Interim consensus guidelines on fossil plant cycle chemistry. Final report

Technical Report · Sun Jun 01 04:00:00 EDT 1986

OSTI ID:5709254

Aschoff, A F; Lee, Y H; Sopocy, D M; Jonas, O

US utilities have been faced with a multitude of water and steam control limits disseminated by various groups and manufacturers. These have provided disparate goals for plant personnel and management in determining the operating limits for their plants. EPRI authorized the preparation of guidelines on fossil plant cycle chemistry as part of a research program, RP2712, with the goal to reduce forced outages and efficiency losses related to water chemistry, corrosion, and deposition. This report is a unified, specific, and comprehensive document that provides the guidance needed for effective and economical control of corrosion and deposition. Implementation of these Guidelines will help reduce forced outages caused by corrosion-induced failures and thereby increase unit availability. The Guidelines provide a set of target values and action levels for critical sample points throughout the water and steam cycle for drum boilers with phosphate treatment; for drum boilers with all-volatile treatment; and for once-through boilers. They are applicable to baseload and to cycling and peaking operation. Corrective actions to be taken when the Guidelines are exceeded are also discussed. More general guidelines are given on management responsibilities, layup, representative sampling, analytical methods, continuous instrumentation, data collection and management, and other considerations. The Guidelines and the results of the other phases of the EPRI Research Project 2712 should bring significant benefits to US utilities at a moderate cost. Modification of portions of the Guidelines to reflect actual, plant-specific design characteristics and local operating experience is recommended when appropriately justified. 118 refs., 88 figs., 24 tabs.

• Research Organization: Sargent and Lundy, Chicago, IL (USA)
• OSTI ID: 5709254
• Report Number(s): EPRI-CS-4629; ON: TI86920324
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200101* -- Fossil-Fueled Power Plants-- Cooling & Heat Transfer Equipment & Systems
BOILERS
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
DEMINERALIZATION
DEPOSITS
ENERGY SYSTEMS
FEEDWATER
FOSSIL-FUEL POWER PLANTS
HYDROGEN COMPOUNDS
MACHINERY
MAINTENANCE
OPERATION
OUTAGES
OXYGEN COMPOUNDS
POWER PLANTS
RECOMMENDATIONS
SCALING
SEPARATION PROCESSES
STEAM SYSTEMS
STEAM TURBINES
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY
WATER
WATER CHEMISTRY
WATER TREATMENT