Preceedings available
The preceedings of the 2nd EPRI/PPChem Conference "Interaction
of Organics and Organic Plant Cycle Chemicals with Water, Steam and
Materials," November 4–6, 2008, Lucerne, Switzerland, are available
from Ladi Bursik
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Dear readers:
In the first April paper, contributed by Markus Theobald and Frank Udo Leidich, the authors introduce a diagnostic method that is very interesting for operators of condensing turbines that are subject to frequent start-ups and shutdowns. This method enables a cause-and-effect analysis of corrosive attacks and can be used for determining whether there is a high probability of corrosion in the exhaust-steam area of a condensing turbine. This paper will surely be read attentively (Cold End Corrosion in Steam Turbines – Diagnosis and Remedies).
In the February and March issues of our journal, Emmanuel K. Quagraine and Jonathan P. Ruffini investigated hitherto unfamiliar sources of chloride contamination of the water/steam circuit (Chloride Contamination of the Water/Steam Cycle in Power Plants – Part I and Part II). This paper continues the series with the final installment, Part III (Computational Analysis and Plant Operational Evidence in Support of Cooling Water Source Gaseous Ingress Hypothesis). Using computational analysis and plant operational data, the authors provide support for the hypothesis that chlorinated compounds with significant vapor pressures may ingress in both gaseous and aqueous forms into the condenser hotwell.
A very different topic is dealt with in the next paper, authored by Victor Marcu, Yosef Shechtman, Sara Moscovich, Eli Gal, and Michael Mengel – water demand and possible sources for wet flue gas desulfurization in a country with scarce water resources. Investigations have revealed that the reject of the second stage of a large seawater reverse osmosis desalination plant (despite its relatively high boron content) can be used in the flue gas desulfurization plant (A Study of Possible Sources of Water for the FGD Project at the Orot Rabin Power Station).
Ruedi Germann reports on the first Power Cycle Instrumentation Seminar, held in Bangkok, Thailand, on March 27–28, 2012. Waesseri GmbH, publisher of the PowerPlant Chemistry® journal, organized this event. It was held under the sponsorship of the PowerPlant Chemistry® journal, and SWAN Analytical Instruments AG provided the necessary financial support. The presentations of the four seminar sessions, Chemical Regimes and the Respective Chemistry-Related Surveillance Requirements, Analytical Methods and Instruments, Cooling Water Sampling and Monitoring, and a Hands-On Session, are summarized (Report on the SWAN/PowerPlant Chemistry Power Cycle Instrumentation Seminar in Bangkok, Thailand).
The last paper shows how chemists (and non-chemists) at utilities and in industrial steam and power generation can find their own answers to questions about topics such as monitoring and control of cycle chemistry and plant cycle treatments by consulting readily available (and free) sources such as the Technical Guidance Documents of the International Association for the Properties of Water and Steam (IAPWS). By studying the most current information about plant cycle chemistry and its monitoring, employees may be able to answer many seemingly complicated questions themselves, without having to seek advice from other individuals or organizations. I have written this paper with the objective of seeing that all power plant chemists have downloaded the IAPWS Technical Guidance Documents onto their computers and use them in their daily routine (Chemistry-Related Instrumentation in Combined Cycles – Helping Operators to Help Themselves).
On May 21–23, 2012, the Third International Conference "Interaction of Organics and Organic Cycle Treatment Chemicals with Water, Steam, and Materials" will take place in Heidelberg, Germany. PowerPlant Chemistry is sponsoring this conference as it did the first two conferences dedicated to the same topic (see page #232 for more details). I'm looking forward to seeing you in Heidelberg!
That's all. Remain true to us and do not forget: the best source of the latest information on power plant chemistry is a subscription to our journal.
Albert Bursik, Editor
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