Coal-fired supercritical power plants have steam generator liquid/vapor separator systems used during transition to/from “drum” mode and “once-through” mode, which undergo flow transients, involving control systems and valve openings, during startup and shutdown. These transients result in fluid acceleration which can produce significant reaction loads on piping systems (20 kips or higher). The evaluation of these loads is used to design piping supports and to assess possible control system and valving modifications. The computation of these transient loadings is challenging because the conditions in steam generator separator systems range from supercritical to subcritical, two phase, cold water or steam conditions occurring over a wide range of pressures and valve operating characteristics. A transient analysis of a typical separator-condensate line is performed using computer codes RELAP5/MOD3.2 and R5FORCE for the hydrodynamic forcetime history. A range of hydraulic loads associated with a range of operating conditions is provided in this paper using different boundary conditions for separator tank pressure, initial temperature of water in pipe lines, and control valve opening/closing times. These sensitivity runs show the benefit of plant control system changes to prevent the control valves opening above 1400 psia, increasing the control valve opening time to over one second, and the effects of keeping the separator-condensate line hot.
Skip Nav Destination
ASME 2012 Pressure Vessels and Piping Conference
July 15–19, 2012
Toronto, Ontario, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5502-7
PROCEEDINGS PAPER
Startup and Shutdown Steam Generator Separator Piping Forces for a Coal-Fired Supercritical Power Plant Available to Purchase
Rajgopal Vijaykumar,
Rajgopal Vijaykumar
Bechtel Power Corporation, Frederick, MD
Search for other works by this author on:
Julie M. Jarvis,
Julie M. Jarvis
Bechtel Power Corporation, Frederick, MD
Search for other works by this author on:
Allen T. Vieira,
Allen T. Vieira
Bechtel Power Corporation, Frederick, MD
Search for other works by this author on:
James Humphrey,
James Humphrey
Bechtel Power Corporation, Frederick, MD
Search for other works by this author on:
Dong Zheng
Dong Zheng
Bechtel Power Corporation, Frederick, MD
Search for other works by this author on:
Rajgopal Vijaykumar
Bechtel Power Corporation, Frederick, MD
Julie M. Jarvis
Bechtel Power Corporation, Frederick, MD
Allen T. Vieira
Bechtel Power Corporation, Frederick, MD
James Humphrey
Bechtel Power Corporation, Frederick, MD
Dong Zheng
Bechtel Power Corporation, Frederick, MD
Paper No:
PVP2012-78798, pp. 701-707; 7 pages
Published Online:
August 8, 2013
Citation
Vijaykumar, R, Jarvis, JM, Vieira, AT, Humphrey, J, & Zheng, D. "Startup and Shutdown Steam Generator Separator Piping Forces for a Coal-Fired Supercritical Power Plant." Proceedings of the ASME 2012 Pressure Vessels and Piping Conference. Volume 3: Design and Analysis. Toronto, Ontario, Canada. July 15–19, 2012. pp. 701-707. ASME. https://doi.org/10.1115/PVP2012-78798
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Quick on the Uptake
Mechanical Engineering (December,2002)
Pressure Transient Analysis in Piping Systems Including the Effects of Plastic Deformation and Cavitation
J. Pressure Vessel Technol (February,1980)
Control of Pipeline Dynamics With Disk Spring Restraints (Design Paper)
J. Pressure Vessel Technol (May,1991)
Related Chapters
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Dynamic Behavior of Pumping Systems
Pipeline Pumping and Compression Systems: A Practical Approach
Piping Design
Power Boilers: A Guide to the Section I of the ASME Boiler and Pressure Vessel Code, Second Edition