principles and Practice

Boiler Water Treatment Principles and Practice
Author: Colin Frayne
Publisher: Chemical Publishing Company
Total Pages: 66
Release: 2013
Genre: Technology & Engineering
ISBN: 9780820601731

Table of Contents: About the Author - Saturated steam temperatures at various boiler pressures - Boiler Energy and Power Units - Typical gross heating values of common fuels (based on approximately 80% fuel to steam efficiency) - Typical energy consumption and output ratings for a fire tube boiler - Steam tables suitable for pressure deaerators - Calculating Blowdown - Coefficients of thermal conductivity for some heat-exchanger metals and boiler deposits - Types of water or steam commonly employed in most HW heating and steam generating plants - Commonly occurring minerals in natural MU water sources - Specific waterside / steamside problems affecting MPHW and HPHW boiler plants - Salt concentration indicators - Summary of waterside / steamside problems affecting LPHW and LP steam heating boiler plants - FW contamination from MU water - FW contamination from returned condensate - Problems associated with the final FW blend - Deposition of boiler section waterside surfaces by alkaline earth metal salts, other inorganic salts and organics - Silica and silicate crystalline scales and deposits affecting boiler section waterside surfaces - Iron oxide and other boiler section corrosion debris deposits - Boiler section corrosion problems involving oxygen, concentration cells and low pH - Stress and high temperature related corrosion - Steam purity, quality and other operational problems - Specification for grades of high-quality water suitable for higher pressure WT boilers - Practical considerations for a RW ion-exchange softener - Types of Internal Treatment Program - Carbonate Cycle Requirement Calculations - Phosphate-Cycle Requirement Calculations - A Guide to Tannin Residuals in BW - Carbonate-Cycle Program. BW Carbonate Reserve Requirements by Pressure and Sulfate Concentration - Carbonate-Cycle Coagulation and Precipitation Program. Recommended BW Control Limits for Non-Highly-Rated FT Boilers Employing Hard or Partially Softened FW - Phosphate-Cycle Coagulation and Precipitation Program. Recommended BW Control Limits for Non-Highly-Rated FT Boilers Employing Hard, Partially Softened, or Fully Softened FW - Phosphate-Cycle Coagulation and Precipitation Program. Recommended BW Control Limits for Non-Highly-Rated WT Boilers Employing Hard, Partially Softened, or Fully Softened FW - Chelant demand (ppm product) per 1ppm substrate EDTA Chelant or All-Polymer/All-Organic Program. Recommended BW Control Limits for Fired WT Boilers Employing Demineralized or Similar Quality FW - Oxygen Solubility at Atmospheric Pressure - Properties of Oxygen Scavengers - Carbon Dioxide Evolution from FW Alkalinity - Amine Requirement to Reach a Stable Condensate pH - Amine Basicity Dissociation Constants - Neutralizing Amine Summary Notes - Some DR values for CO2, NH3 and neutralizing amines at various pressures - Calculating Alkalinity Feed-Rate Requirements - [ASME Consensus table 1: Suggested water chemistry limits. Industrial watertube, high duty, primary fuel fired, drum typeMakeup water percentage: Up to 100% of feedwater. Conditions: Includes superheater, turbine drives or process restriction on steam purity] - [ASME Consensus table 2: Suggested chemistry limits. Industrial watertube, high duty, primary fuel fired, drum type] - [ASME Consensus table 3: Suggested chemistry limits. Industrial firetube, high duty, primary fuel fired] - [ASME Consensus table 4: Suggested water chemistry limits. Industrial coil type, watertube, high duty, primary fuel fired rapid steam generators] - [ASME Consensus table 5: Suggested water chemistry limits. Marine propulsion, watertube, oil fired drum type] - [ASME Consensus table 6: Suggested water chemistry limits. Electrode, high voltage, forced circulation jet type] - Notes